Earnings Per Share - Narrative (Details) - USD ($) $ / shares in Units, $ in Millions	1 Months Ended	3 Months Ended		6 Months Ended
	Jul. 31, 2022	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Aug. 18, 2021
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Common stock outstanding (in shares)		416,000,000	429,000,000	416,000,000	429,000,000
Authorized repurchase amount						$ 1,500
Share repurchases (in shares)		2,000,000		7,000,000
Treasury stock acquired, average price per share (in usd per share)		$ 33.89
Repurchase of common stock		$ 60		$ 235	$ 200
Remaining authorized repurchase amount		$ 1,112		$ 1,112
Decrease in average shares outstanding (in shares)		15,000,000
Incremental common shares attributable to dilutive effect of accelerated share repurchase agreements (in shares)			20,000,000
Stock options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Number of anti-dilutive securities (in shares)		0	0	0	0
Subsequent Event
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Share repurchases (in shares)	1,000,000
Treasury stock acquired, average price per share (in usd per share)	$ 32.22
Repurchase of common stock	$ 30
Remaining authorized repurchase amount	$ 1,082
Revolving Credit Agreement
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Credit agreement term				5 years