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Restructuring Activities (Restructuring Liability) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Dec. 26, 2014	Dec. 27, 2013	Dec. 26, 2014	Dec. 27, 2013	Jun. 27, 2014
Restructuring Reserve [Roll Forward]
Restructuring liabilities as of June 27, 2014			$ 5.2us-gaap_RestructuringReserve
Provision and adjustments	0us-gaap_RestructuringCharges	0.3us-gaap_RestructuringCharges	1.5us-gaap_RestructuringCharges	4.8us-gaap_RestructuringCharges
Cash payments			(2.2)us-gaap_PaymentsForRestructuring
Restructuring liabilities as of December 26, 2014	4.5us-gaap_RestructuringReserve		4.5us-gaap_RestructuringReserve
Current portion of restructuring liabilities as of December 26, 2014	2.3us-gaap_RestructuringReserveCurrent		2.3us-gaap_RestructuringReserveCurrent		2.8us-gaap_RestructuringReserveCurrent
Long-term portion included in other long-term liabilities as of December 26, 2014	2.2us-gaap_RestructuringReserveNoncurrent		2.2us-gaap_RestructuringReserveNoncurrent
Severance and Benefits
Restructuring Reserve [Roll Forward]
Restructuring liabilities as of June 27, 2014			1.5
Provision and adjustments			0
Cash payments			(1.1)
Restructuring liabilities as of December 26, 2014	0.4		0.4
Facilities and Other
Restructuring Reserve [Roll Forward]
Restructuring liabilities as of June 27, 2014			3.7
Provision and adjustments			1.5
Cash payments			(1.1)
Restructuring liabilities as of December 26, 2014	$ 4.1		$ 4.1