Valuation and Qualifying Accounts (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 28, 2013	Dec. 29, 2012	Dec. 31, 2011
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Year	$ 351,726	$ 345,229	$ 335,470
Additions Charged to Income	332,922	306,788	296,798
Deductions From Reserves	328,607	300,291	287,039
Balance at End of Year	356,041	351,726	345,229
Self-Insurance Reserves, Current
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Year	138,998	125,569	114,133
Additions Charged to Income	332,922	306,788	296,798
Deductions From Reserves	321,060	293,359	285,362
Balance at End of Year	150,860	138,998	125,569
Self-Insurance Reserves, Noncurrent
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Year	212,728	219,660	221,337
Additions Charged to Income	0	0	0
Deductions From Reserves	7,547	6,932	1,677
Balance at End of Year	$ 205,181	$ 212,728	$ 219,660