Accumulated Other Comprehensive Income (Loss) - Net Changes in Accumulated OCI by Component, Net of Tax (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 04, 2015	Jun. 28, 2014	Jul. 04, 2015	Jun. 28, 2014
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	$ (339.2)	$ (36.9)	$ (248.2)	$ (44.8)
Other comprehensive income (loss) before reclassifications	30.7	(3.2)	(65.6)	1.5
Amounts reclassified from Accumulated OCI	6.5	3.6	11.8	6.8
Net other comprehensive income (loss)	37.2	0.4	(53.8)	8.3
Ending balance	(302.0)	(36.5)	(302.0)	(36.5)
Foreign Currency Translation [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(104.0)	125.8	(7.7)	121.1
Other comprehensive income (loss) before reclassifications	30.7	(3.2)	(65.6)	1.5
Net other comprehensive income (loss)	30.7	(3.2)	(65.6)	1.5
Ending balance	(73.3)	122.6	(73.3)	122.6
Cash Flow Hedges [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	0.9	1.2	1.0	1.3
Amounts reclassified from Accumulated OCI	(0.1)	(0.1)	(0.2)	(0.2)
Net other comprehensive income (loss)	(0.1)	(0.1)	(0.2)	(0.2)
Ending balance	0.8	1.1	0.8	1.1
Defined Benefit Pension and Postretirement Plans [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(236.1)	(163.9)	(241.5)	(167.2)
Amounts reclassified from Accumulated OCI	6.6	3.7	12.0	7.0
Net other comprehensive income (loss)	6.6	3.7	12.0	7.0
Ending balance	$ (229.5)	$ (160.2)	$ (229.5)	$ (160.2)