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Accumulated Other Comprehensive Income (Loss) - Reclassifications Out of Accumulated OCI (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 30, 2017	Dec. 31, 2016	Jan. 02, 2016
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Amortization of net unrecognized losses and prior service credits	$ (26.6)	$ (30.1)	$ (38.0)
Interest expense	52.4	52.2	51.9
Income tax expense	250.9	244.3	$ 221.2
Amounts reclassified from Accumulated OCI, Net of tax	(15.6)	(18.7)
Reclassification out of AOCI [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Amounts reclassified from Accumulated OCI, Net of tax	(15.6)	(18.7)
Cash Flow Hedges [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Amounts reclassified from Accumulated OCI, Net of tax	1.6	0.3
Cash Flow Hedges [Member] | Reclassification out of AOCI [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Amounts reclassified from Accumulated OCI, Net of tax	1.6	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	(17.2)	(19.0)
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	(26.6)	(30.1)
Income tax expense	9.4	11.1
Amounts reclassified from Accumulated OCI, Net of tax	(17.2)	(19.0)
Treasury Locks [Member] | Cash Flow Hedges [Member] | Reclassification out of AOCI [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest expense	$ 1.6	$ 0.3

X

- Definition

Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

+ References

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Amount of the cost of borrowed funds accounted for as interest expense.

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Amount, before tax, of reclassification adjustment from accumulated other comprehensive income (loss) for gain (loss) of defined benefit plan.

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