Debt - Components of Convertible Debt (Details) - Convertible Debt - USD ($) $ in Millions	Jun. 30, 2023	Jun. 30, 2022
0% Convertible Senior Notes Due February 15, 2026
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net [Abstract]
Principal	$ 1,000.0	$ 1,000.0
Unamortized debt discount	0.0	(121.5)
Unamortized debt issuance costs	(12.0)	(14.5)
Net carrying amount	988.0	864.0
Convertible Senior Notes Outstanding On November 16, 2025 \| Term Loan Facility
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net [Abstract]
Principal	750.0	750.0
Principal Payments	(7.5)	0.0
Unamortized debt discount	(27.8)	(33.1)
Unamortized debt issuance costs	(16.3)	(19.4)
Net carrying amount	$ 698.4	$ 697.5

Amount of the total principal payments made during the annual reporting period.

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Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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Amount, after accumulated amortization, of debt discount.

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Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

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