Consolidated Statement of Stockholders' Equity - USD ($) $ in Millions	Total	Common Stock Issued	Additional Paid-in Capital	Treasury Stock	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Non- controlling Interests
Stockholders' Equity, Attributable to Noncontrolling Interest							$ 253
Increase (Decrease) in Stockholders' Equity
Shares, Issued		378,597,000
Common Stock, Value, Issued at Dec. 31, 2017		$ 473
Additional Paid in Capital at Dec. 31, 2017			$ 594
Treasury Stock, Value at Dec. 31, 2017				$ (3,288)
Retained Earnings at Dec. 31, 2017					$ 5,769
Accumulated Other Comprehensive Income (Loss), Net of Tax, Beginning Balance at Dec. 31, 2017						$ (2,919)
Beginning Balance at Dec. 31, 2017	$ 882
Beginning Balance, treasury stock (in shares) at Dec. 31, 2017				27,491,000
Increase (Decrease) in Stockholders' Equity
Net income in stockholders' equity, excludes redeemable interests' share	1,445				1,410
Net Income (Loss) Attributable to Noncontrolling Interest	35						31
Other comprehensive income, net of tax, attributable to parent	1,186					(224)
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest, Excludes Redeemable Interests' Share	1,441
Other comprehensive income, net of tax, attributable to noncontrolling interest	(22)						(12)
Other Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Non Contolling Interest, Excludes Redeemable Interests' Share	(236)
Stock-based awards exercised or vested	62		(90)	$ 152
Stock-based awards exercised or vested (in shares)				(1,351,000)
Shares repurchased (in shares)				7,495,000
Shares repurchased				$ (820)
Recognition of stock-based compensation	39		39
Dividends declared					$ (1,391)
Dividends declared per share					$ 4.00
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders							(32)
Dividends, Common Stock, Cash and Decrease from Distributions to Noncontrolling Interest Holders	1,423
Other	(9)		5		$ 159	(156)	1
Ending Balance at Dec. 31, 2018	(46)
Common Stock, Value, Issued at Dec. 31, 2018		$ 473
Additional Paid in Capital at Dec. 31, 2018			548
Treasury Stock, Value at Dec. 31, 2018				$ (3,956)
Treasury stock (in shares) at Dec. 31, 2018				33,635,000
Retained Earnings at Dec. 31, 2018					5,947
Accumulated Other Comprehensive Income (Loss), Net of Tax, Ending Balance at Dec. 31, 2018						(3,299)
Stockholders' Equity, Attributable to Noncontrolling Interest							241
Increase (Decrease) in Stockholders' Equity
Common stock, shares, Issued		378,597,000
Net income in stockholders' equity, excludes redeemable interests' share	2,197				2,157
Net Income (Loss) Attributable to Noncontrolling Interest	40						37
Other comprehensive income, net of tax, attributable to parent	2,163					6
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest, Excludes Redeemable Interests' Share	2,194
Other comprehensive income, net of tax, attributable to noncontrolling interest	(31)						(10)
Other Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Non Contolling Interest, Excludes Redeemable Interests' Share	(4)
Stock-based awards exercised or vested	229		(93)	$ 322
Stock-based awards exercised or vested (in shares)				(2,817,000)
Shares repurchased (in shares)				6,331,000
Shares repurchased				$ (820)
Recognition of stock-based compensation	94		94
Dividends declared					$ (1,415)
Dividends declared per share					$ 4.12
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders							(42)
Dividends, Common Stock, Cash and Decrease from Distributions to Noncontrolling Interest Holders	(1,457)
Other	(4)		7		$ (3)	(1)	1
Ending Balance at Dec. 31, 2019	194
Common Stock, Value, Issued at Dec. 31, 2019	473	$ 473
Additional Paid in Capital at Dec. 31, 2019	556		556
Treasury Stock, Value at Dec. 31, 2019	$ (4,454)			$ (4,454)
Treasury stock (in shares) at Dec. 31, 2019	37,149,000			37,149,000
Retained Earnings at Dec. 31, 2019	$ 6,686				6,686
Accumulated Other Comprehensive Income (Loss), Net of Tax, Ending Balance at Dec. 31, 2019	(3,294)					(3,294)
Stockholders' Equity, Attributable to Noncontrolling Interest							227
Increase (Decrease) in Stockholders' Equity
Common stock, shares, Issued		378,597,000
Net income in stockholders' equity, excludes redeemable interests' share	2,396				2,352
Net Income (Loss) Attributable to Noncontrolling Interest	44						41
Other comprehensive income, net of tax, attributable to parent	2,473					121
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest, Excludes Redeemable Interests' Share	2,393
Other comprehensive income, net of tax, attributable to noncontrolling interest	(55)						12
Other Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Non Contolling Interest, Excludes Redeemable Interests' Share	133
Stock-based awards exercised or vested	216		(55)	$ 271
Stock-based awards exercised or vested (in shares)				(2,339,000)
Shares repurchased (in shares)				5,063,000
Shares repurchased				$ (716)
Recognition of stock-based compensation	142		142
Dividends declared					$ (1,458)
Dividends declared per share					$ 4.28
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders							(36)
Dividends, Common Stock, Cash and Decrease from Distributions to Noncontrolling Interest Holders	(1,494)
Other	(1)		14		$ (13)	1	(1)
Ending Balance at Dec. 31, 2020	869
Common Stock, Value, Issued at Dec. 31, 2020	473	$ 473
Additional Paid in Capital at Dec. 31, 2020	657		$ 657
Treasury Stock, Value at Dec. 31, 2020	$ (4,899)			$ (4,899)
Treasury stock (in shares) at Dec. 31, 2020	39,873,000			39,873,000
Retained Earnings at Dec. 31, 2020	$ 7,567				$ 7,567
Accumulated Other Comprehensive Income (Loss), Net of Tax, Ending Balance at Dec. 31, 2020	$ (3,172)					$ (3,172)
Stockholders' Equity, Attributable to Noncontrolling Interest							$ 243
Increase (Decrease) in Stockholders' Equity
Common stock, shares, Issued	378,597,000	378,597,000