Share Repurchases (Details) - USD ($) shares in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Oct. 31, 2020
Class of Stock [Line Items]
Payments for repurchase of common stock		$ 500,000,000.0	$ 1,050,000,000
2020 Share Repurchase Program
Class of Stock [Line Items]
Stock Repurchase Program, Authorized Amount				$ 5,000,000,000
Repurchase of common stock, at cost, shares	1.6		3.8
Payments for repurchase of common stock	$ 450,000,000		$ 1,100,000,000
Amount remaining under 2019 Share Repurchase Program		$ 2,300,000,000