Quarterly report pursuant to Section 13 or 15(d)

SHAREOWNERS' EQUITY - Additional Information (Detail)

v3.19.3
SHAREOWNERS' EQUITY - Additional Information (Detail)
$ / shares in Units, $ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2019
USD ($)
Vote
Classes_of_Common_Stock
$ / shares
shares
Sep. 30, 2018
USD ($)
shares
Sep. 30, 2019
USD ($)
Vote
Classes_of_Common_Stock
$ / shares
shares
Sep. 30, 2018
USD ($)
shares
Dec. 31, 2018
USD ($)
Dec. 31, 2017
USD ($)
May 01, 2016
USD ($)
Stockholders Equity Note [Line Items]              
Classes of Common Stock, Number | Classes_of_Common_Stock 2   2        
Preferred stock, shares authorized | shares 200,000,000   200,000,000        
Preferred stock, par value | $ / shares $ 0.01   $ 0.01        
Preferred stock, issued | shares 0   0        
Payments for Repurchase of Common Stock     $ 751 $ 770      
Common stock authorized for purchase, amount             $ 8,000
Stock Repurchase Program, Remaining Authorized Repurchase Amount $ 2,586   2,586        
Change in non-controlling minority interest $ (2) $ 0 $ 0 (2)      
Class A common stock              
Stockholders Equity Note [Line Items]              
Votes per common share | Vote 10   10        
Common stock, par value | $ / shares $ 0.01   $ 0.01        
Common stock, shares authorized | shares 4,600,000,000   4,600,000,000        
Class B common stock              
Stockholders Equity Note [Line Items]              
Votes per common share | Vote 1   1        
Common stock, par value | $ / shares $ 0.01   $ 0.01        
Common stock, shares authorized | shares 5,600,000,000   5,600,000,000        
Class A and B Common Stock              
Stockholders Equity Note [Line Items]              
Total of Class A and Class B common stock, repurchased, value $ 251 $ 245 $ 753 $ 756      
Common stock purchases | shares 2,200,000 2,200,000 7,000,000.0 6,600,000      
Options Held [Member]              
Stockholders Equity Note [Line Items]              
Option premiums received $ 20 $ 32 $ 21 $ 13      
Net Income [Member] [Member]              
Stockholders Equity Note [Line Items]              
TotalOtherComprehensiveIncomeReclassification, Net of Tax 7 (44) (39) (178)      
Unrealized gain (loss) on cash flow hedges, net of tax:              
Stockholders Equity Note [Line Items]              
Reclassification from AOCI pursuant to the early adoption of ASU 2018-02         $ 0 $ (79)  
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Tax (14) 1 27 19      
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Net of Tax (45) 5 85 (61)      
Unrealized gain (loss) on cash flow hedges, net of tax: | Income Tax Expense Benefit [Member]              
Stockholders Equity Note [Line Items]              
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Tax (14) 1 (27) 19      
Unrealized gain (loss) on cash flow hedges, net of tax: | Net Income [Member] [Member]              
Stockholders Equity Note [Line Items]              
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Net of Tax 45 (5) 85 (61)      
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]              
Stockholders Equity Note [Line Items]              
Reclassification to earnings (net of tax effect of $_ and $12)     0 (609)      
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] | Income Tax Expense Benefit [Member]              
Stockholders Equity Note [Line Items]              
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, Tax 14 12 41 36      
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] | Net Income [Member] [Member]              
Stockholders Equity Note [Line Items]              
Reclassification to earnings (net of tax effect of $_ and $12) (43) (38) (129) (115)      
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] | Labor and Related Expense [Member]              
Stockholders Equity Note [Line Items]              
Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), Reclassification Adjustment from AOCI, before Tax (57) (50) (170) (151)      
Accumulated Net Investment Gain (Loss) Attributable to Parent [Member]              
Stockholders Equity Note [Line Items]              
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax 1 0 1 1      
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax (5) 1 5 (2)      
Accumulated Net Investment Gain (Loss) Attributable to Parent [Member] | Income Tax Expense Benefit [Member]              
Stockholders Equity Note [Line Items]              
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax (1) 0 (1) 1      
Accumulated Net Investment Gain (Loss) Attributable to Parent [Member] | Net Income [Member] [Member]              
Stockholders Equity Note [Line Items]              
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax 5 (1) 5 (2)      
Accumulated Net Investment Gain (Loss) Attributable to Parent [Member] | Investment income and other              
Stockholders Equity Note [Line Items]              
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, before Tax 6 (1) 6 (3)      
Foreign Exchange Contract [Member] | Unrealized gain (loss) on cash flow hedges, net of tax: | Interest Expense              
Stockholders Equity Note [Line Items]              
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, before Tax 62 0 124 (62)      
Interest Rate Contract [Member] | Unrealized gain (loss) on cash flow hedges, net of tax: | Interest Expense              
Stockholders Equity Note [Line Items]              
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, before Tax $ (3) $ (6) $ (12) $ (18)