Post Employment Plans - Contributions to the plans (Details) - USD ($) $ in Millions		6 Months Ended	12 Months Ended
		Dec. 31, 2015	Dec. 31, 2016	Jun. 27, 2015		Jun. 28, 2014
Multiemployer Plans [Line Items]
Employer contributions		$ 1.4	$ 8.2
United states
Multiemployer Plans [Line Items]
Employer contributions		15.8	23.2	$ 24.6		$ 25.6
Ireland
Multiemployer Plans [Line Items]
Employer contributions	[1]			2.4
Defined Contribution Plan, Employer Discretionary Contribution Amount		0.2	0.6	0.7		$ 0.5
Europe [Member]
Multiemployer Plans [Line Items]
Defined Contribution Plan, Employer Discretionary Contribution Amount		$ 2.9	$ 2.3	$ 0.6	[1]

[1] Includes Omega activity from March 30, 2015 to June 27, 2015.