Stockholders' Equity (Accumulated Other Comprehensive Loss) (Details) - USD ($) $ in Millions	3 Months Ended
	Sep. 26, 2015	Sep. 27, 2014
Accumulated Other Comprehensive Income Loss Net of Tax [Abstract]
Accumulated other comprehensive (loss) income, beginning balance	$ (77.7)	$ (8.7)
Other comprehensive income (loss) before reclassifications	(23.0)	(26.1)
Less: gains reclassified from accumulated other comprehensive income to earnings	2.4	0.8
Other comprehensive loss, net of tax	(25.4)	(26.9)
Accumulated other comprehensive (loss) income, ending balance	(103.1)	(35.6)
Accumulated other comprehensive income related to cash flow hedges, accumulated tax	(0.8)	(2.5)
Other comprehensive income (loss), reclassification adjustment from AOCI on derivatives, tax	(1.2)	(0.4)
Impairment losses on investments and pension liability gain (loss) in other comprehensive income, tax	0.5	1.5
Gains (Losses) on Cash Flow Hedges
Accumulated Other Comprehensive Income Loss Net of Tax [Abstract]
Accumulated other comprehensive (loss) income, beginning balance	4.4	0.6
Other comprehensive income (loss) before reclassifications	(0.9)	4.6
Less: gains reclassified from accumulated other comprehensive income to earnings	2.4	0.8
Other comprehensive loss, net of tax	(3.3)	3.8
Accumulated other comprehensive (loss) income, ending balance	1.1	4.4
Unrealized Losses on Available- for-Sale Securities
Accumulated Other Comprehensive Income Loss Net of Tax [Abstract]
Accumulated other comprehensive (loss) income, beginning balance	0.5	1.8
Other comprehensive income (loss) before reclassifications	(0.5)	(0.5)
Less: gains reclassified from accumulated other comprehensive income to earnings	0.0	0.0
Other comprehensive loss, net of tax	(0.5)	(0.5)
Accumulated other comprehensive (loss) income, ending balance	0.0	1.3
Cumulative Translation Adjustment
Accumulated Other Comprehensive Income Loss Net of Tax [Abstract]
Accumulated other comprehensive (loss) income, beginning balance	(81.7)	(9.2)
Other comprehensive income (loss) before reclassifications	(21.6)	(30.2)
Less: gains reclassified from accumulated other comprehensive income to earnings	0.0	0.0
Other comprehensive loss, net of tax	(21.6)	(30.2)
Accumulated other comprehensive (loss) income, ending balance	(103.3)	(39.4)
Other
Accumulated Other Comprehensive Income Loss Net of Tax [Abstract]
Accumulated other comprehensive (loss) income, beginning balance	(0.9)	(1.9)
Other comprehensive income (loss) before reclassifications	0.0	0.0
Less: gains reclassified from accumulated other comprehensive income to earnings	0.0	0.0
Other comprehensive loss, net of tax	0.0	0.0
Accumulated other comprehensive (loss) income, ending balance	$ (0.9)	$ (1.9)