Debt (Details) - USD ($) $ in Millions	Jun. 30, 2023	Jun. 30, 2022
Debt Instrument [Line Items]
Notes payable	$ 3,004.9	$ 3,006.0
Less: current portion	(1.2)	(1.2)
Less: unamortized discount and debt issuance costs	(14.7)	(17.7)
Total long-term debt	$ 2,989.0	2,987.1
Notes due on 2025
Debt Instrument [Line Items]
Interest rate, stated percentage	3.375%
Effective Interest Rate	3.47%
Notes payable	$ 1,000.0	1,000.0
Notes due on 2030
Debt Instrument [Line Items]
Interest rate, stated percentage	1.25%
Effective Interest Rate	1.83%
Notes payable	$ 1,000.0	1,000.0
Notes due on 2028
Debt Instrument [Line Items]
Interest rate, stated percentage	1.70%
Effective Interest Rate	1.85%
Notes payable	$ 1,000.0	1,000.0
Other
Debt Instrument [Line Items]
Notes payable	$ 4.9	$ 6.0