Debt - Future Interest and Principal Payments (Details) - Convertible Debt $ in Millions	Sep. 30, 2023 USD ($)
Debt Instrument
2024	$ 342.4
2025	18.7
2026	18.7
2027	1,065.9
2028	874.4
Thereafter	617.1
Total payments	2,937.2
2024 Notes
Debt Instrument
2024	323.7
2025	0.0
2026	0.0
2027	0.0
2028	0.0
Thereafter	0.0
Total payments	323.7
2026 Notes
Debt Instrument
2024	5.3
2025	5.3
2026	5.3
2027	1,052.5
2028	0.0
Thereafter	0.0
Total payments	1,068.4
2028 Notes
Debt Instrument
2024	4.3
2025	4.3
2026	4.3
2027	4.3
2028	865.3
Thereafter	0.0
Total payments	882.5
2029 Notes
Debt Instrument
2024	9.1
2025	9.1
2026	9.1
2027	9.1
2028	9.1
Thereafter	617.1
Total payments	$ 662.6

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