Employee Benefit Plans - Defined Contribution Savings Plans (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2021
Defined Benefit Plan Disclosure [Line Items]
Defined contribution saving plan costs recorded	$ 58.1	$ 51.1	$ 41.6
401(k) savings plan
Defined Benefit Plan Disclosure [Line Items]
Defined contribution saving plan costs recorded	54.0	47.5	39.0
ERSP
Defined Benefit Plan Disclosure [Line Items]
Defined contribution saving plan costs recorded	$ 4.1	$ 3.6	$ 2.7