Accumulated Other Comprehensive Income (Loss) - Net Changes in Accumulated OCI by Component, Net of Tax (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Apr. 01, 2017
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	$ 2,972.3	$ 2,635.2
Other comprehensive income (loss) before reclassifications	38.3	44.2
Amounts reclassified from Accumulated OCI	5.3	3.9
Net other comprehensive income (loss)	43.6	48.1
Ending balance	3,102.3	2,765.8
Foreign Currency Translation
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(82.5)	(217.7)
Other comprehensive income (loss) before reclassifications	39.1	38.1
Amounts reclassified from Accumulated OCI	0.0	0.0
Net other comprehensive income (loss)	39.1	38.1
Ending balance	(43.4)	(179.6)
Cash Flow Hedges
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	14.5	9.2
Other comprehensive income (loss) before reclassifications	(0.8)	6.1
Amounts reclassified from Accumulated OCI	(0.5)	(0.3)
Net other comprehensive income (loss)	(1.3)	5.8
Ending balance	13.2	15.0
Defined Benefit Pension and Postretirement Plans
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(261.0)	(290.0)
Other comprehensive income (loss) before reclassifications	0.0	0.0
Amounts reclassified from Accumulated OCI	5.8	4.2
Net other comprehensive income (loss)	5.8	4.2
Ending balance	(255.2)	(285.8)
Accumulated Other Comprehensive Income (Loss)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(329.0)	(498.5)
Net other comprehensive income (loss)	43.6	48.1
Ending balance	$ (285.4)	$ (450.4)