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Acquisitions, Investments and Dispositions - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	1 Months Ended	12 Months Ended
	Apr. 30, 2012 business	Dec. 30, 2012	Dec. 25, 2011	Dec. 26, 2010
Business Acquisition [Line Items]
Number of businesses acquired	2
Payments for acquisitions, net of cash acquired		$ 67,244	$ 23,020	$ 15,164
Payments for investments		2,501	19,406	10,984
Gain on sale of discontinued operations, net of tax		$ 0	$ 0	$ 21,195

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Amount of gain (loss), after tax expense or benefit and not previously recognized, resulting from the sale of a business component.

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The number of businesses acquired by the entity during the period.

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The cash outflow associated with the acquisition of a business, net of the cash acquired from the purchase.

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The cash outflow associated with the purchase of all investments (debt, security, other) during the period.

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