Retirement Plans - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 29, 2012	Dec. 31, 2011	Jan. 01, 2011
Schedule Of Other Postretirement Benefits [Line Items]
Cash surrender value of life insurance	$ 46.7	$ 38.2
Defined contribution plan cost recognized	2.9	2.5	2.1
Defined contribution plan at foreign subsidiary	0.9	0.9	0.9
Deferred recognized compensation liability	3.0	3.1
Accumulated benefit obligations for all defined benefit pension plans and the SERP	425.4	254.2
Prior service cost expected to be recognized in net periodic pension expense	0.1
Actuarial loss included in accumulated other comprehensive income (loss)	30.4
Expense for qualified defined benefit pension plans	20.2	12.6	11.9
Amortization of Unrecognized net actuarial losses exceeding certain corridors period	5 years
Company expects to contribute to qualified defined benefit pension plans	2.4
Contributions to SERP	$ 2.4
401K Plan [Member]
Schedule Of Other Postretirement Benefits [Line Items]
Number of defined contribution plans	2
Equity securities [Member]
Schedule Of Other Postretirement Benefits [Line Items]
Fixed income securities should not exceed	80.00%
Fixed income securities [Member]
Schedule Of Other Postretirement Benefits [Line Items]
Fixed income securities should not exceed	35.00%

Carrying amount as of the balance sheet date of amounts which could be received based on the terms of the insurance contract upon surrendering life policies owned by the entity.

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The employer's best estimate, as soon as it can be reasonably determined, of contributions expected to be paid to the plan during the next fiscal year beginning after the date of the latest statement of financial position. Estimated contributions may be presented in the aggregate combining (1) contributions required by funding regulations or laws, (2) discretionary contributions, and (3) noncash contributions.

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If aggregate disclosures are presented, the aggregate pension accumulated benefit obligation for pension plans with accumulated benefit obligations in excess of plan assets as of the measurement date of each statement of financial position presented.

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