Stockholders' Equity - Summary of Repurchase Activity (Details) - USD ($)			1 Months Ended		2 Months Ended	4 Months Ended	12 Months Ended
	Oct. 29, 2021	Feb. 13, 2020	Dec. 31, 2021	Jul. 31, 2020	Feb. 24, 2022	Feb. 24, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Aug. 31, 2021	Feb. 28, 2021	Jan. 31, 2020	Jan. 31, 2019
Equity, Class of Treasury Stock [Line Items]
Shares Repurchased (in shares)							67,000,000
Unsettled forward contract, Shares Repurchased (in shares)							0
Average Price per Share (in usd per share)							$ 67.86
Value of Shares Repurchased							$ 4,542,000,000
Unsettled forward contract for share repurchase							188,000,000
Shares Repurchased, Remaining Amount Authorized
Beginning balance					$ 1,991,000,000		2,033,000,000
Authorization of additional plan										$ 3,000,000,000	$ 4,000,000,000	$ 5,000,000,000	$ 4,000,000,000
Repurchase of shares							(4,542,000,000)
Unsettled forward contract for share repurchase							(188,000,000)
Ending balance			$ 1,991,000,000				$ 1,991,000,000	$ 2,033,000,000
Treasury shares retired (in shares)							0
Number of shares repurchased under the ASR agreement			3,400,000	74,000,000
Accelerated share repurchase, average price per share (in usd per share)				$ 40.77
Subsequent Event
Shares Repurchased, Remaining Amount Authorized
Authorization of additional plan					$ 4,000,000,000	$ 4,000,000,000
Number of shares repurchased under the ASR agreement					3,300,000	36,000,000
Accelerated share repurchase, average price per share (in usd per share)						$ 69.43
Treasury Stock
Equity, Class of Treasury Stock [Line Items]
Value of Shares Repurchased							$ 6,856,000,000	5,119,000,000	$ 5,002,000,000
Shares Repurchased, Remaining Amount Authorized
Repurchase of shares							$ (6,856,000,000)	$ (5,119,000,000)	$ (5,002,000,000)
Accelerated share repurchases
Equity, Class of Treasury Stock [Line Items]
Shares Repurchased (in shares)	29,300,000	69,000,000
Value of Shares Repurchased	$ 2,500,000,000	$ 3,000,000,000
Unsettled forward contract for share repurchase	187,500,000	450,000,000
Shares Repurchased, Remaining Amount Authorized
Repurchase of shares	(2,500,000,000)	(3,000,000,000)
Unsettled forward contract for share repurchase	(187,500,000)	(450,000,000)
Accelerated share repurchases | Treasury Stock
Equity, Class of Treasury Stock [Line Items]
Shares Repurchased (in shares)							33,000,000
Value of Shares Repurchased	2,125,000,000	2,550,000,000	$ 187,500,000				$ 2,312,000,000
Shares Repurchased, Remaining Amount Authorized
Repurchase of shares	$ (2,125,000,000)	$ (2,550,000,000)	$ (187,500,000)				$ (2,312,000,000)
Accelerated share repurchases | Treasury Stock | Subsequent Event
Equity, Class of Treasury Stock [Line Items]
Value of Shares Repurchased					$ 187,500,000
Shares Repurchased, Remaining Amount Authorized
Repurchase of shares					$ (187,500,000)