Shareholders' Equity - Common Stock (Details) - USD ($) $ / shares in Units, shares in Millions	1 Months Ended	3 Months Ended
	Sep. 30, 2021	Mar. 31, 2022	Dec. 31, 2021	Sep. 30, 2021	Mar. 31, 2021	Jul. 31, 2021	Apr. 30, 2021	Jan. 31, 2021
Equity, Class of Treasury Stock [Line Items]
Proceeds from issuance of common stock, net of issuance costs	$ 1,900,000,000
Amount of common stock authorized for repurchase						$ 3,000,000,000	$ 425,000,000	$ 475,000,000
2019 Program
Equity, Class of Treasury Stock [Line Items]
Common stock repurchased		$ 0	$ 0	$ 0	$ 475,000,000
Common Stock
Equity, Class of Treasury Stock [Line Items]
Public offering, new shares (in shares)	21.7
Offering price (in dollars per share)	$ 87.60			$ 87.60