Preferred Stock - Narrative (Details) - USD ($) $ / shares in Units, $ in Millions		3 Months Ended
	Feb. 28, 2022	Mar. 31, 2022	Dec. 31, 2021
Class of Stock [Line Items]
Carrying Amount		$ 1,014	$ 520
Preferred stock, shares issued (in shares)		31,686	26,750
Noncontrolling interest		$ 295	$ 295
Series G
Class of Stock [Line Items]
Carrying Amount		$ 494	0
Preferred Class A
Class of Stock [Line Items]
Preferred stock, shares issued (in shares)		300,000
Preferred stock, liquidation preference per share (in dollars per share)		$ 1,000
Annual Dividend Rate		3.75%
Noncontrolling interest		$ 295	$ 295
Preferred Class A | LIBOR
Class of Stock [Line Items]
Basis spread on variable rate		0.85%
Series G Convertible Preferred Stock | TD Merger Agreement
Class of Stock [Line Items]
Sale of preferred stock, net (approximately)	$ 494
Preferred stock convertible as a percent of outstanding shares	4.90%
Fixed rate of conversion	5,574.136
Convertible preferred stock, shares issued upon conversion (in shares)	4,000