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Asset Impairments and Unusual Items	3 Months Ended
	Mar. 31, 2016
Extraordinary and Unusual Items [Abstract]
Asset Impairments and Unusual Items	10. Asset Impairments and Unusual Items (Income) expense from divestitures, assets impairments and unusual items In the first quarter of 2015 we recognized net charges of $13 million, including $7 million of post-closing adjustments associated with the sale of our Wheelabrator business in December 2014. In addition, we recognized a $5 million impairment charge related to a landfill in our Western Canada Area.

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- Definition

The entire disclosure for any additional information related to the determination or classification of material events or transactions (that would not reasonably be expected to recur in the foreseeable future) that possesses a high degree of abnormality and are incidentally related to, the ordinary and typical activities of the entity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 20
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6365513&loc=d3e15138-107781

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