Significant Customers (Details) - U.S. Government - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 25, 2022	Sep. 26, 2021	Sep. 25, 2022	Sep. 26, 2021
Revenue, Major Customer [Line Items]
Sales to the U.S. Government, amount	$ 158.1	$ 143.7	$ 453.8	$ 432.1
Government Contracts | Revenue
Revenue, Major Customer [Line Items]
Sales to the U.S. Government, percentage of total revenue (percent)	69.00%	72.00%	70.00%	72.00%