Consolidated Statements Of Changes In Stockholders' Equity Statement - USD ($) $ in Millions	Total	Common Stock	Common Stock, Held in Treasury	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Loss	Noncontrolling Interests
Beginning balances at Dec. 31, 2020	$ 6,578	$ 1	$ (401)	$ 569	$ 5,938	$ (64)	$ 535
Beginning balance, shares issued at Dec. 31, 2020		134,651,380
Beginning balance, Treasury shares at Dec. 31, 2020			6,821,174
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	253				242		11
Other comprehensive loss	(7)					(6)	(1)
Shares issued—stock- based compensation (in shares)			(301,112)
Shares issued—stock-based compensation	9		$ 22	(13)
Stock-based compensation	8			8
Dividends declared	(35)				(35)
Distributions to noncontrolling interests	(11)						(11)
Noncontrolling interests	30						30
Ending balances at Mar. 31, 2021	6,825	$ 1	$ (379)	564	6,145	(70)	564
Ending balance, shares issued at Mar. 31, 2021		134,651,380
Ending balance, Treasury shares at Mar. 31, 2021			6,520,062
Beginning balances at Dec. 31, 2020	6,578	$ 1	$ (401)	569	5,938	(64)	535
Beginning balance, shares issued at Dec. 31, 2020		134,651,380
Beginning balance, Treasury shares at Dec. 31, 2020			6,821,174
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	1,409
Other comprehensive loss	(11)
Ending balances at Sep. 30, 2021	7,869	$ 1	$ (406)	576	7,202	(75)	571
Ending balance, shares issued at Sep. 30, 2021		134,651,380
Ending balance, Treasury shares at Sep. 30, 2021			6,830,317
Beginning balances at Mar. 31, 2021	6,825	$ 1	$ (379)	564	6,145	(70)	564
Beginning balance, shares issued at Mar. 31, 2021		134,651,380
Beginning balance, Treasury shares at Mar. 31, 2021			6,520,062
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	536				522		14
Other comprehensive loss	15					14	1
Shares issued—stock- based compensation (in shares)			(18,397)
Shares issued—stock-based compensation	1		$ 1
Stock-based compensation	7			7
Dividends declared	(34)				(34)
Distributions to noncontrolling interests	(11)						(11)
Ending balances at Jun. 30, 2021	7,339	$ 1	$ (378)	571	6,633	(56)	568
Ending balance, shares issued at Jun. 30, 2021		134,651,380
Ending balance, Treasury shares at Jun. 30, 2021			6,501,665
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	620				607		13
Other comprehensive loss	(19)					(19)	0
Common stock repurchased (in shares)			355,800
Common stock repurchased	(30)		$ (30)
Shares issued—stock- based compensation (in shares)			(27,148)
Shares issued—stock-based compensation	0		$ 2	(2)
Stock-based compensation	7			7
Dividends declared	(38)				(38)
Distributions to noncontrolling interests	(10)						(10)
Ending balances at Sep. 30, 2021	7,869	$ 1	$ (406)	576	7,202	(75)	571
Ending balance, shares issued at Sep. 30, 2021		134,651,380
Ending balance, Treasury shares at Sep. 30, 2021			6,830,317
Beginning balances at Dec. 31, 2021	8,528	$ 1	$ (399)	581	7,808	(36)	573
Beginning balance, shares issued at Dec. 31, 2021		134,651,380
Beginning balance, Treasury shares at Dec. 31, 2021			6,735,639
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	764				756		8
Other comprehensive loss	(11)					(9)	(2)
Shares issued—stock- based compensation (in shares)			(403,743)
Shares issued—stock-based compensation	10		$ 27	(17)
Stock-based compensation	8			8
Dividends declared	(39)				(39)
Distributions to noncontrolling interests	(10)						(10)
Noncontrolling interests	2						2
Ending balances at Mar. 31, 2022	9,252	$ 1	$ (372)	572	8,525	(45)	571
Ending balance, shares issued at Mar. 31, 2022		134,651,380
Ending balance, Treasury shares at Mar. 31, 2022			6,331,896
Beginning balances at Dec. 31, 2021	8,528	$ 1	$ (399)	581	7,808	(36)	573
Beginning balance, shares issued at Dec. 31, 2021		134,651,380
Beginning balance, Treasury shares at Dec. 31, 2021			6,735,639
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	2,049
Other comprehensive loss	(203)
Ending balances at Sep. 30, 2022	10,188	$ 1	$ (439)	590	9,700	(231)	567
Ending balance, shares issued at Sep. 30, 2022		134,651,380
Ending balance, Treasury shares at Sep. 30, 2022			6,992,435
Beginning balances at Mar. 31, 2022	9,252	$ 1	$ (372)	572	8,525	(45)	571
Beginning balance, shares issued at Mar. 31, 2022		134,651,380
Beginning balance, Treasury shares at Mar. 31, 2022			6,331,896
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	873				858		15
Other comprehensive loss	(73)					(71)	(2)
Common stock repurchased (in shares)			412,490
Common stock repurchased	(41)		$ (41)
Shares issued—stock- based compensation (in shares)			(103,079)
Shares issued—stock-based compensation	6		$ 5	1
Stock-based compensation	9			9
Dividends declared	(38)				(38)
Distributions to noncontrolling interests	(14)						(14)
Ending balances at Jun. 30, 2022	9,974	$ 1	$ (408)	582	9,345	(116)	570
Ending balance, shares issued at Jun. 30, 2022		134,651,380
Ending balance, Treasury shares at Jun. 30, 2022			6,641,307
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	412				401		11
Other comprehensive loss	(119)					(115)	(4)
Common stock repurchased (in shares)			372,430
Common stock repurchased	(32)		$ (32)
Shares issued—stock- based compensation (in shares)			(21,302)
Shares issued—stock-based compensation	1		$ 1
Stock-based compensation	8			8
Dividends declared	(46)				(46)
Distributions to noncontrolling interests	(10)						(10)
Ending balances at Sep. 30, 2022	$ 10,188	$ 1	$ (439)	$ 590	$ 9,700	$ (231)	$ 567
Ending balance, shares issued at Sep. 30, 2022		134,651,380
Ending balance, Treasury shares at Sep. 30, 2022			6,992,435