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Restructuring Charges (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended		12 Months Ended
Restructuring Charges (Details) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2015	Dec. 27, 2014	Dec. 31, 2016	Jun. 27, 2015	Jun. 28, 2014
Restructuring Reserve [Roll Forward]
Restructuring	$ 24.7	$ 26.9	$ 4.2	$ 31.0	$ 5.1	$ 47.0
Payments		(6.4)		(35.8)	(18.5)	(28.7)
Non-cash adjustments		(1.4)		3.8	(1.4)	(4.8)
Ending balance				14.7
Contract Termination [Member]
Restructuring Reserve [Roll Forward]
Ending balance				5.0
Severance [Member]
Restructuring Reserve [Roll Forward]
Beginning balance		1.6	$ 16.4	20.7	16.4	2.9
Ending balance	$ 20.7	$ 20.7		19.7	$ 1.6	$ 16.4
CHCI
Restructuring Reserve [Roll Forward]
Restructuring				$ 20.9