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Restructuring Costs | 12 Months Ended
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Dec. 31, 2016
Restructuring and Related Activities [Abstract] |
Restructuring Costs | 12. Restructuring Costs The following table summarizes pre-tax restructuring charges, including employee severance and benefit costs and other charges, for the years ended December 31 (in millions):
|  | 2016 |  |  | 2015 |  |  | 2014 |
Solid Waste |  | $ | 4 |  |  | $ | 14 |  |  | $ | 10 |
Corporate and Other |  |  | — |  |  |  | 1 |  |  |  | 71 |
Wheelabrator |  |  | — |  |  |  | — |  |  |  | 1 |
|  | $ | 4 |  |  | $ | 15 |  |  | $ | 82 |
During the year ended December 31, 2016, we recognized $4 million of pre-tax restructuring charges, of which $2 million was related to employee severance and benefit costs. The remaining charges were primarily related to operating lease obligations for property that will no longer be utilized. During the year ended December 31, 2015, we recognized $15 million of pre-tax restructuring charges, of which $10 million was related to employee severance and benefit costs, including costs associated with the loss of a municipal contract in our Eastern Canada Area and our acquisition of Deffenbaugh. The remaining charges were primarily related to operating lease obligations for property that will no longer be utilized. In August 2014, we announced a consolidation and realignment of several Corporate functions to better support achievement of the Company’s strategic goals, including cost reduction. Voluntary separation arrangements were offered to all salaried employees within these organizations. Approximately 650 employees separated from our Corporate and recycling organizations in connection with this restructuring. During the year ended December 31, 2014, we recognized a total of $82 million of pre-tax restructuring charges, of which $70 million was related to employee severance and benefit costs. The remaining charges were primarily related to operating lease obligations for property that will no longer be utilized. As of December 31, 2016, substantially all of the accrued employee severance and benefits related to our restructuring efforts was paid.

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- Definition The entire disclosure for restructuring and related activities. Description of restructuring activities such as exit and disposal activities, include facts and circumstances leading to the plan, the expected plan completion date, the major types of costs associated with the plan activities, total expected costs, the accrual balance at the end of the period, and the periods over which the remaining accrual will be settled. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 5.P.4) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 5.P.3) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140864-122747 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 + Details
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