Fair Value Measurements - Not Recorded at Fair Value on a Recurring Basis Convertible Debt (Details) - Convertible notes - USD ($) $ in Millions	Sep. 27, 2025	Jun. 28, 2025	Mar. 31, 2022	Dec. 31, 2019
2028 Notes
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings
Convertible senior notes fair value			$ 629.8
2026 Notes
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings
Convertible senior notes fair value				$ 734.8
Level 2 | Carrying Amount
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings
Convertible senior notes fair value	$ 3,181.3	$ 2,506.2
Level 2 | Estimated Fair Value
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings
Convertible senior notes fair value	4,864.5	3,049.0
Level 2 | 2032 Notes | Carrying Amount
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings
Convertible senior notes fair value	1,254.6	0.0
Level 2 | 2032 Notes | Estimated Fair Value
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings
Convertible senior notes fair value	1,444.3	0.0
Level 2 | 2029 Notes | Carrying Amount
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings
Convertible senior notes fair value	600.4	600.2
Level 2 | 2029 Notes | Estimated Fair Value
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings
Convertible senior notes fair value	1,442.8	925.5
Level 2 | 2028 Notes | Carrying Amount
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings
Convertible senior notes fair value	858.0	857.7
Level 2 | 2028 Notes | Estimated Fair Value
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings
Convertible senior notes fair value	1,195.1	890.2
Level 2 | 2026 Notes | Carrying Amount
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings
Convertible senior notes fair value	468.3	1,048.3
Level 2 | 2026 Notes | Estimated Fair Value
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings
Convertible senior notes fair value	$ 782.3	$ 1,233.3