Annual report pursuant to Section 13 and 15(d)

COMPANY-SPONSORED EMPLOYEE BENEFIT PLANS - Fair Values of U.S. Pension and Postretirement Benefit Plan Assets by Asset Category as Well as the Percentage That Each Category Comprises of Total Plan Assets and the Respective Target Allocations (Detail)

v3.8.0.1
COMPANY-SPONSORED EMPLOYEE BENEFIT PLANS - Fair Values of U.S. Pension and Postretirement Benefit Plan Assets by Asset Category as Well as the Percentage That Each Category Comprises of Total Plan Assets and the Respective Target Allocations (Detail) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets $ 8 $ 0  
Plan assets target allocation 100.00% 100.00%  
Fair Value, Inputs, Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets $ 43,448 $ 32,322  
Fair Value, Inputs, Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 23,664 15,030  
Fair Value, Inputs, Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 12,926 11,043  
Fair Value, Inputs, Level 3 | Corporate Bonds      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 8 0 $ 6
Fair Value, Inputs, Level 3 | Hedge Funds      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0 0 49
Fair Value, Inputs, Level 3 | Structured Products      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 8 0 $ 55
Domestic      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets $ 8 $ 0  
Percentage of Plan Assets 100.00% 100.00%  
Domestic | Cash and Cash Equivalents      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets $ 0 $ 0  
Percentage of Plan Assets 13.60% 1.00%  
Domestic | Fair Value, Inputs, Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets $ 42,115 $ 31,230  
Domestic | Fair Value, Inputs, Level 1 | Cash and Cash Equivalents      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 5,725 304  
Domestic | Fair Value, Inputs, Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 23,333 14,753  
Domestic | Fair Value, Inputs, Level 2 | Cash and Cash Equivalents      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 5,292 102  
Domestic | Fair Value, Inputs, Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 11,978 10,270  
Domestic | Fair Value, Inputs, Level 3 | Cash and Cash Equivalents      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets $ 433 $ 202  
Domestic | Minimum | Cash and Cash Equivalents      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets target allocation, Maximum 0.00% 0.00%  
Domestic | Maximum | Cash and Cash Equivalents      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets target allocation, Maximum 5.00% 5.00%  
Domestic | Equity securities      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets $ 0 $ 0  
Percentage of Plan Assets 38.50% 39.90%  
Domestic | Equity securities | U.S. Large Cap      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets $ 0 $ 0  
Domestic | Equity securities | U.S. Small Cap      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0 0  
Domestic | Equity securities | Emerging Markets      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0 0  
Domestic | Equity securities | Global Equity      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0 0  
Domestic | Equity securities | International Equity      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0 0  
Domestic | Equity securities | Fair Value, Inputs, Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 16,224 12,450  
Domestic | Equity securities | Fair Value, Inputs, Level 1 | U.S. Large Cap      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 5,924 4,883  
Domestic | Equity securities | Fair Value, Inputs, Level 1 | U.S. Small Cap      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 591 542  
Domestic | Equity securities | Fair Value, Inputs, Level 1 | Emerging Markets      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 2,101 1,396  
Domestic | Equity securities | Fair Value, Inputs, Level 1 | Global Equity      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 2,817 2,603  
Domestic | Equity securities | Fair Value, Inputs, Level 1 | International Equity      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 4,791 3,026  
Domestic | Equity securities | Fair Value, Inputs, Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 10,561 8,708  
Domestic | Equity securities | Fair Value, Inputs, Level 2 | U.S. Large Cap      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 3,121 2,327  
Domestic | Equity securities | Fair Value, Inputs, Level 2 | U.S. Small Cap      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 421 393  
Domestic | Equity securities | Fair Value, Inputs, Level 2 | Emerging Markets      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 1,669 1,236  
Domestic | Equity securities | Fair Value, Inputs, Level 2 | Global Equity      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 2,400 2,555  
Domestic | Equity securities | Fair Value, Inputs, Level 2 | International Equity      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 2,950 2,197  
Domestic | Equity securities | Fair Value, Inputs, Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 5,663 3,742  
Domestic | Equity securities | Fair Value, Inputs, Level 3 | U.S. Large Cap      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 2,803 2,556  
Domestic | Equity securities | Fair Value, Inputs, Level 3 | U.S. Small Cap      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 170 149  
Domestic | Equity securities | Fair Value, Inputs, Level 3 | Emerging Markets      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 432 160  
Domestic | Equity securities | Fair Value, Inputs, Level 3 | Global Equity      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 417 48  
Domestic | Equity securities | Fair Value, Inputs, Level 3 | International Equity      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets $ 1,841 $ 829  
Domestic | Equity securities | Minimum      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets target allocation, Maximum 35.00% 25.00%  
Domestic | Equity securities | Maximum      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets target allocation, Maximum 55.00% 55.00%  
