Accumulated Other Comprehensive (Loss) Income - Changes in Accumulated Other Comprehensive (Loss) Income by Component (Detail) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2017	Oct. 01, 2016
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	$ (117.9)	$ (76.2)
OCI before reclassifications	26.8	(16.4)
Amounts reclassified from AOCI	(1.6)	(3.4)
Net current-period OCI	25.2	(19.8)
Ending balance	(92.7)	(96.0)
Gains and Losses on Derivative Instruments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(0.1)	(4.7)
OCI before reclassifications	1.2	7.4
Amounts reclassified from AOCI	(1.7)	(3.6)
Net current-period OCI	(0.5)	3.8
Ending balance	(0.6)	(0.9)
Pension Benefit Plan Items [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(14.4)	(10.1)
OCI before reclassifications	(0.5)
Amounts reclassified from AOCI	0.1	0.2
Net current-period OCI	(0.4)	0.2
Ending balance	(14.8)	(9.9)
Currency Translation Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(103.4)	(61.4)
OCI before reclassifications	26.1	(23.8)
Net current-period OCI	26.1	(23.8)
Ending balance	$ (77.3)	$ (85.2)