Equity and Noncontrolling Interests - Narrative (Details) - USD ($)		3 Months Ended		6 Months Ended		12 Months Ended
	Mar. 31, 2023	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2024	Mar. 31, 2023	Sep. 30, 2023	Nov. 30, 2022
Equity [Abstract]
Aggregate amount							$ 600,000,000
Stock repurchased and retired during period (in shares)			1,460,990	4,464,348		1,756,777
Average repurchase price per share (in dollars per share)			$ 34.22	$ 33.60		$ 37.00
Stock repurchased and retired during period, value	$ 28,000,000		$ 50,000,000	$ 150,000,000		$ 65,000,000
Stock repurchased during period, value		$ 50,000,000	$ 30,000,000	150,000,000	$ 30,000,000
Stock repurchase program, remaining authorized repurchase amount		$ 385,000,000		$ 385,000,000

Equity impact of the value of stock that has been repurchased during the period and has not been retired and is not held in treasury. Some state laws may mandate the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.