Earnings Per Share and Common Stock - Narrative (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended				6 Months Ended		12 Months Ended
	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Aug. 18, 2021
Earnings Per Share [Abstract]
Common stock outstanding (in shares)	412,000,000		416,000,000		412,000,000	416,000,000	412,000,000
Authorized repurchase amount								$ 1,500
Remaining authorized repurchase amount	$ 822				$ 822		$ 822
Share repurchases (in shares)	2,246,294	576,629	1,770,271	5,147,307	2,822,923	6,917,578	7,000,000
Treasury stock acquired, average price per share (in usd per share)	$ 44.52	$ 43.36	$ 33.89	$ 34.00	$ 44.28	$ 33.97
Repurchase of common stock					$ 125	$ 235
Decrease in average shares outstanding, basic (in shares)	5,000,000
Stock Options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Number of anti-dilutive securities (in shares)	0		0		0	0