Shareholders' Equity - Narrative (Details) - USD ($)									12 Months Ended
	Nov. 05, 2024	Sep. 12, 2024	Sep. 20, 2022	Jun. 21, 2022	May 11, 2022	Mar. 17, 2022	Jun. 11, 2019	Sep. 12, 2018	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	May 10, 2023	Oct. 28, 2021	May 07, 2013
Class of stock [Line Items]
Amount authorized for repurchase													$ 761,000,000
Number of shares repurchased and placed in treasury	222,007	1,061,853	819,566	3,382,950	890,112	3,305,786			8,600,000	5,400,000	11,700,000
Common stock acquired - Share repurchase		$ (100,000,000)		$ (250,000,000)		$ (275,000,000)			$ (640,000,000)	$ (374,000,000)	$ (750,000,000)
Number of warrants issued and outstanding									0					26,050,846
Percentage of issued warrants to total shares issued and outstanding														9.99%
Preferred stock, par value									$ 0.01	$ 0.01
Issuer's redemption option, period to redeem after a redemption event									90 days
Preferred stock, shares authorized (in shares)									100,000,000	100,000,000
Preferred stock dividends in arrears									$ 0
Number of shares of common stock for each warrant												9,600,000
Rating Agency Event
Class of stock [Line Items]
Redemption price (in dollars per share)									$ 1,020
Regulatory Capital Event
Class of stock [Line Items]
Redemption price (in dollars per share)									$ 1,000
Open market repurchase
Class of stock [Line Items]
Number of shares repurchased and placed in treasury									7,295,206	5,365,303	3,295,800
Common stock acquired - Share repurchase									$ (535,000,000)	$ (374,000,000)	$ (225,000,000)
Series B Preferred Stock
Class of stock [Line Items]
Preferred stock, shares issued (in shares)							300,000		300,000	300,000
Preferred stock, dividend rate, percentage							5.35%		5.35%
Preferred stock, par value							$ 0.01
Liquidation preference (in dollars per share)							$ 1,000
Proceeds from issuance of preferred stock, net							$ 293,000,000
Series A Preferred Stock
Class of stock [Line Items]
Preferred stock, shares issued (in shares)								325,000	325,000	325,000
Preferred stock, dividend rate, percentage								6.125%	7.758%	612.50%
Preferred stock, par value								$ 0.01
Liquidation preference (in dollars per share)								$ 1,000
Proceeds from issuance of preferred stock, net								$ 319,000,000
Depositary Shares | Rating Agency Event
Class of stock [Line Items]
Redemption price (in dollars per share)									$ 25.50
Depositary Shares | Regulatory Capital Event
Class of stock [Line Items]
Redemption price (in dollars per share)									$ 25.00