Condensed Consolidated Statements of Changes in Stockholders' Equity (unaudited) - USD ($) $ in Millions		Total	Noncumulative Convertible Preferred Stock Series B	Noncumulative Convertible Preferred Stock Series C	Series C Preferred Stock	Preferred Stock A (Par Value: $0.01)	Common Stock (Par Value: $0.01)	Paid-in Capital in excess of Par	Paid-in Capital in excess of Par Series C Preferred Stock	(Accumulated deficit)/Retained Earnings	Treasury Stock, at Cost	Accumulated Other Comprehensive Loss, Net of Tax
Beginning balance (in shares) at Dec. 31, 2023	[1]	240,688,790
Beginning balance at Dec. 31, 2023	[1]	$ 8,367				$ 503	$ 2	$ 8,236		$ 443	$ (218)	$ (599)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance and exercise of stock (in shares)	[1]	25,543,655			2,250,333
Issuance and exercise of stock	[1]	$ 102			$ 9		1	101	$ 9
Issuance of warrants to purchase common shares		$ 302						302
Shares issued for restricted stock, net of forfeitures (in shares)	[1]	(86,865)
Shares issued for restricted stock, net of forfeitures	[1]	$ 0						(1)			1
Compensation expense related to restricted stock awards		6						6
Net (loss)		(327)								(327)
Dividends paid on common stock		(35)								(35)
Dividends paid on preferred stock		$ (8)								(8)
Purchase of common stock (in shares)	[1]	(300,714)
Purchase of common stock	[1]	$ (8)									(8)
Other comprehensive income (loss), net of tax		$ (18)										(18)
Ending balance (in shares) at Mar. 31, 2024	[1]	268,095,199
Ending balance at Mar. 31, 2024	[1]	$ 8,390				503	3	8,653		73	(225)	(617)
Beginning balance at Dec. 31, 2023	[1]	0
Preferred Stock Mezzanine (Par Value: $0.01)
Issuance of mezzanine preferred stock			$ 258	$ 337
Issuance of common shares for the conversion of Series B/ C preferred, net	[1]				$ 0
Ending balance at Mar. 31, 2024	[1]	$ 595
Beginning balance (in shares) at Dec. 31, 2024		414,934,628
Beginning balance at Dec. 31, 2024		$ 8,167				503	4	9,282		(763)	(219)	(640)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued for restricted stock, net of forfeitures (in shares)		463,831
Shares issued for restricted stock, net of forfeitures		$ 0						(11)			11
Compensation expense related to restricted stock awards		15						15
Net (loss)		(100)								(100)
Dividends paid on common stock		(4)								(4)
Dividends paid on preferred stock		$ (8)								(8)
Purchase of common stock (in shares)		(376,569)
Purchase of common stock		$ (4)									(4)
Other comprehensive income (loss), net of tax		$ 87										87
Ending balance (in shares) at Mar. 31, 2025		415,021,890
Ending balance at Mar. 31, 2025		$ 8,153				$ 503	$ 4	$ 9,286		$ (875)	$ (212)	$ (553)
Beginning balance at Dec. 31, 2024		1
Ending balance at Mar. 31, 2025		$ 1

[1] On June 27, 2024, the Company announced a 1 for 3 reverse stock split, effective July 11, 2024. This reverse stock split is reflected retroactively in all periods presented. See Note 1 - Organization and Basis of Presentation.