Earnings Per Share - Narratives (Details) - USD ($) shares in Thousands, $ in Millions	3 Months Ended		12 Months Ended
	Sep. 30, 2021	Mar. 31, 2021	Dec. 31, 2021	Dec. 31, 2020
Stock Repurchased and Retired [Line Items]
Stock Repurchased During Period, Value			$ 572	$ 58
Common Stock
Stock Repurchased and Retired [Line Items]
Repurchase of common stock (in shares)	11,073	(3,700)	16,924	2,584
Stock Repurchased During Period, Value		$ 119
Parent
Stock Repurchased and Retired [Line Items]
Stock Repurchased During Period, Value			$ 572	$ 58
Preferred Stock
Stock Repurchased and Retired [Line Items]
Stock Repurchased and Retired During Period, Shares	(1,000)		(1,000)
Common Stock and Preferred Stock [Member]
Stock Repurchased and Retired [Line Items]
Stock Repurchased During Period, Value	$ 396