Acquisitions - Summary of Fair Value of Assets Acquired and Liabilities Assumed (Detail) (USD $) In Thousands, unless otherwise specified	0 Months Ended	12 Months Ended
Jan. 17, 2014	Dec. 27, 2014	Dec. 28, 2013	Dec. 29, 2012	Jan. 17, 2014
Business Acquisition [Line Items]
Goodwill		$ 419,270us-gaap_Goodwill	$ 127,038us-gaap_Goodwill	$ 179,120us-gaap_Goodwill
Series of Individually Immaterial Business Acquisitions [Member]
Business Acquisition [Line Items]
Financial assets	15,489	22,101	8,302	1,397	15,489
Inventories	2,548	8,249	3,954	6,988	2,548
Property, plant and equipment	47,985	74,687	40,580	21,543	47,985
Intangible assets		3,398	7,428	3,172
Other assets	2,595	3,337	52	1,330	2,595
Financial liabilities	(10,054)	(17,610)	(6,164)	(944)	(10,054)
Other long-term liabilities	(990)	(11,727)	(1,050)	(364)	(990)
Net assets acquired	57,573	82,435	53,102	33,122	57,573
Goodwill	147,064	148,838	16,120	26,230	147,064
Purchase price	204,637	231,273	69,222	59,352	204,637
Acquisition related liabilities	(22,123)	(10,656)	(7,902)	(10,547)
Other	(2,087)	(3,190)	281	(48)
Net cash paid for acquisitions	$ 180,427	$ 217,427	$ 61,601	$ 48,757

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Amount of liabilities incurred by the acquirer as part of consideration transferred in a business combination.

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Amount of tangible or intangible assets, including a business or subsidiary of the acquirer transferred by the entity to the former owners of the acquiree. Excludes cash.

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The amount of financial assets (as defined) recognized as of the acquisition date.

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The amount of financial liabilities assumed (as defined) which have been recognized as of the acquisition date.

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Amount of intangible assets, excluding goodwill, acquired at the acquisition date.

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The amount of inventory recognized as of the acquisition date.

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Amount recognized as of the acquisition date for the identifiable assets acquired in excess of (less than) the aggregate liabilities assumed.

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Amount of other liabilities due after one year or the normal operating cycle, if longer, assumed at the acquisition date.

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Amount of other assets expected to be realized or consumed after one year or the normal operating cycle, if longer, acquired at the acquisition date.

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The amount of property, plant, and equipment recognized as of the acquisition date.

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Amount recognized for assets, including goodwill, in excess of (less than) the aggregate liabilities assumed.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

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