Investments (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Mar. 28, 2015	Mar. 29, 2014	Mar. 28, 2015	Mar. 29, 2014	Jun. 28, 2014
Schedule of Equity Method Investments [Line Items]
Available-for-sale Securities					$ 20.7
Unrealized loss on equity method investments	(0.3)		(6.6)
Loss from Equity Method Investments		(3.8)		(5.1)
Unrealized Gain (Loss) on Investments [Abstract]
Equity securities, at cost less impairments	17.1		17.1		17.1
Gross unrealized gains	4.9		4.9		3.8
Gross unrealized losses	(0.2)		(0.2)		(0.2)
Estimated fair value of equity securities	21.8		21.8		20.7
Other Noncurrent Assets [Member]
Schedule of Equity Method Investments [Line Items]
Available-for-sale Securities					14.8
Cost Method Investments	8.3		8.3		9.0
Equity Method Investments	52.2		52.2		57.4
Available-for-sale Securities [Member]
Schedule of Equity Method Investments [Line Items]
Available-for-sale Securities, Gross Realized Losses		9.9
Available-for-sale Securities	21.8		21.8		5.9
Equity Method Investments [Member]
Schedule of Equity Method Investments [Line Items]
Loss from Equity Method Investments				$ (2.8)