Domestic | Fixed Income Securities      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets $ 8 $ 0  
Percentage of Plan Assets 27.60% 34.60%  
Domestic | Fixed Income Securities | Global Equity      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets $ 0 $ 0  
Domestic | Fixed Income Securities | U.S. Government Securities      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0 0  
Domestic | Fixed Income Securities | Corporate Bonds      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 8 0  
Domestic | Fixed Income Securities | Municipal Bonds      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0 0  
Domestic | Fixed Income Securities | Fair Value, Inputs, Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 11,634 10,850  
Domestic | Fixed Income Securities | Fair Value, Inputs, Level 1 | Global Equity      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 53 161  
Domestic | Fixed Income Securities | Fair Value, Inputs, Level 1 | U.S. Government Securities      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 7,695 6,173  
Domestic | Fixed Income Securities | Fair Value, Inputs, Level 1 | Corporate Bonds      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 3,865 4,492  
Domestic | Fixed Income Securities | Fair Value, Inputs, Level 1 | Municipal Bonds      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 21 24  
Domestic | Fixed Income Securities | Fair Value, Inputs, Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 7,323 5,821  
Domestic | Fixed Income Securities | Fair Value, Inputs, Level 2 | Global Equity      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0 0  
Domestic | Fixed Income Securities | Fair Value, Inputs, Level 2 | U.S. Government Securities      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 7,323 5,821  
Domestic | Fixed Income Securities | Fair Value, Inputs, Level 2 | Corporate Bonds      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0 0  
Domestic | Fixed Income Securities | Fair Value, Inputs, Level 2 | Municipal Bonds      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0 0  
Domestic | Fixed Income Securities | Fair Value, Inputs, Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 4,303 4,927  
Domestic | Fixed Income Securities | Fair Value, Inputs, Level 3 | Global Equity      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 53 59  
Domestic | Fixed Income Securities | Fair Value, Inputs, Level 3 | U.S. Government Securities      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 372 352  
Domestic | Fixed Income Securities | Fair Value, Inputs, Level 3 | Corporate Bonds      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 3,857 4,492  
Domestic | Fixed Income Securities | Fair Value, Inputs, Level 3 | Municipal Bonds      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets $ 21 $ 24  
Domestic | Fixed Income Securities | Minimum      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets target allocation, Maximum 25.00% 15.00%  
Domestic | Fixed Income Securities | Maximum      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets target allocation, Maximum 35.00% 35.00%  
Domestic | Other Investments [Member] | Hedge Funds      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets $ 0 $ 0  
Percentage of Plan Assets 6.90% 9.20%  
Domestic | Other Investments [Member] | Private Equity      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets $ 0 $ 0  
Percentage of Plan Assets 5.00% 5.50%  
Domestic | Other Investments [Member] | Private Debt      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets $ 0    
Percentage of Plan Assets 2.30%    
Domestic | Other Investments [Member] | Structured Products      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets $ 0 $ 0  
Percentage of Plan Assets 4.80% 5.60%  
Domestic | Other Investments [Member] | Risk Parity Funds [Domain]      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets $ 0  
Percentage of Plan Assets 0.90% 1.00%  
Domestic | Other Investments [Member] | Asset-backed Securities [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets   $ 0  
Percentage of Plan Assets   1.60%  
Domestic | Other Investments [Member] | Structured Products [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets $ 0    
Percentage of Plan Assets 0.40%    
Domestic | Other Investments [Member] | Fair Value, Inputs, Level 1 | Hedge Funds      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets $ 2,910 $ 2,867  
Domestic | Other Investments [Member] | Fair Value, Inputs, Level 1 | Private Equity      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 2,107 1,716  
Domestic | Other Investments [Member] | Fair Value, Inputs, Level 1 | Private Debt      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 953    
Domestic | Other Investments [Member] | Fair Value, Inputs, Level 1 | Structured Products      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 2,031 1,734  
Domestic | Other Investments [Member] | Fair Value, Inputs, Level 1 | Risk Parity Funds [Domain]      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 359 321  
Domestic | Other Investments [Member] | Fair Value, Inputs, Level 1 | Asset-backed Securities [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets   492  
Domestic | Other Investments [Member] | Fair Value, Inputs, Level 1 | Structured Products [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 172    
Domestic | Other Investments [Member] | Fair Value, Inputs, Level 2 | Hedge Funds      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0 0  
Domestic | Other Investments [Member] | Fair Value, Inputs, Level 2 | Private Equity      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0 0  
Domestic | Other Investments [Member] | Fair Value, Inputs, Level 2 | Private Debt      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0    
Domestic | Other Investments [Member] | Fair Value, Inputs, Level 2 | Structured Products      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 157 122  
