Components of Net Periodic Benefit Cost (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 01, 2017	Jul. 02, 2016	Jul. 01, 2017	Jul. 02, 2016
Defined Benefit Plan Disclosure [Line Items]
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net Gain (Loss), before Tax	$ (0.3)	$ 0.0	$ (12.8)	$ 0.0
Document Period End Date			Jul. 01, 2017
Pension Benefit, U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	2.1	2.4	$ 4.4	4.7
Interest cost	10.9	11.4	21.6	22.7
Expected return on plan assets	(16.1)	(17.0)	(32.2)	(33.9)
Amortization of prior service cost (credit)	0.2	1.3	0.5	2.6
Defined Benefit Plan, Amortization of Gains (Losses)	2.3	1.8	4.2	3.5
Curtailment loss	0.0	0.0	0.0	0.0
Net periodic benefit cost	(0.6)	(0.1)	(1.5)	(0.4)
Pension Benefits, Non-U.S Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	3.3	3.2	6.6	6.4
Interest cost	7.1	9.8	14.1	19.4
Expected return on plan assets	(11.2)	(11.8)	(22.2)	(23.5)
Amortization of prior service cost (credit)	(0.3)	0.0	(0.6)	0.1
Defined Benefit Plan, Amortization of Gains (Losses)	2.3	1.6	4.6	3.1
Curtailment loss	0.3	0.0	12.8	0.1
Net periodic benefit cost	1.5	2.8	15.3	5.6
Other Benefits, U.S Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	0.2	0.1	0.3	0.3
Interest cost	0.3	0.4	0.7	0.8
Expected return on plan assets	0.0	0.0	0.0	0.0
Amortization of prior service cost (credit)	(0.4)	(0.3)	(0.7)	(0.6)
Defined Benefit Plan, Amortization of Gains (Losses)	0.0	0.0	0.0	0.0
Curtailment loss	0.0	0.0	0.0	0.0
Net periodic benefit cost	$ 0.1	$ 0.2	$ 0.3	$ 0.5