Post Employment Plans - Changes in Fair Value of Level 3 Pension Plan Assets (Details) - USD ($) $ in Millions		6 Months Ended	12 Months Ended
		Dec. 31, 2015	Jun. 27, 2015		Jun. 28, 2014
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Business Combinations and Acquisitions, Plan Assets		$ 3.2	$ 49.9	[1]
Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets, beginning	[1]	133.3	99.6
Fair value of plan assets, ending		134.9	133.3	[1]	$ 99.6	[1]
Assets [Member] | Level 3
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Business Combinations and Acquisitions, Plan Assets		13.1	31.5	[1]	0.7	[2]
Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets, beginning	[1]	31.9	0.8	[2]
Unrealized gains		0.7	(0.4)	[1]	0.1	[2]
Fair value of plan assets, ending		$ 45.7	$ 31.9	[1]	$ 0.8	[1],[2]

[1] *Includes Omega activity from March 30, 2015 to

[2] **Includes Elan activity from December 18, 2013 to June 28, 2014.