Commitments and Contingencies (Details) - USD ($) $ in Millions	6 Months Ended		12 Months Ended
	Dec. 31, 2015	Dec. 27, 2014	Jun. 27, 2015	Jun. 28, 2014	Jun. 29, 2013	Mar. 28, 2015
Loss Contingencies [Line Items]
Purchase obligation	$ 403.7
Loss contingency accrual, payments	15.0
Other expenses, net	(26.9)	$ (61.9)	$ (343.2)	$ (25.1)	$ (5.6)
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
2016	45.8
2017	34.1
2018	31.7
2019	20.2
2020	16.1
Thereafter	21.7
Rent expense under all leases	26.2		$ 39.2	34.5	$ 27.6
Texas Medicaid [Member]
Loss Contingencies [Line Items]
Loss contingency receivable						$ 7.0
Loss contingency accrual				$ 15.0		$ 24.0
Other expenses, net	$ 2.0