Shareholders' Equity - Schedule of Preferred Stock (Details) - USD ($) $ / shares in Units, $ in Millions		1 Months Ended
	Jun. 15, 2022	Sep. 30, 2018	Apr. 30, 2016	May 31, 2015	Feb. 28, 2014	Jun. 30, 2022	Dec. 31, 2021
Series D Preferred Stock, Depository Share
Class of Stock [Line Items]
Depositary shares issued (shares)					30,000,000
Amount outstanding (in shares)					750,000,000
Liquidation preference per share (USD per share)					$ 25
Series D Preferred Stock
Class of Stock [Line Items]
Liquidation preference per share (USD per share)					$ 100,000
Preferred stock						$ 742	$ 742
Ownership Interest Per Depositary Share					0.025%
Per annum dividend rate					5.90%
Series D Preferred Stock | London Interbank Offered Rate (LIBOR)
Class of Stock [Line Items]
Per annum dividend rate, basis spread on variable rate					3.108%
Series F Preferred Stock, Depository Share
Class of Stock [Line Items]
Depositary shares issued (shares)				250,000
Amount outstanding (in shares)				250,000,000
Liquidation preference per share (USD per share)				$ 1,000
Series F Preferred Stock
Class of Stock [Line Items]
Liquidation preference per share (USD per share)				$ 100,000
Preferred stock						247	247
Ownership Interest Per Depositary Share				1.00%
Per annum dividend rate				5.25%
Series F Preferred Stock | London Interbank Offered Rate (LIBOR)
Class of Stock [Line Items]
Per annum dividend rate, basis spread on variable rate	5.426%			3.597%
Series G Preferred Stock, Depository Share
Class of Stock [Line Items]
Depositary shares 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]
Liquidation preference per share (USD per share)			$ 100,000
Preferred stock						493	493
Ownership Interest Per Depositary Share			0.025%
Per annum dividend rate			5.35%
Series G Preferred Stock | London Interbank Offered Rate (LIBOR)
Class of Stock [Line Items]
Per annum dividend rate, basis spread on variable rate			3.709%
Series H Preferred Stock, Depository Share
Class of Stock [Line Items]
Depositary shares 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]
Liquidation preference per share (USD per share)		$ 100,000
Preferred stock						$ 494	$ 494
Ownership Interest Per Depositary Share		1.00%
Per annum dividend rate		5.625%
Series H Preferred Stock | London Interbank Offered Rate (LIBOR)
Class of Stock [Line Items]
Per annum dividend rate, basis spread on variable rate		2.539%