Stockholders' Equity (AOCI) (Details) - USD ($)	3 Months Ended		6 Months Ended
	Dec. 28, 2019	Dec. 29, 2018	Dec. 28, 2019	Dec. 29, 2018
Accumulated Other Comprehensive (Loss) Income, Net of Tax [Rollforward]
Beginning balance	$ 3,086,900,000	$ 3,309,600,000	$ 3,513,400,000	$ 3,244,600,000
Other comprehensive income (loss) before reclassifications			(1,700,000)	(8,600,000)
Less: amounts reclassified from accumulated other comprehensive income to earnings			100,000	100,000
Other comprehensive income (loss), net of tax	11,000,000.0	(3,400,000)	(1,800,000)	(8,700,000)
Ending balance	3,322,400,000	3,488,400,000	3,322,400,000	3,488,400,000
Amounts reclassified from AOCI, tax			500,000	(300,000)
Unrealized (Losses) Gains on Cash Flow Hedging Derivatives
Accumulated Other Comprehensive (Loss) Income, Net of Tax [Rollforward]
Beginning balance			(4,500,000)	1,400,000
Other comprehensive income (loss) before reclassifications			3,700,000	1,400,000
Less: amounts reclassified from accumulated other comprehensive income to earnings			(1,600,000)	100,000
Other comprehensive income (loss), net of tax			5,300,000	1,300,000
Ending balance	800,000	2,700,000	800,000	2,700,000
Other comprehensive income (loss)			400,000	(1,500,000)
Unrealized Gains (Losses) on Available- for-Sale Investments
Accumulated Other Comprehensive (Loss) Income, Net of Tax [Rollforward]
Beginning balance			(500,000)	0
Other comprehensive income (loss) before reclassifications			0	100,000
Less: amounts reclassified from accumulated other comprehensive income to earnings			0	0
Other comprehensive income (loss), net of tax			0	100,000
Ending balance	(500,000)	100,000	(500,000)	100,000
Cumulative Translation Adjustment
Accumulated Other Comprehensive (Loss) Income, Net of Tax [Rollforward]
Beginning balance			(79,900,000)	(85,300,000)
Other comprehensive income (loss) before reclassifications			(5,400,000)	(10,100,000)
Less: amounts reclassified from accumulated other comprehensive income to earnings			0	0
Other comprehensive income (loss), net of tax			(5,400,000)	(10,100,000)
Ending balance	(85,300,000)	(95,400,000)	(85,300,000)	(95,400,000)
Other
Accumulated Other Comprehensive (Loss) Income, Net of Tax [Rollforward]
Beginning balance			1,700,000	1,100,000
Other comprehensive income (loss) before reclassifications			0	0
Less: amounts reclassified from accumulated other comprehensive income to earnings			1,700,000	0
Other comprehensive income (loss), net of tax			(1,700,000)	0
Ending balance	0	1,100,000	0	1,100,000
Other comprehensive income (loss)			0	600,000
Total
Accumulated Other Comprehensive (Loss) Income, Net of Tax [Rollforward]
Beginning balance	(96,000,000.0)	(88,100,000)	(83,200,000)	(82,800,000)
Ending balance	$ (85,000,000.0)	$ (91,500,000)	$ (85,000,000.0)	$ (91,500,000)