Valuation and Qualifying Accounts (Detail) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2016	Dec. 26, 2015	Dec. 27, 2014
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Year	$ 350,339	$ 364,366	$ 356,041
Additions Charged to Income	343,350	301,597	325,766
Deductions From Reserves	338,010	315,624	317,441
Balance at End of Year	355,679	350,339	364,366
Self-Insurance Reserves, Current
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Year	135,865	151,153	150,860
Additions Charged to Income	341,699	300,336	317,734
Deductions From Reserves	338,010	315,624	317,441
Balance at End of Year	139,554	135,865	151,153
Self-Insurance Reserves, Noncurrent
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Year	214,474	213,213	205,181
Additions Charged to Income	1,651	1,261	8,032
Deductions From Reserves	0	0	0
Balance at End of Year	$ 216,125	$ 214,474	$ 213,213

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

No definition available.

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- Definition

Total of allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 4
-Subparagraph (SX 210.12-09)
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690

+ Details

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- Definition

Amount of increase in the allowances and reserves, which consist of the valuation and qualifying accounts that are either netted against the cost of an asset or that reflect a liability established to represent expected future costs, from charges to costs and expenses.

+ References

+ Details

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- Definition

Total of the deductions in a given period to allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs, representing receivables written off as uncollectible and portions of the reserves utilized, respectively.

+ References

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