Post Employment Plans - Additional Information (Details) $ in Millions		3 Months Ended		6 Months Ended		12 Months Ended
		Jun. 27, 2015 USD ($)		Dec. 31, 2015 USD ($) years		Jun. 27, 2015 USD ($)		Jun. 28, 2014 USD ($)		Jun. 29, 2013 USD ($)
Postemployment Benefits [Abstract]
Expected Return on Assets, percent				2.90%
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Expected Future Benefit Payments, Next Twelve Months				$ 1.0
Defined Benefit Plan, Service Cost				$ 2.2		$ 0.9	[1]	$ 0.0	[2]
Employer Nondiscretionary Contribution to Plan				3.00%
Company's contributions to the plan				$ 3.3		2.4	[1]
Post employment benefits, non-current liabilities		$ 140.3		135.0		140.3		89.0	[1]
Post employment benefits, non-current assets		(133.3)	[1]	(134.9)		(133.3)	[1]	(99.6)	[1]
Unfunded accumulated projected benefit obligation		136.6		109.4		136.6		89.0
Accumulated Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net of Tax		9.2		3.2		9.2		11.9
Amount to be amortized from accumulated other comprehensive income (loss) next fiscal year				0.7
Estimated future employer contributions in next fiscal year				4.5
Interest cost				1.7		2.4	[1]	1.4	[2]
Defined Benefit Plan, Expected Return on Plan Assets				(1.8)		(2.7)	[1]	(1.9)	[2]
Defined Benefit Plan, Actuarial Gain (Loss)				0.4		1.0	[1]	0.7	[2]
Defined Benefit Plan, Expected Future Benefit Payments, Year Two				1.0
Defined benefit plan, expected future benefit payments, year three				1.2
Defined Benefit Plan, Expected Future Benefit Payments, Year Four				1.7
Defined Benefit Plan, Expected Future Benefit Payments, Year Five				2.0
Defined Benefit Plan, Expected Future Benefit Payments, Five Fiscal Years Thereafter				12.5
United States
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Company's contributions to the plan				15.8		24.6		25.6		$ 23.0
Ireland
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Service Cost	[2]							0.0
Company's contributions to the plan	[2]							0.0
Defined Contribution Plan, Employer Discretionary Contribution Amount				0.2		0.7		0.5
Post employment benefits, non-current liabilities		140.3	[1]			140.3	[1]	89.0	[2]	0.0	[2]
Post employment benefits, non-current assets		(133.3)		$ 0.0	[2]	(133.3)		(99.6)	[2]
Employer matching contribution, percent of employees' gross pay				18.00%
Interest cost	[2]							1.4
Europe
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Contribution Plan, Employer Discretionary Contribution Amount		0.6		$ 2.9
Foreign Post Employment Benefits [Member] | Israel
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Company's contributions to the plan				0.6		1.0		0.4		0.9
Post employment benefits, non-current liabilities		21.3		21.8		21.3		24.0
Post employment benefits, non-current assets		(17.3)				(17.3)		(19.3)
Deferred Compensation Arrangement with Individual, by Type of Compensation, Pension and Other Postretirement Benefits [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Cash surrender value of insurance policies		32.7		34.6		32.7		28.0
Deferred compensation liability, non-current		32.3		34.5		32.3		28.1
Postretirement Medical Benefits [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Expected Future Benefit Payments, Next Twelve Months				0.1
Defined Benefit Plan, Service Cost				0.3		0.3	[1]	0.5
Company's contributions to the plan				0.0				0.0	[1]
Post employment benefits, non-current liabilities		6.0	[1]	7.0		6.0	[1]	4.6	[1]	3.9
Post employment benefits, non-current assets		0.0	[1]	$ 0.0		0.0	[1]			0.0	[1]
Retiree eligible age | years				65
Accumulated Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net of Tax		(0.1)		$ (0.4)		(0.1)		0.1		$ (0.3)
Interest cost				0.1		0.2	[1]	0.3
Defined Benefit Plan, Expected Return on Plan Assets				0.0		0.0	[1]	0.6
Defined Benefit Plan, Actuarial Gain (Loss)				0.0		0.1	[1]
Defined Benefit Plan, Expected Future Benefit Payments, Year Two				0.2
Defined benefit plan, expected future benefit payments, year three				0.2
Defined Benefit Plan, Expected Future Benefit Payments, Year Four				0.2
Defined Benefit Plan, Expected Future Benefit Payments, Year Five				0.2
Defined Benefit Plan, Expected Future Benefit Payments, Five Fiscal Years Thereafter				$ 2.0
Level 2 | Ireland
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Post employment benefits, non-current assets		$ 0.0				$ 0.0		$ 0.0

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

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