Organization, Business and Summary of Significant Accounting Policies (Narrative) (Detail) (USD $) In Thousands, unless otherwise specified	1 Months Ended	12 Months Ended
	Oct. 31, 2012 segment	Dec. 31, 2013 segment site agreement	Dec. 31, 2012	Dec. 31, 2011
Organization And Summary Of Significant Accounting Policies [Line Items]
Number of life-of-site landfills for which the Company is responsible for final capping, closure and post-closure maintenance obligations		5
Number of life-of-site landfills		6
Discount rate for purposes of computing layers for final capping, closure and post-closure obligations		5.75%	5.75%
Inflation rate for purposes of computing layers for final capping, closure and post-closure obligations		2.50%	2.50%
Life of Company's owned landfills and landfills operated under life of site operating agreements min range		5 years
Life of Company's owned landfills and landfills operated under life of site operating agreements max range		200 years
Average remaining landfill life based on permitted capacity, projected annual disposal volumes and probable expansion capacity		42 years
Restricted asset balance for purposes of securing our performance of future final capping, closure and post-closure obligations		$ 33,466
Cell processing reserve, current		7,013	6,442
Cell processing reserve, noncurrent		2,416	2,043
Perpetual revenue growth rate		3.20%
Weighted average cost of capital		5.40%
Number of geographic operating segments		3
Number of operating segments	3	4
Impairment		0
Goodwill write-down		0	0
Forecasts period used for discounted cash flow analyses		10 years
Indefinite-lived intangible asset write-down		0	0
Number of interest rate swap agreements		3
Number of fuel hedge agreements		1
Contractual life of warrants		5 years
Equity-based compensation expense		15,397	17,289	11,879
Equity-based compensation expense, net of taxes		9,508	11,803	7,365
Unrecognized compensation cost related to unvested restricted stock unit awards		25,138
Restriced stock unit awards, vesting final year		2017
Weighted average remaining vesting period		1 year 1 month 6 days
Advertising costs		3,704	3,737	3,679
Accrual for self insured liabilities		42,732	43,935
Minimum [Member]
Organization And Summary Of Significant Accounting Policies [Line Items]
Expected term of related agreements		1 year
Maximum [Member]
Organization And Summary Of Significant Accounting Policies [Line Items]
Expected term of related agreements		56 years
Fuel [Member] | Commodity Contract [Member]
Organization And Summary Of Significant Accounting Policies [Line Items]
Ineffectiveness recognized on hedge		$ 0	$ 0	$ 0