Fair Value of Financial Instruments - Additional Information (Details) - USD ($) $ in Millions |
Jun. 29, 2025 |
Dec. 29, 2024 |
Jun. 30, 2024 |
|---|---|---|---|
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
| Short-term investments | $ 0.0 | $ 0.0 | $ 483.0 |
| Carrying Cost | 3,339.8 | 3,401.8 | 3,984.9 |
| 6.05% Notes Due 2034 | |||
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
| Carrying Cost | 500.0 | 500.0 | 500.0 |
| Fair Value, Recurring | |||
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
| Available-for-sale securities | 10.8 | $ 0.6 | 0.8 |
| Short-term investments | $ 483.0 | ||
| Fair Value, Recurring | US Treasury Securities | |||
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
| Short-term investments | $ 10.0 |