Fair Value Measurements - Not Recorded at Fair Value on a Recurring Basis Convertible Debt (Details) - Convertible Debt - USD ($) $ in Millions	Dec. 31, 2022	Jul. 02, 2022	Mar. 31, 2022	Dec. 31, 2019
Level 2 | Carrying Amount
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings
Convertible senior notes fair value	$ 2,321.0	$ 1,876.0
Level 2 | Estimated Fair Value
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings
Convertible senior notes fair value	2,040.3	2,414.9
2028 Notes
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings
Convertible senior notes fair value			$ 629.8
2028 Notes | Level 2 | Carrying Amount
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings
Convertible senior notes fair value	855.0	634.7
2028 Notes | Level 2 | Estimated Fair Value
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings
Convertible senior notes fair value	659.7	735.7
2026 Notes
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings
Convertible senior notes fair value				$ 734.8
2026 Notes | Level 2 | Carrying Amount
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings
Convertible senior notes fair value	1,045.3	831.4
2026 Notes | Level 2 | Estimated Fair Value
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings
Convertible senior notes fair value	907.4	1,065.0
2024 Notes | Level 2 | Carrying Amount
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings
Convertible senior notes fair value	420.7	409.9
2024 Notes | Level 2 | Estimated Fair Value
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings
Convertible senior notes fair value	$ 473.2	$ 614.2