SHAREOWNERS' EQUITY - Additional Information (Detail) $ / shares in Units, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020 USD ($) Classes_of_Common_Stock Vote $ / shares shares	Sep. 30, 2019 USD ($) shares	Sep. 30, 2020 USD ($) Classes_of_Common_Stock Vote $ / shares shares	Sep. 30, 2019 USD ($) shares	May 31, 2016 USD ($)
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			$ 224	$ 751
Common stock authorized for purchase, amount					$ 8,000
Stock Repurchase Program, Remaining Authorized Repurchase Amount	$ 2,100		2,100
Change in non-controlling minority interest	1	$ (2)	(2)	0
Accelerated Share Repurchases, Settlement (Payment) or Receipt	$ 0		$ 0
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	$ 217	$ 753
Common stock purchases | shares	0	2,200,000	2,100,000	7,000,000.0
Options Held [Member]
Stockholders Equity Note [Line Items]
Option premiums received		$ 20		$ 21
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number | shares	0		0
Net Income [Member] [Member]
Stockholders Equity Note [Line Items]
TotalOtherComprehensiveIncomeReclassification, Net of Tax	$ (15)	7	$ (2)	(39)
Unrealized gain (loss) on cash flow hedges, net of tax:
Stockholders Equity Note [Line Items]
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Tax	(8)	(14)	(39)	(27)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Net of Tax	27	45	125	85
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	(8)	(14)	(39)	(27)
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	27	45	125	85
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	13	14	40	41
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)	(43)	(130)	(129)
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] | Investment Income and Other
Stockholders Equity Note [Line Items]
Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), Reclassification Adjustment from AOCI, before Tax	(56)	(57)	(170)	(170)
Accumulated Net Investment Gain (Loss) Attributable to Parent [Member]
Stockholders Equity Note [Line Items]
Reclassification to earnings, tax effect	0	(1)	(1)	(1)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax	1	5	3	5
Accumulated Net Investment Gain (Loss) Attributable to Parent [Member] | Income Tax Expense Benefit [Member]
Stockholders Equity Note [Line Items]
Reclassification to earnings, tax effect	0	(1)	(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	1	5	3	5
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	1	6	4	6
Foreign Exchange Contracts | Unrealized gain (loss) on cash flow hedges, net of tax: | Revenue
Stockholders Equity Note [Line Items]
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, before Tax	38	62	173	124
Interest Contracts | 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)	$ (3)	$ (9)	$ (12)