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Income Taxes - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Apr. 04, 2015	Apr. 05, 2014	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Effective income tax rate	29.20%	37.50%
Charge related to tax legislation changes		$ 12.8
Current deferred tax assets	255.2us-gaap_DeferredTaxAssetsNetCurrent		253.4us-gaap_DeferredTaxAssetsNetCurrent
Current deferred tax Liabilities	10.9us-gaap_DeferredTaxLiabilitiesCurrent		13.1us-gaap_DeferredTaxLiabilitiesCurrent
Non-current deferred tax liabilities	$ 769.1		$ 779.3

Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards expected to be realized or consumed within one year or operating cycle, if longer.

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- Definition

Amount of deferred tax liability attributable to taxable temporary differences, net of deferred tax asset attributable to deductible temporary differences and carryforwards net of valuation allowances expected to be realized or consumed within one year or operating cycle, if longer.

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