Common Stock (Details) - USD ($)	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 23, 2022	Dec. 31, 2021
Equity, Class of Treasury Stock [Line Items]
Common stock repurchased (in shares)		1,000,000
Purchase of treasury shares	$ 500,000,000	$ 119,000,000
Payments for repurchase of common stock	$ 500,000,000	$ 112,000,000
Stock-based compensation, shares issued during period (in shares)	1,800,000	2,000,000
Common Stock
Equity, Class of Treasury Stock [Line Items]
Share repurchases program, authorized amount (up to)			$ 5,000,000,000
Stock repurchase program, remaining authorized repurchase amount	$ 5,800,000,000			$ 1,300,000,000
Common stock repurchased (in shares)	3,200,000