Domestic | Other Investments [Member] | Fair Value, Inputs, Level 2 | Risk Parity Funds [Domain]      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0 0  
Domestic | Other Investments [Member] | Fair Value, Inputs, Level 2 | Asset-backed Securities [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets   0  
Domestic | Other Investments [Member] | Fair Value, Inputs, Level 2 | Structured Products [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0    
Domestic | Other Investments [Member] | Fair Value, Inputs, Level 3 | Hedge Funds      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 1,031 763  
Domestic | Other Investments [Member] | Fair Value, Inputs, Level 3 | Private Equity      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0 0  
Domestic | Other Investments [Member] | Fair Value, Inputs, Level 3 | Private Debt      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 237    
Domestic | Other Investments [Member] | Fair Value, Inputs, Level 3 | Structured Products      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 139 144  
Domestic | Other Investments [Member] | Fair Value, Inputs, Level 3 | Risk Parity Funds [Domain]      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0 0  
Domestic | Other Investments [Member] | Fair Value, Inputs, Level 3 | Asset-backed Securities [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets   $ 492  
Domestic | Other Investments [Member] | Fair Value, Inputs, Level 3 | Structured Products [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets $ 172    
Domestic | Other Investments [Member] | Minimum | Hedge Funds      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets target allocation, Maximum 5.00% 8.00%  
Domestic | Other Investments [Member] | Minimum | Private Equity      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets target allocation, Maximum 1.00% 3.00%  
Domestic | Other Investments [Member] | Minimum | Structured Products      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets target allocation, Maximum 1.00% 3.00%  
Domestic | Other Investments [Member] | Minimum | Other      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets target allocation, Maximum 1.00% 1.00%  
Domestic | Other Investments [Member] | Minimum | Structured Products [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets target allocation, Maximum 0.00% 0.00%  
Domestic | Other Investments [Member] | Maximum | Hedge Funds      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets target allocation, Maximum 15.00% 15.00%  
Domestic | Other Investments [Member] | Maximum | Private Equity      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets target allocation, Maximum 10.00% 10.00%  
Domestic | Other Investments [Member] | Maximum | Structured Products      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets target allocation, Maximum 10.00% 10.00%  
Domestic | Other Investments [Member] | Maximum | Other      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets target allocation, Maximum 10.00% 10.00%  
Domestic | Other Investments [Member] | Maximum | Structured Products [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets target allocation, Maximum 5.00% 5.00%  
International [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets $ 0 $ 0  
Percentage of Plan Assets 100.00% 100.00%  
International [Member] | Cash and Cash Equivalents      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets $ 0  
Percentage of Plan Assets 5.80% 4.90%  
International [Member] | Fair Value, Inputs, Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets $ 1,333 $ 1,092  
International [Member] | Fair Value, Inputs, Level 1 | Cash and Cash Equivalents      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 78 54  
International [Member] | Fair Value, Inputs, Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 331 277  
International [Member] | Fair Value, Inputs, Level 2 | Cash and Cash Equivalents      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 43 37  
International [Member] | Fair Value, Inputs, Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 948 773  
International [Member] | Fair Value, Inputs, Level 3 | Cash and Cash Equivalents      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets $ 35 $ 17  
International [Member] | Minimum | Cash and Cash Equivalents      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets target allocation, Maximum 0.00% 0.00%  
International [Member] | Maximum | Cash and Cash Equivalents      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets target allocation, Maximum 5.00% 5.00%  
International [Member] | Equity securities      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets $ 0 $ 0  
Percentage of Plan Assets 47.70% 47.70%  
International [Member] | Equity securities | Emerging Markets      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets $ 0  
International [Member] | Equity securities | International Equity      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0  
International [Member] | Equity securities | local market equity [Domain]      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0  
International [Member] | Equity securities | U.S. Equity [Domain]      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0  
International [Member] | Equity securities | Fair Value, Inputs, Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 637 522  
International [Member] | Equity securities | Fair Value, Inputs, Level 1 | Emerging Markets      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 38 26  
International [Member] | Equity securities | Fair Value, Inputs, Level 1 | International Equity      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 356 288  
International [Member] | Equity securities | Fair Value, Inputs, Level 1 | local market equity [Domain]      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 213 188  
International [Member] | Equity securities | Fair Value, Inputs, Level 1 | U.S. Equity [Domain]      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 30 20  
