Restructuring and Related Charges (Details) $ in Millions	3 Months Ended		6 Months Ended
	Dec. 26, 2015 USD ($)	Dec. 27, 2014 USD ($)	Dec. 26, 2015 USD ($) employee	Dec. 27, 2014 USD ($)	Jun. 27, 2015 USD ($)
Summary of Restructuring Plans
Accrual balance at the beginning of the period			$ 4.9
Restructuring charges accrued	$ 1.1	$ 3.8	2.1	$ 5.6
Accrual balance at the end of the period	4.3		4.3
Restructuring accrual and related charges	4.3		4.3		$ 3.2
Long-term restructuring liability	0.0		0.0		1.7
Other Current Liabilities
Summary of Restructuring Plans
Restructuring accrual and related charges	4.3		4.3		3.2
Other Noncurrent Liabilities
Summary of Restructuring Plans
Long-term restructuring liability					1.7
Severance and Retention
Summary of Restructuring Plans
Accrual balance at the beginning of the period			4.9
Restructuring charges accrued			0.8
Cash Settlements			(1.4)
Accrual balance at the end of the period	4.3		4.3
Fiscal 2015, Separation Restructuring Plan | Severance and Retention
Summary of Restructuring Plans
Accrual balance at the beginning of the period			4.6
Restructuring charges accrued			0.7
Cash Settlements			(1.4)
Accrual balance at the end of the period	3.9		$ 3.9
Number of employees expected to be reduced (in employee) | employee			200
Restructuring charges (benefit)	(0.3)		$ 0.7
Fiscal 2013, Other Plans | Severance and Retention
Summary of Restructuring Plans
Accrual balance at the beginning of the period			0.3
Restructuring charges accrued			0.1
Cash Settlements			0.0
Accrual balance at the end of the period	0.4		0.4
Ottawa Lease Exit Costs
Summary of Restructuring Plans
Cash Settlements	(0.2)		(0.3)
Fair value of remaining operating leases, net of sublease income	0.8		0.8		1.1
Ottawa Lease Exit Costs | Other Current Liabilities
Summary of Restructuring Plans
Restructuring accrual and related charges	0.5		0.5		0.6
Ottawa Lease Exit Costs | Other Noncurrent Liabilities
Summary of Restructuring Plans
Long-term restructuring liability	$ 0.3		$ 0.3		$ 0.5