Components of Deferred Taxes (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Schedule of Components of Deferred Tax Provision [Line Items]
Self-insurance reserves	$ 87,483	$ 112,587
Compensation accruals	49,302	47,571
State and foreign net operating loss carryforwards and other state and foreign deferred tax assets	57,204	54,874
Other currently non-deductible accrued liabilities	24,587	29,934
Net pension liability-OCI only	6,390	12,061
Doubtful accounts and other reserves	33,905	17,562
Other combined items-OCI only	9,018	15,282
Deferred income tax assets, Gross	267,889	289,871
Less: Valuation Allowance	(46,841)	(44,511)
Net deferred income tax assets:	221,048	245,360
Depreciable and amortizable assets	(337,669)	(322,317)
Other deferred tax liabilities	(2,624)	(2,329)
Net deferred income tax liabilities	$ (119,245)	$ (79,286)