Benefit Plans - Components of Net Periodic Benefit Cost (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 27, 2015	Jun. 28, 2014	Jun. 27, 2015	Jun. 28, 2014
U.S. Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 3.5	$ 3.3	$ 7.0	$ 6.6
Interest cost	3.7	3.8	7.4	7.6
Expected return on plan assets	(2.5)	(2.6)	(5.0)	(5.2)
Net periodic benefit cost	4.7	4.5	9.4	9.0
Non U.S. Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	2.6	2.0	5.2	4.0
Interest cost	3.8	4.7	7.6	9.4
Expected return on plan assets	(4.1)	(4.2)	(8.2)	(8.4)
Net periodic benefit cost	$ 2.3	$ 2.5	$ 4.6	$ 5.0