Income Taxes Income taxes - Narrative (Details) - USD ($)	3 Months Ended	6 Months Ended	12 Months Ended
	Dec. 29, 2018	Dec. 28, 2019	Jun. 26, 2021	Jun. 27, 2020	Jun. 29, 2019
Schedule of Income Tax [Line Items]
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount			$ (8,200,000)
Effective Income Tax Rate Reconciliation, Repatriation of Foreign Earnings, Amount	$ 236,900,000
Transition Tax Charge		$ 22,100,000	47,700,000
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Percent					2.90%
Reversal of Uncertain Tax Position				$ 40,500,000	$ 221,500,000
Income Tax Examination, Interest Expense				10,700,000	30,100,000
Advance Tax Payment for Examination					140,700,000
Unrecognized Liability of Undistributed Foreign Earnings			28,400,000
Undistributed Earnings of Foreign Subsidiaries			166,800,000
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount			8,200,000
Unrecognized Tax Benefits that Would Impact Effective Tax Rate			119,400,000
Tax Benefit That Would be Offset by Valuation Allowance			52,300,000
Decrease in unrecognized tax benefits is reasonably possible			108,000,000
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense			3,800,000	(5,900,000)	(30,200,000)
Interest and penalties accrued			29,500,000	$ 24,600,000	$ 31,700,000
Internal Revenue Service (IRS) [Member]
Schedule of Income Tax [Line Items]
Net operating loss carryforwards subject to expiration			13,300,000
State and Local Jurisdiction [Member]
Schedule of Income Tax [Line Items]
Net operating loss carryforwards subject to expiration			39,400,000
Tax credit carryforwards with no expiration date			121,100,000
Tax credit carryforwards subject to expiration			6,400,000
Foreign Country [Member]
Schedule of Income Tax [Line Items]
Net operating loss carryforwards with no expiration date			$ 152,200,000