Quarterly report pursuant to Section 13 or 15(d)

Carrying Value of Outstanding Debt (Detail)

v3.5.0.2
Carrying Value of Outstanding Debt (Detail) - USD ($)
$ in Millions
6 Months Ended
Jun. 30, 2016
Dec. 31, 2015
Debt Instrument [Line Items]    
Debt Instrument, Face Amount $ 14,100  
Total Debt 14,366 $ 14,334
Less current maturities (2,816) (3,018)
Long-Term Debt 11,550 11,316
Commercial Paper    
Debt Instrument [Line Items]    
Debt Instrument, Face Amount $ 2,751  
Maturity - Minimum Date Dec. 31, 2016  
Maturity - Maximum Date Dec. 31, 2016  
Total Debt $ 2,749 2,965
Senior notes | 5.50% stated rate    
Debt Instrument [Line Items]    
Debt Instrument, Face Amount $ 750  
Maturity - Maximum Date Jan. 15, 2018  
Debt instrument, stated interest rate 5.50%  
Total Debt $ 784 787
Senior notes | 5.125% stated rate    
Debt Instrument [Line Items]    
Debt Instrument, Face Amount $ 1,000  
Maturity - Maximum Date Apr. 15, 2019  
Debt instrument, stated interest rate 5.125%  
Total Debt $ 1,073 1,064
Senior notes | Debentures 8 Point 375 Percent Due 2030    
Debt Instrument [Line Items]    
Debt Instrument, Face Amount 276  
Total Debt 282 282
Senior notes | 3.125% stated rate    
Debt Instrument [Line Items]    
Debt Instrument, Face Amount $ 1,500  
Maturity - Maximum Date Jan. 15, 2021  
Debt instrument, stated interest rate 3.125%  
Total Debt $ 1,656 1,613
Senior notes | 6.20% stated rate    
Debt Instrument [Line Items]    
Debt Instrument, Face Amount $ 1,500  
Maturity - Maximum Date Jan. 15, 2038  
Debt instrument, stated interest rate 6.20%  
Total Debt $ 1,481 1,481
Senior notes | 4.875% stated rate    
Debt Instrument [Line Items]    
Debt Instrument, Face Amount $ 500  
Maturity - Maximum Date Nov. 15, 2040  
Debt instrument, stated interest rate 4.875%  
Total Debt $ 489 489
Senior notes | A1125SeniorNotes    
Debt Instrument [Line Items]    
Debt Instrument, Face Amount $ 375  
Maturity - Maximum Date Oct. 01, 2017  
Debt instrument, stated interest rate 1.125%  
Total Debt $ 375 372
Senior notes | 2.45% senior notes    
Debt Instrument [Line Items]    
Debt Instrument, Face Amount $ 1,000  
Maturity - Maximum Date Oct. 01, 2022  
Debt instrument, stated interest rate 2.45%  
Total Debt $ 1,042 991
Senior notes | 3.625% senior notes    
Debt Instrument [Line Items]    
Debt Instrument, Face Amount $ 375  
Maturity - Maximum Date Oct. 01, 2042  
Debt instrument, stated interest rate 3.625%  
Total Debt $ 367 367
Senior notes | Debentures 8 Point 375 Percent Due 2020    
Debt Instrument [Line Items]    
Debt Instrument, Face Amount 424  
Total Debt 480 474
Senior notes | Floating rate senior notes    
Debt Instrument [Line Items]    
Debt Instrument, Face Amount $ 798  
Maturity - Minimum Date Jan. 01, 2049  
Maturity - Maximum Date Jan. 01, 2066  
Total Debt $ 790 600
Debentures [Member] | 8.375% debentures due 2030    
Debt Instrument [Line Items]    
Maturity - Maximum Date Jan. 01, 2030  
Debt instrument, stated interest rate 8.375%  
Debentures [Member] | 8.375% debentures due 2020    
Debt Instrument [Line Items]    
Maturity - Minimum Date Jan. 01, 2020  
Debt instrument, stated interest rate 8.375%  
Capital Lease Obligations    
Debt Instrument [Line Items]    
Debt Instrument, Face Amount $ 466  
Maturity - Minimum Date Dec. 31, 2016  
Maturity - Maximum Date Jan. 01, 3005  
Total Debt $ 466 475
Pound Sterling notes | Pound Sterling Notes 5 Point 5 Percent    
Debt Instrument [Line Items]    
Debt Instrument, Face Amount $ 89  
Maturity - Maximum Date Jan. 01, 2031  
Debt instrument, stated interest rate 5.50%  
Total Debt $ 82 92
Pound Sterling notes | Pound Sterling Notes 5 Point 13 Percent    
Debt Instrument [Line Items]    
Debt Instrument, Face Amount 611  
Total Debt $ 574 638
Pound Sterling notes | Pound Sterling Notes 5 Point 125 Percent    
Debt Instrument [Line Items]    
Maturity - Maximum Date Jan. 01, 2050  
Debt instrument, stated interest rate 5.125%  
Euro Senior Notes | 1.625% Euro Senior Notes    
Debt Instrument [Line Items]    
Debt Instrument, Face Amount $ 778  
Long-term Debt $ 771 759
Maturity - Maximum Date Nov. 15, 2025  
Debt instrument, stated interest rate 0.00%  
Euro Senior Notes | Floating Rate Euro Senior Notes    
Debt Instrument [Line Items]    
Debt Instrument, Face Amount $ 555  
Long-term Debt $ 553 544
Maturity - Maximum Date Jul. 15, 2020  
Facility notes and bonds    
Debt Instrument [Line Items]    
Debt Instrument, Face Amount $ 320  
Maturity - Minimum Date Jan. 01, 2016  
Maturity - Maximum Date Jan. 01, 2045  
Total Debt $ 319 319
Other debt    
Debt Instrument [Line Items]    
Debt Instrument, Face Amount $ 32  
Maturity - Minimum Date Jan. 01, 2016  
Maturity - Maximum Date Jan. 01, 2022  
Total Debt $ 33 $ 22