Income Taxes (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 29, 2023	Dec. 30, 2022	Dec. 31, 2021	Jan. 01, 2021
Operating Loss Carryforwards [Line Items]
Effective tax rate	12.80%	21.00%	14.20%
Foreign earnings repatriated	$ 371.3
Unrecognized tax benefits	88.3	$ 76.5	$ 64.2	$ 64.1
Unrecognized tax benefits that would impact effective tax rate	59.5	51.6
Payment of interest and penalties	9.9	$ 8.4
IRS
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	19.1
Foreign Tax Authority
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	86.3
California Franchise Tax Board | Research Tax Credit Carryforward
Operating Loss Carryforwards [Line Items]
Tax credit carryforward	$ 35.3