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Fair Value Measurements - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 28, 2025	Jun. 29, 2024	Jun. 28, 2025	Jun. 29, 2024	Dec. 28, 2024
Fair value, assets and liabilities measured on a recurring basis
Equity securities without readily determinable fair value, amount	$ 55.0		$ 55.0		$ 45.0
Equity securities without readily determinable fair value, downward price adjustment, amount	1.8	$ 15.0	16.1	$ 17.2
Recurring
Fair value, assets and liabilities measured on a recurring basis
Noncurrent investments	7.4		7.4		8.4
Recurring \| Quoted Prices in Active Markets (Level 1)
Fair value, assets and liabilities measured on a recurring basis
Noncurrent investments	7.4		7.4		8.4
Recurring \| Cash and cash equivalents
Fair value, assets and liabilities measured on a recurring basis
Current investments	6.4		6.4		1.5
Recurring \| Other Current Assets
Fair value, assets and liabilities measured on a recurring basis
Current investments	$ 39.8		$ 39.8		$ 38.1