Stock Repurchase Activity (Details) - USD ($)	3 Months Ended						9 Months Ended
	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Dec. 31, 2023	Mar. 31, 2023	Nov. 30, 2021
Equity [Abstract]
Stock repurchase program, authorized amount									$ 4,000,000,000
Repurchased shares under authorization (in shares)	1,400,000						7,400,000
Repurchased shares under authorization, value	$ 115,000,000.0	$ 342,300,000	$ 141,200,000	$ 229,500,000	$ 247,200,000	$ 195,200,000	$ 598,500,000
Stock repurchase program, remaining authorized repurchase amount	$ 2,030,000,000.00						$ 2,030,000,000.00
Common stock held in treasury (in shares)	37,418,710						37,418,710	32,345,809