Shareholders' Equity - Schedule of Preferred Stock (Details) - USD ($) $ / shares in Units, $ in Millions		1 Months Ended
	Jan. 31, 2024	Jan. 31, 2024	Sep. 30, 2018	Apr. 30, 2016	Mar. 31, 2024	Dec. 31, 2023
Series G Preferred Stock, Depository Share
Class of Stock [Line Items]
Preferred stock issued (shares)				20,000,000
Amount outstanding (in shares)				500,000,000
Liquidation preference per share (USD per share)				$ 25
Series G Preferred Stock
Class of Stock [Line Items]
Ownership Interest Per Depositary Share				0.025%
Liquidation preference per share (USD per share)				$ 100,000
Per annum dividend rate				5.35%
Preferred stock					$ 493	$ 493
Series H Preferred Stock, Depository Share
Class of Stock [Line Items]
Preferred stock issued (shares)			500,000
Amount outstanding (in shares)			500,000,000
Liquidation preference per share (USD per share)			$ 1,000
Series H Preferred Stock
Class of Stock [Line Items]
Ownership Interest Per Depositary Share			1.00%
Liquidation preference per share (USD per share)			$ 100,000
Preferred stock					494	494
Series H Preferred Stock | SOFR | Maximum
Class of Stock [Line Items]
Preferred stock, dividend payment rate, basis spread on variable rate, option one			8.185%
Series H Preferred Stock | SOFR | Minimum
Class of Stock [Line Items]
Preferred stock, dividend payment rate, option two			2.801%
Series I Preferred Stock, Depository Share
Class of Stock [Line Items]
Preferred stock issued (shares)		1,500,000
Amount outstanding (in shares)	1,500,000,000	1,500,000,000
Ownership Interest Per Depositary Share		1.00%
Liquidation preference per share (USD per share)	$ 1,000	$ 1,000
Series I Preferred Stock
Class of Stock [Line Items]
Preferred stock issued (shares)	1,500,000
Ownership Interest Per Depositary Share		1.00%
Liquidation preference per share (USD per share)	$ 100,000	$ 100,000
Per annum dividend rate		6.70%
Per annum dividend rate, basis spread on variable rate		6.70%
Preferred stock					$ 1,481	$ 0
Series I Preferred Stock | US Treasury (UST) Interest Rate
Class of Stock [Line Items]
Per annum dividend rate, basis spread on variable rate		2.613%