Debt - Exchangeable Senior Notes Narrative (Details) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
	Aug. 15, 2024	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024	Sep. 30, 2024
Exchangeable Senior Notes Due 2030 | Convertible Debt
Debt Instrument [Line Items]
Debt instrument, face amount						$ 1,000.0
Debt issuance costs		$ 19.2		$ 19.2
Effective interest rate (as a percent)		3.47%		3.47%
Interest expense, debt		$ 8.5		$ 17.0
Contractual coupon rate interest expense		7.8		15.6
Amortization of debt issuance costs		0.7		1.4
2026 Notes | Convertible Debt
Debt Instrument [Line Items]
Debt issuance costs		$ 15.3		$ 15.3
Effective interest rate (as a percent)		2.26%		2.26%
Interest expense, debt		$ 5.6	$ 5.6	$ 11.1	$ 11.1
Contractual coupon rate interest expense		5.0	5.0	10.0	10.0
Amortization of debt issuance costs		$ 0.6	0.6	$ 1.1	1.1
2024 Notes | Convertible Debt
Debt Instrument [Line Items]
Effective interest rate (as a percent)	1.79%
Interest expense, debt			2.5		5.0
Contractual coupon rate interest expense			2.1		4.2
Amortization of debt issuance costs			$ 0.4		$ 0.8
Repayments of convertible debt	$ 575.0
Jazz Investments I Limited
Debt Instrument [Line Items]
Percentage of ownership (as a percent)		100.00%		100.00%