Components of Net Periodic Benefit Cost (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 29, 2019	Jun. 30, 2018	Jun. 29, 2019	Jun. 30, 2018
Defined Benefit Plan Disclosure [Line Items]
Document Period End Date			Jun. 29, 2019
Foreign Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 3.7	$ 3.8	$ 7.4	$ 7.7
Interest cost	7.6	7.2	15.3	14.7
Expected return on plan assets	(11.4)	(11.8)	(23.0)	(24.0)
Amortization of prior service cost (credit)	(0.2)	(0.2)	(0.4)	(0.6)
Defined Benefit Plan, Amortization of Gain (Loss)	2.2	2.3	4.4	4.7
Curtailment loss	0.1	0.1	0.2	0.2
Net periodic benefit cost	2.0	1.4	3.9	2.7
Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	0.0	0.2	0.1	0.3
Interest cost	0.4	0.4	0.8	0.8
Expected return on plan assets	0.0	0.0	0.0	0.0
Amortization of prior service cost (credit)	(0.4)	(0.4)	(0.7)	(0.7)
Defined Benefit Plan, Amortization of Gain (Loss)	0.0	0.0	(0.1)	0.0
Curtailment loss	0.0	0.0	0.0	0.0
Net periodic benefit cost	0.0	0.2	0.1	0.4
Domestic Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	3.2	2.0	6.2	3.8
Interest cost	11.7	11.0	23.5	21.4
Expected return on plan assets	(15.5)	(17.5)	(30.9)	(34.3)
Amortization of prior service cost (credit)	0.3	0.3	0.5	0.5
Defined Benefit Plan, Amortization of Gain (Loss)	2.0	2.0	4.0	3.9
Curtailment loss	0.0	0.0	0.0	0.0
Net periodic benefit cost	$ 1.7	$ (2.2)	$ 3.3	$ (4.7)