Consolidated Statement of Shareholders' Equity - USD ($) $ in Millions	Total	Common Shares	Retained Earnings	Accumulated Other Comprehensive Income	Deferred Equity Compensation	Total	Nonredeemable Noncontrolling Interests
Beginning balance (in shares) at Dec. 31, 2019		93,274,987
Beginning balance at Dec. 31, 2019	$ 6,645	$ 1	$ 6,295	$ 342	$ 1	$ 6,639	$ 6
Increase (Decrease) in Shareholders' Equity
Net income	369		362			362	7
Dividends	(69)		(69)			(69)
Common share repurchases (in shares)		(15,787,804)
Common shares repurchases	(446)		(446)			(446)
Share-based compensation and other (in shares)		445,490
Share-based compensation	16		16			16
Reallocation of ownership interest	10						10
Contributions	63						63
Distributions	(45)						(45)
Other comprehensive loss	156			156		156
Other (in shares)		(385,777)
Other	(15)		(15)			(15)
Ending balance (in shares) at Dec. 31, 2020		77,546,896
Ending balance at Dec. 31, 2020	6,684	$ 1	6,143	498	1	6,643	41
Increase (Decrease) in Shareholders' Equity
Net income	418		389			389	29
Dividends	(65)		(65)			(65)
Common share repurchases (in shares)		(10,519,040)
Common shares repurchases	(496)		(496)			(496)
Share-based compensation and other (in shares)		490,568
Share-based compensation	19		19			19
Consolidation	89						89
Contributions	40						40
Distributions	(13)						(13)
Other comprehensive loss	(198)			(198)		(198)
Ending balance (in shares) at Dec. 31, 2021		67,518,424
Ending balance at Dec. 31, 2021	6,478	$ 1	5,990	300	1	6,292	186
Increase (Decrease) in Shareholders' Equity
Net income	138		124			124	14
Dividends	(64)		(64)			(64)
Common share repurchases (in shares)		(8,847,981)
Common shares repurchases	(503)		(503)			(503)
Share-based compensation and other (in shares)		342,597
Share-based compensation	30		30			30
Contributions	89						89
Distributions	(61)						(61)
Other comprehensive loss	(815)			(815)		(815)
Ending balance (in shares) at Dec. 31, 2022		59,013,040
Ending balance at Dec. 31, 2022	$ 5,292	$ 1	$ 5,577	$ (515)	$ 1	$ 5,064	$ 228