Commitments and Contingencies - Additional Information (Detail) $ in Millions	9 Months Ended	12 Months Ended
	Oct. 03, 2015 USD ($) sites	Dec. 28, 2013 USD ($)	Jan. 03, 2015 USD ($)
Loss Contingencies [Line Items]
Superfund Sites | sites	31
Environmental remediation. Period construction of treatment facility to be maintained	30 years
Centredale Site [Member]
Loss Contingencies [Line Items]
Environmental remediation costs, reserve	$ 68.1
Centredale Site [Member] | Minimum [Member]
Loss Contingencies [Line Items]
Environmental remediation costs deemed probable and reasonably estimable		$ 68.1
Centredale Site [Member] | Maximum [Member]
Loss Contingencies [Line Items]
Environmental remediation costs deemed probable and reasonably estimable		$ 139.7
Property, Plant and Equipment, Other Types
Loss Contingencies [Line Items]
Environmental remediation costs, reserve	176.2		$ 177.3
Reserve for environmental remediation costs, current	16.3
Reserve for environmental remediation costs, noncurrent	159.9
Accrual for Environmental Loss Contingencies, EPA Funded Amount	21.9
Accrual for Environmental Loss Contingencies, Obligation After EPA Funding	154.3
Property, Plant and Equipment, Other Types | Minimum [Member]
Loss Contingencies [Line Items]
Environmental remediation costs deemed probable and reasonably estimable	135.9
Property, Plant and Equipment, Other Types | Maximum [Member]
Loss Contingencies [Line Items]
Environmental remediation costs deemed probable and reasonably estimable	267.1
Passaic River [Member] [Domain]
Loss Contingencies [Line Items]
Environmental remediation costs deemed probable and reasonably estimable	$ 1,700.0
Environmental remediation. Period construction of treatment facility to be maintained	5 years