Accumulated Other Comprehensive (Loss) Income - Changes by Component (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 30, 2019	Mar. 31, 2018
AOCI Attributable to Parent
Balance	$ 1,170.4	$ 885.7
OCI before reclassifications	2.5	(5.8)
Amounts reclassified from AOCI	2.6	27.2
Total other comprehensive income	5.1	21.4
Balance	1,151.0	1,253.5
Gains and Losses on Derivative Instruments
AOCI Attributable to Parent
Balance	(9.7)	(1.4)
OCI before reclassifications	(8.1)	(4.7)
Amounts reclassified from AOCI	2.6	0.9
Total other comprehensive income	(5.5)	(3.8)
Balance	(15.2)	(5.2)
Pension Benefit Plan Items
AOCI Attributable to Parent
Balance	0.3	(16.8)
OCI before reclassifications	0.0	0.0
Amounts reclassified from AOCI	0.0	16.9
Total other comprehensive income	0.0	16.9
Balance	0.3	0.1
Currency Translation Adjustment Items
AOCI Attributable to Parent
Balance	(92.3)	(76.2)
OCI before reclassifications	10.6	(1.1)
Amounts reclassified from AOCI	0.0	9.4
Total other comprehensive income	10.6	8.3
Balance	(81.7)	(67.9)
Accumulated Other Comprehensive Loss
AOCI Attributable to Parent
Balance	(101.7)	(94.4)
Balance	$ (96.6)	$ (73.0)