Income Taxes (Details) - USD ($) $ in Millions		3 Months Ended			6 Months Ended
	Aug. 01, 2015	Dec. 26, 2015	Sep. 26, 2015	Dec. 27, 2014	Dec. 26, 2015	Dec. 27, 2014
Income Tax Disclosure [Abstract]
Provision for income taxes		$ 0.5	$ 0.0	$ 0.8	$ 0.2	$ 1.4
Increase in gross tax basis	$ 715.0
Effect of Early Adoption of ASU 2015-17
New Accounting Pronouncement, Early Adoption [Line Items]
Reclassification out of net current deferred tax asset		0.1			0.1
Reclassification out of net current deferred tax liability		0.5			0.5
Increase in net non-current deferred tax asset		0.1			0.1
Increase in net non-current deferred tax liability		$ 0.5			$ 0.5