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OTHER LONG-TERM LIABILITIES (Details) - CAD CAD in Millions | Dec. 31, 2015 | Dec. 31, 2014
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OTHER LONG-TERM LIABILITIES. |  |
Regulatory liabilities (Note 5) | CAD 787 | CAD 802
Derivative liabilities (Note 24) | 3,950 | 2,078
Pension and OPEB liabilities (Note 26) | 517 | 584
Asset retirement obligations (Note 19) | 189 | 132
Environmental liabilities | 89 | 70
Other | 524 | 375
Liabilities, Other than Long-term Debt, Noncurrent, Total | CAD 6,056 | CAD 4,041

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- Definition Total costs accrued as of the balance sheet date for environmental loss contingencies. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14326-108349 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 30 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=6393242&loc=d3e13207-110859 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 25 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6395460&loc=d3e13647-108346 + Details
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