CONDENSED CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY (Unaudited) - USD ($) $ in Millions	Total	Common Stock	Treasury Stock	Additional Paid-In Capital	Retained Earnings (Deficit)	Accumulated Other Comprehensive Loss
Beginning balance at Dec. 31, 2021	$ 4,158	$ 450	$ (609)	$ 7,734	$ (2,535)	$ (882)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive income (loss)	372				427	(55)
Dividends declared on common stock	(192)			(192)
Equity compensation, net of tax	10	2	(14)	22
Common stock purchased and retired	(325)	(13)		(312)
Other	(1)			(1)
Ending balance at Jun. 30, 2022	4,022	439	(623)	7,251	(2,108)	(937)
Beginning balance at Mar. 31, 2022	4,047	441	(623)	7,384	(2,307)	(848)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive income (loss)	110				199	(89)
Dividends declared on common stock	(95)			(95)
Equity compensation, net of tax	10			10
Common stock purchased and retired	(50)	(2)		(48)
Ending balance at Jun. 30, 2022	4,022	439	(623)	7,251	(2,108)	(937)
Beginning balance at Dec. 31, 2022	3,519	439	(623)	7,052	(2,338)	(1,011)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive income (loss)	(94)				(84)	(10)
Dividends declared on common stock	(126)			(126)
Equity compensation, net of tax	16	1	(4)	19
Ending balance at Jun. 30, 2023	3,315	440	(627)	6,945	(2,422)	(1,021)
Beginning balance at Mar. 31, 2023	3,333	439	(627)	6,965	(2,440)	(1,004)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive income (loss)	1				18	(17)
Dividends declared on common stock	(30)			(30)
Equity compensation, net of tax	11	1		10
Ending balance at Jun. 30, 2023	$ 3,315	$ 440	$ (627)	$ 6,945	$ (2,422)	$ (1,021)