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Debt - Senior Notes (Details) - Senior Notes - 5.000% Senior Notes - USD ($) $ in Millions		3 Months Ended		9 Months Ended
	Dec. 10, 2021	Mar. 31, 2025	Mar. 31, 2024	Mar. 31, 2025	Mar. 31, 2024
Debt Instrument [Line Items]
Interest rate on debt	5.00%	5.00%		5.00%
Aggregate principal amount of bridge loan	$ 990
Interest expense incurred		$ 13	$ 13	$ 38	$ 38
Senior Notes, Redemption, Period One
Debt Instrument [Line Items]
Redemption price, percentage of principal amount	100.00%
Senior Notes, Redemption, Period Two
Debt Instrument [Line Items]
Redemption percentage	40.00%
Senior Notes, Redemption, Period Three
Debt Instrument [Line Items]
Redemption price, percentage of principal amount	105.00%