Condensed Consolidated Statements of Equity - USD ($) $ in Millions	Common Stock	Additional Paid-in Capital	Treasury Stock, Common	Accumulated Other Comprehensive Income (Loss)	Retained Earnings	Noncontrolling Interest	Total
Balance at beginning of period at Dec. 31, 2020	$ 1	$ 1,150	$ (1,024)	$ (1,133)	$ 3,957	$ 21
Increase (Decrease) in Stockholders' Equity
Net income (loss)					(246)	4
Dividends declared					(44)
Repurchases of common stock			(14)
Share-based compensation, net of issuance		5	16
Other comprehensive income (loss)				(31)		1
Balance at end of period at Mar. 31, 2021	1	1,155	(1,022)	(1,164)	3,667	26
Balance at beginning of period at Dec. 31, 2020	1	1,150	(1,024)	(1,133)	3,957	21
Increase (Decrease) in Stockholders' Equity
Net income (loss)					(68)	7
Dividends declared					(87)	(7)
Repurchases of common stock			(24)
Share-based compensation, net of issuance		4	19
Other comprehensive income (loss)				27		1
Balance at end of period at Jun. 30, 2021	1	1,154	(1,029)	(1,106)	3,802	22
Balance at beginning of period at Mar. 31, 2021	1	1,155	(1,022)	(1,164)	3,667	26
Increase (Decrease) in Stockholders' Equity
Net income (loss)					178	3
Dividends declared					(43)	(7)
Repurchases of common stock			(10)
Share-based compensation, net of issuance		(1)	3
Other comprehensive income (loss)				58
Balance at end of period at Jun. 30, 2021	1	1,154	(1,029)	(1,106)	3,802	22
Balance at beginning of period at Dec. 31, 2021	1	1,158	(1,061)	(897)	3,899	18	$ 3,118
Increase (Decrease) in Stockholders' Equity
Net income (loss)					130	3
Dividends declared					(43)
Repurchases of common stock			(39)
Share-based compensation, net of issuance		2	9
Other comprehensive income (loss)				134		(2)
Balance at end of period at Mar. 31, 2022	1	1,160	(1,091)	(763)	3,986	19
Balance at beginning of period at Dec. 31, 2021	1	1,158	(1,061)	(897)	3,899	18	3,118
Increase (Decrease) in Stockholders' Equity
Net income (loss)					272	5
Dividends declared					(86)	(4)
Repurchases of common stock			(83)
Share-based compensation, net of issuance		4	11
Fair market value adjustment to non-controlling interests		(29)
Other comprehensive income (loss)				(43)		(4)
Balance at end of period at Jun. 30, 2022	1	1,133	(1,133)	(940)	4,085	15	3,161
Balance at beginning of period at Mar. 31, 2022	1	1,160	(1,091)	(763)	3,986	19
Increase (Decrease) in Stockholders' Equity
Net income (loss)					142	2
Dividends declared					(43)	(4)
Repurchases of common stock			(44)
Share-based compensation, net of issuance		2	2
Fair market value adjustment to non-controlling interests		(29)
Other comprehensive income (loss)				(177)		(2)
Balance at end of period at Jun. 30, 2022	$ 1	$ 1,133	$ (1,133)	$ (940)	$ 4,085	$ 15	$ 3,161