Shareholders' Deficit (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Repurchase Of Shares Of Common Stock [Line Items]
Repurchase of shares of Common Stock, value	$ 0	$ 150	$ 50	$ 557
Stock Repurchase Program, Remaining Authorized Repurchase Amount	1,700		1,700
May 2021
Repurchase Of Shares Of Common Stock [Line Items]
Repurchase of shares of Common Stock, value				557
Stock Repurchase Program, Remaining Authorized Repurchase Amount	0		0
September 2022
Repurchase Of Shares Of Common Stock [Line Items]
Repurchase of shares of Common Stock, value			50	$ 0
Stock Repurchase Program, Authorized Amount	2,000		2,000
Stock Repurchase Program, Remaining Authorized Repurchase Amount	$ 1,700		$ 1,700
Issued Common Stock
Repurchase Of Shares Of Common Stock [Line Items]
Shares Repurchased		2,000,000	387,000	4,635,000
Repurchase of shares of Common Stock, value		$ 15	$ 24	$ 37
Issued Common Stock | May 2021
Repurchase Of Shares Of Common Stock [Line Items]
Shares Repurchased			0	4,635,000
Issued Common Stock | September 2022
Repurchase Of Shares Of Common Stock [Line Items]
Shares Repurchased			387,000	0