Income Taxes - Unrecognized Tax Benefits Roll Forward (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 25, 2022	Dec. 26, 2021	Dec. 27, 2020
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Balance at beginning of year	$ 50.6	$ 67.8	$ 36.7
Gross increases in prior period tax positions	0.9	0.6	12.7
Gross increase from acquisition	0.0	0.0	13.7
Gross decreases in prior period tax positions	(0.2)	(12.0)	0.0
Gross increases in current period tax positions	28.6	4.6	11.7
Decrease related to settlements with tax authorities	0.0	(2.7)	0.0
Decreases from the expiration of statute of limitations	(2.1)	(7.7)	(7.0)
Balance at end of year	$ 77.8	$ 50.6	$ 67.8