Number of Business For Which Selected Assets Acquired

No definition available.

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- Definition

Percentage of voting equity interests acquired in the business combination.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141R

-Paragraph 68

-Subparagraph c

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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- Definition

The amount of acquisition cost of a business combination allocated to an identifiable intangible asset that will be amortized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141

-Paragraph 51

-Subparagraph e

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141

-Paragraph 52

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

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Period Type:	instant

- Definition

Amount of goodwill arising from a business combination, which is the excess of the cost of the acquired entity over the amounts assigned to assets acquired and liabilities assumed.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141

-Paragraph 52

-Subparagraph c

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141

-Paragraph 53

-Subparagraph d

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

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- Definition

The amount of goodwill arising from a business combination that is expected to be deductible for tax purposes.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141

-Paragraph 53

-Subparagraph d

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 30

-Section 50

-Paragraph 1

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141

-Paragraph 52

-Subparagraph c

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141R

-Paragraph 68

-Subparagraph k

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

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- Definition

The amount of acquisition cost of a business combination allocated to an identifiable intangible asset that will not be amortized. Does not include goodwill.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141

-Paragraph 51

-Subparagraph e

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141

-Paragraph 52

-Subparagraph b

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

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- Definition

Amount of acquisition cost of a business combination allocated to assets, excluding financial assets and goodwill, lacking physical substance.

+ References

No definition available.

+ Details

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- Definition

This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 10

-Section 25

-Paragraph 23

-URI http://asc.fasb.org/extlink&oid=21917927&loc=d3e1043-128460

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141R

-Paragraph 59

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

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Period Type:	duration

- Definition

Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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- Definition

Change in the carrying value of goodwill. The change could be the result of new goodwill acquired, goodwill impairment, if any, goodwill written off related to the sale of a business or other adjustments to goodwill.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=14024403&loc=d3e13816-109267

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 142

-Paragraph 45

-Subparagraph e

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141R

-Paragraph 72

-Subparagraph d

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

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- Definition

The number of businesses acquired by the entity during the period.

+ References

No definition available.

+ Details

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- Details

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ACQUISITIONS AND DIVESTITURES - Additional Information (Detail) (USD $)	3 Months Ended
	Mar. 31, 2013 Entity	Mar. 31, 2012
Significant Acquisitions and Disposals [Line Items]
Number of acquisitions completed	12
Increase in goodwill from acquisitions	$ 18,434,000
Tax deductible goodwill amount	5,300,000
Increase in intangibles from acquisitions	11,117,000
Indefinite lived intangible assets acquired, permits	800,000
Acquisition related expenses	1,800,000	1,500,000
Canada
Significant Acquisitions and Disposals [Line Items]
Number of acquisitions completed	1
Chile
Significant Acquisitions and Disposals [Line Items]
Number of acquisitions completed	1
Portugal
Significant Acquisitions and Disposals [Line Items]
Number of acquisitions completed	1
Romania
Significant Acquisitions and Disposals [Line Items]
Number of acquisitions completed	1
United Kingdom
Significant Acquisitions and Disposals [Line Items]
Number of acquisitions completed	4
Japan
Significant Acquisitions and Disposals [Line Items]
Number of acquisitions completed	2
Spain
Significant Acquisitions and Disposals [Line Items]
Number of acquisitions completed	1
United States
Significant Acquisitions and Disposals [Line Items]
Number of acquisitions completed	1
Goodwill period increase decrease	1,200,000
International
Significant Acquisitions and Disposals [Line Items]
Goodwill period increase decrease	17,200,000
Customer relationships
Significant Acquisitions and Disposals [Line Items]
Intangibles assets acquired, amortizable	$ 10,300,000
Finite-Lived Intangible Asset, Useful Life	26 years 2 months 12 days
Customer relationships \| Minimum
Significant Acquisitions and Disposals [Line Items]
Finite-Lived Intangible Asset, Useful Life	14 years
Customer relationships \| Maximum
Significant Acquisitions and Disposals [Line Items]
Finite-Lived Intangible Asset, Useful Life	40 years
Regulated waste management services
Significant Acquisitions and Disposals [Line Items]
Number of acquisitions completed	12
Regulated waste management services \| Canada
Significant Acquisitions and Disposals [Line Items]
Number of acquisitions completed	1
Business acquisition, ownership percentage acquired	100.00%
Regulated waste management services \| Chile
Significant Acquisitions and Disposals [Line Items]
Number of acquisitions completed	1
Business acquisition, ownership percentage acquired	100.00%
Regulated waste management services \| Portugal
Significant Acquisitions and Disposals [Line Items]
Number of acquisitions completed	1
Business acquisition, ownership percentage acquired	100.00%
Regulated waste management services \| Romania
Significant Acquisitions and Disposals [Line Items]
Number of acquisitions completed	1
Business acquisition, ownership percentage acquired	100.00%
Regulated waste management services \| United Kingdom
Significant Acquisitions and Disposals [Line Items]
Number of acquisitions completed	3
Number of businesses for which selected assets were acquired	1,000
Business acquisition, ownership percentage acquired	100.00%
Regulated waste management services \| Japan
Significant Acquisitions and Disposals [Line Items]
Number of businesses for which selected assets were acquired	2
Regulated waste management services \| Spain
Significant Acquisitions and Disposals [Line Items]
Number of businesses for which selected assets were acquired	1
2013 Acquisitions \| Customer relationships \| Minimum
Significant Acquisitions and Disposals [Line Items]
Finite-Lived Intangible Asset, Useful Life	15 years
2013 Acquisitions \| Customer relationships \| Maximum
Significant Acquisitions and Disposals [Line Items]
Finite-Lived Intangible Asset, Useful Life	40 years