Accumulated Other Comprehensive Income (Loss) - Reclassifications Out of Accumulated OCI (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Apr. 01, 2017
Gains on cash flow hedges:
Interest expense	$ 13.6	$ 12.7
Income tax expense	57.6	62.6
Amortization of net unrecognized losses and prior service credits
Amounts reclassified from Accumulated OCI, Net of tax	(5.3)	(3.9)
Cash Flow Hedges | Reclassification out of AOCI
Gains on cash flow hedges:
Income tax expense	0.0	0.0
Net of tax	0.5	0.3
Amortization of net unrecognized losses and prior service credits
Amortization of net unrecognized losses and prior service credits
Amortization of net unrecognized losses and prior service credits	(7.6)	(6.5)
Defined Benefit Pension and Postretirement Plans
Amortization of net unrecognized losses and prior service credits
Income tax benefit	1.8	2.3
Amounts reclassified from Accumulated OCI, Net of tax	(5.8)	(4.2)
Treasury locks | Cash Flow Hedges | Reclassification out of AOCI
Gains on cash flow hedges:
Interest expense	$ 0.5	$ 0.3