Income Taxes (Narrative) (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 29, 2012	Dec. 31, 2011	Jan. 01, 2011	Jan. 02, 2010
Income Tax [Line Items]
Net operating loss carryforwards	$ 313.2
Valuation allowance	43.9	40.4	40.1
Unrecognized tax benefits	6.8	11.0	11.1	17.5
Effective income tax rate	4.1	9.1	11.1
Interest and penalties related to unrecognized tax benefits	0.5	1.4
Accrued interest and penalties related to unrecognized tax benefits	1.6	1.6	2.8
Increase in unrecognized tax benefits	1.2	2.8	3.1
Undistributed earnings	492.2	416.4	386.5
Minimum [Member]
Income Tax [Line Items]
Decrease in unrecognized tax benefits	0
Increase in unrecognized tax benefits	0
Maximum [Member]
Income Tax [Line Items]
Decrease in unrecognized tax benefits	2.4
Increase in unrecognized tax benefits	$ 1.6

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards.

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Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

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The earnings that is allocated to common stock and participating securities to the extent that each security may share in earnings as if all of the earnings for the period had been distributed.

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The gross amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns as of the balance sheet date.

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The gross amount of decreases in unrecognized tax benefits resulting from tax positions that have been or will be taken in the tax return for the current period, excluding amounts pertaining to examined tax returns.

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This element represents the total of accruals as of the date of the statement of financial position for interest recognized for an underpayment of income taxes computed by applying the applicable statutory rate of interest to the difference between a tax position recognized for financial reporting purposes and the amount previously taken or expected to be taken in a tax return of the entity and the amount of statutory penalties for a tax position claimed or expected to be claimed by the entity, in its tax return, that does not meet the minimum statutory threshold to avoid payment of penalties.

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This element represents the total of interest expense recognized for an underpayment of income taxes computed by applying the applicable statutory rate of interest to the difference between a tax position recognized for financial reporting purposes and the amount previously taken or expected to be taken in a tax return of the entity and the amount of statutory penalties in the period in which the entity claims or expects to claim a tax position, in its tax return, that does not meet the minimum statutory threshold to avoid payment of penalties.

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The gross amount of increases in unrecognized tax benefits resulting from tax positions that have been or will be taken in the tax return for the current period, excluding amounts pertaining to examined tax returns.

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The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate.

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