International [Member] | Equity securities | Fair Value, Inputs, Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 204 167  
International [Member] | Equity securities | Fair Value, Inputs, Level 2 | Emerging Markets      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 38 26  
International [Member] | Equity securities | Fair Value, Inputs, Level 2 | International Equity      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 166 141  
International [Member] | Equity securities | Fair Value, Inputs, Level 2 | local market equity [Domain]      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0 0  
International [Member] | Equity securities | Fair Value, Inputs, Level 2 | U.S. Equity [Domain]      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0 0  
International [Member] | Equity securities | Fair Value, Inputs, Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 433 355  
International [Member] | Equity securities | Fair Value, Inputs, Level 3 | Emerging Markets      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0 0  
International [Member] | Equity securities | Fair Value, Inputs, Level 3 | International Equity      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 190 147  
International [Member] | Equity securities | Fair Value, Inputs, Level 3 | local market equity [Domain]      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 213 188  
International [Member] | Equity securities | Fair Value, Inputs, Level 3 | U.S. Equity [Domain]      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets $ 30 $ 20  
International [Member] | Equity securities | Minimum      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets target allocation, Maximum 50.00% 50.00%  
International [Member] | Equity securities | Maximum      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets target allocation, Maximum 65.00% 65.00%  
International [Member] | Fixed Income Securities      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets $ 0 $ 0  
Percentage of Plan Assets 22.60% 22.20%  
International [Member] | Fixed Income Securities | Corporate Bonds      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets $ 0  
International [Member] | Fixed Income Securities | Foreign Government Debt [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0  
International [Member] | Fixed Income Securities | Fair Value, Inputs, Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 301 242  
International [Member] | Fixed Income Securities | Fair Value, Inputs, Level 1 | Corporate Bonds      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 198 158  
International [Member] | Fixed Income Securities | Fair Value, Inputs, Level 1 | Foreign Government Debt [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 103 84  
International [Member] | Fixed Income Securities | Fair Value, Inputs, Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 84 73  
International [Member] | Fixed Income Securities | Fair Value, Inputs, Level 2 | Corporate Bonds      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 59 51  
International [Member] | Fixed Income Securities | Fair Value, Inputs, Level 2 | Foreign Government Debt [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 25 22  
International [Member] | Fixed Income Securities | Fair Value, Inputs, Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 217 169  
International [Member] | Fixed Income Securities | Fair Value, Inputs, Level 3 | Corporate Bonds      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 139 107  
International [Member] | Fixed Income Securities | Fair Value, Inputs, Level 3 | Foreign Government Debt [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets $ 78 $ 62  
International [Member] | Fixed Income Securities | Minimum      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets target allocation, Maximum 15.00% 15.00%  
International [Member] | Fixed Income Securities | Maximum      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets target allocation, Maximum 35.00% 35.00%  
International [Member] | Other Investments [Member] | Structured Products      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets $ 0  
Percentage of Plan Assets 9.30% 8.50%  
International [Member] | Other Investments [Member] | Other      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets $ 0  
Percentage of Plan Assets 14.60% 16.70%  
International [Member] | Other Investments [Member] | Fair Value, Inputs, Level 1 | Structured Products      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets $ 124 $ 93  
International [Member] | Other Investments [Member] | Fair Value, Inputs, Level 1 | Other      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 193 181  
International [Member] | Other Investments [Member] | Fair Value, Inputs, Level 2 | Structured Products      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0 0  
International [Member] | Other Investments [Member] | Fair Value, Inputs, Level 2 | Other      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0 0  
International [Member] | Other Investments [Member] | Fair Value, Inputs, Level 3 | Structured Products      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 79 57  
International [Member] | Other Investments [Member] | Fair Value, Inputs, Level 3 | Other      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets $ 184 $ 175  
International [Member] | Other Investments [Member] | Minimum | Structured Products      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets target allocation, Maximum 0.00% 0.00%  
International [Member] | Other Investments [Member] | Minimum | Structured Products [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets target allocation, Maximum 0.00% 0.00%  
International [Member] | Other Investments [Member] | Maximum | Structured Products      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets target allocation, Maximum 17.00% 17.00%  
International [Member] | Other Investments [Member] | Maximum | Structured Products [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets target allocation, Maximum 10.00% 10.00%