Accumulated Other Comprehensive (Loss) Income - Changes in Consolidated Accumulated Other Comprehensive (Loss) Income by Component (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Apr. 01, 2017
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	$ 885.7	$ 873.8
OCI before reclassifications	4.5	12.8
Amounts reclassified from AOCI	27.2	(0.6)
Net current-period OCI	31.7	12.2
Balance	1,263.8	845.8
Gains and Losses on Derivative Instruments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	(1.4)	(0.1)
OCI before reclassifications	(4.7)	3.1
Amounts reclassified from AOCI	0.9	(0.7)
Net current-period OCI	(3.8)	2.4
Balance	(5.2)	2.3
Pension Benefit Plan Items [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	(16.8)	(14.4)
Amounts reclassified from AOCI	16.9	0.1
Net current-period OCI	16.9	0.1
Balance	0.1	(14.3)
Currency Translation Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	(76.2)	(103.4)
OCI before reclassifications	9.2	9.7
Amounts reclassified from AOCI	9.4
Net current-period OCI	18.6	9.7
Balance	(57.6)	(93.7)
Accumulated Other Comprehensive (Loss) Income [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	(94.4)	(117.9)
Balance	$ (62.7)	$ (105.7)