Schedule of Accrued Expenses and Other Current Liabilities (Detail) (USD $) In Millions, unless otherwise specified	Dec. 28, 2014	Dec. 29, 2013
Other Liabilities [Line Items]
Payroll and employee related accruals	$ 64.0	$ 55.4
Accrued interest	0.3us-gaap_InterestPayableCurrent	0.3us-gaap_InterestPayableCurrent
Taxes payable	9.0us-gaap_TaxesPayableCurrent	9.9us-gaap_TaxesPayableCurrent
Restructuring	30.2us-gaap_RestructuringReserveCurrent	4.2us-gaap_RestructuringReserveCurrent
Other	26.1us-gaap_OtherLiabilitiesCurrent	18.2us-gaap_OtherLiabilitiesCurrent
Total accrued expenses and other current liabilities	$ 129.6us-gaap_AccruedLiabilitiesCurrent	$ 88.0us-gaap_AccruedLiabilitiesCurrent

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Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Total of the carrying values as of the balance sheet date of obligations incurred through that date and payable for obligations related to services received from employees, such as accrued salaries and bonuses, payroll taxes and fringe benefits. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Carrying value as of the balance sheet date of [accrued] interest payable on all forms of debt, including trade payables, that has been incurred and is unpaid. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Aggregate carrying amount of current liabilities (due within one year or within the normal operating cycle if longer) not separately disclosed in the balance sheet. Includes costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered and of liabilities not separately disclosed.

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Carrying amount as of the balance sheet date of known and estimated obligations associated with exit from or disposal of business activities or restructurings pursuant to a duly authorized plan, which are expected to be paid in the next twelve months or in the normal operating cycle if longer. Costs of such activities include those for one-time termination benefits, termination of an operating lease or other contract, consolidating or closing facilities, relocating employees, and costs associated with an ongoing benefit arrangement, but excludes costs associated with the retirement of a long-lived asset.

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Carrying value as of the balance sheet date of obligations incurred and payable for statutory income, sales, use, payroll, excise, real, property and other taxes. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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