Accumulated Other Comprehensive Income (Loss) - Reclassifications Out of Accumulated OCI (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 27, 2014	Sep. 28, 2013	Sep. 27, 2014	Sep. 28, 2013
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Amortization of net unrecognized losses and prior service credits included in net periodic pension cost	$ (5.6)	$ (10.2)	$ (16.6)	$ (30.5)
Interest expense	12.7	14.4	39.1	41.8
Income tax expense	48.4	40.8	144.6	122.1
Amounts reclassified from Accumulated OCI, Net of tax	(3.4)	(5.5)	(10.2)	(18.0)
Reclassification out of AOCI [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Amounts reclassified from Accumulated OCI, Net of tax	(3.4)	(5.5)	(10.2)	(18.0)
Cash Flow Hedges [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Amounts reclassified from Accumulated OCI, Net of tax	0.1	0.1	0.3	0.3
Cash Flow Hedges [Member] | Reclassification out of AOCI [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income tax expense
Amounts reclassified from Accumulated OCI, Net of tax	0.1	0.1	0.3	0.3
Defined Benefit Pension and Postretirement Plans [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Amounts reclassified from Accumulated OCI, Net of tax	(3.5)	(5.6)	(10.5)	(18.3)
Defined Benefit Pension and Postretirement Plans [Member] | Reclassification out of AOCI [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Amortization of net unrecognized losses and prior service credits included in net periodic pension cost	(5.6)	(10.2)	(16.6)	(30.5)
Income tax expense	2.1	4.6	6.1	12.2
Amounts reclassified from Accumulated OCI, Net of tax	(3.5)	(5.6)	(10.5)	(18.3)
Treasury Locks [Member] | Cash Flow Hedges [Member] | Reclassification out of AOCI [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest expense	$ 0.1	$ 0.1	$ 0.3	$ 0.3