Income Taxes Tax Charges (Details) - USD ($)	3 Months Ended	6 Months Ended	12 Months Ended
	Dec. 29, 2018	Dec. 28, 2019	Jun. 27, 2020
Tax Transition [Line Items]
Effective Income Tax Rate Reconciliation, Repatriation of Foreign Earnings, Amount	$ 236,900,000
Transition Tax Charge		$ 22,100,000	$ 47,700,000