CONDENSED CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY (Unaudited) - USD ($) $ in Millions	Total	Common Stock	Treasury Stock	Additional Paid-In Capital	Retained Deficit	Accumulated Other Comprehensive Income (Loss)
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)	(95)				(102)	7
Dividends declared on common stock	(96)			(96)
Equity compensation, net of tax	5		(4)	9
Ending balance at Mar. 31, 2023	3,333	439	(627)	6,965	(2,440)	(1,004)
Beginning balance at Dec. 31, 2023	3,112	440	(627)	6,915	(2,726)	(890)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive income (loss)	(18)				(9)	(9)
Dividends declared on common stock	(30)			(30)
Equity compensation, net of tax	12	1	(4)	15
Ending balance at Mar. 31, 2024	$ 3,076	$ 441	$ (631)	$ 6,900	$ (2,735)	$ (899)