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RISK MANAGEMENT AND FINANCIAL INSTRUMENTS - TOTAL DERIVATIVE INSTRUMENTS (Details) - CAD CAD in Millions | Dec. 31, 2015 | Dec. 31, 2014
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TOTAL DERIVATIVE INSTRUMENTS |  |
Total Gross Derivative Instruments | CAD (4,731) | CAD (2,331)
Derivative liabilities, Amounts Available for Offset | (17) | (33)
Total current derivative assets | 791 | 568
Total long-term derivative assets | 373 | 199
Total current derivative liabilities | (1,945) | (1,020)
Total long-term derivative liabilities | (3,950) | (2,078)
Total net financial asset/(liability) | (4,748) | (2,364)
Non-Qualifying Derivative Instruments |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Total net financial asset/(liability) | (3,738) | (1,319)
Cash Flow Hedges. | Designated as hedging instrument |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Total net financial asset/(liability) | (641) | (908)
Net Investment Hedges | Designated as hedging instrument |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Total net financial asset/(liability) | (352) | (104)
Accounts receivable and other |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Current derivative assets, Total Gross Derivative Instruments | 791 | 568
Current derivative assets, Amounts Available for Offset | (216) | (150)
Total current derivative assets | 575 | 418
Accounts receivable and other | Non-Qualifying Derivative Instruments |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Current derivative assets, Total Gross Derivative Instruments | 774 | 512
Accounts receivable and other | Cash Flow Hedges. | Designated as hedging instrument |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Current derivative assets, Total Gross Derivative Instruments | 15 | 49
Accounts receivable and other | Net Investment Hedges | Designated as hedging instrument |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Current derivative assets, Total Gross Derivative Instruments | 2 | 7
Deferred amounts and other assets |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Long-term derivative assets, Total Gross Derivative Instruments | 373 | 199
Long-term derivative assets, Amounts Available for Offset | (218) | (99)
Total long-term derivative assets | 155 | 100
Deferred amounts and other assets | Non-Qualifying Derivative Instruments |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Long-term derivative assets, Total Gross Derivative Instruments | 230 | 121
Deferred amounts and other assets | Cash Flow Hedges. | Designated as hedging instrument |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Long-term derivative assets, Total Gross Derivative Instruments | 139 | 60
Deferred amounts and other assets | Net Investment Hedges | Designated as hedging instrument |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Long-term derivative assets, Total Gross Derivative Instruments | 4 | 18
Accounts payable and other |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Current derivative liabilities, Total Gross Derivative Instruments | (1,945) | (1,020)
Current derivative liabilities, Amounts Available for Offset | 199 | 117
Total current derivative liabilities | (1,746) | (903)
Accounts payable and other | Non-Qualifying Derivative Instruments |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Current derivative liabilities, Total Gross Derivative Instruments | (1,457) | (499)
Accounts payable and other | Cash Flow Hedges. | Designated as hedging instrument |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Current derivative liabilities, Total Gross Derivative Instruments | (382) | (441)
Accounts payable and other | Net Investment Hedges | Designated as hedging instrument |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Current derivative liabilities, Total Gross Derivative Instruments | (106) | (80)
Other long-term liabilities |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Long-term derivative liabilities, Total Gross Derivative Instruments | (3,950) | (2,078)
Long-term derivative liabilities, Amounts Available for Offset | 218 | 99
Total long-term derivative liabilities | (3,732) | (1,979)
Other long-term liabilities | Non-Qualifying Derivative Instruments |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Long-term derivative liabilities, Total Gross Derivative Instruments | (3,285) | (1,453)
Other long-term liabilities | Cash Flow Hedges. | Designated as hedging instrument |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Long-term derivative liabilities, Total Gross Derivative Instruments | (413) | (576)
Other long-term liabilities | Net Investment Hedges | Designated as hedging instrument |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Long-term derivative liabilities, Total Gross Derivative Instruments | (252) | (49)
Foreign Exchange Risk |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Total net financial asset/(liability) | (3,782) | (1,433)
Foreign Exchange Risk | Non-Qualifying Derivative Instruments |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Total net financial asset/(liability) | (3,549) | (1,362)
Foreign Exchange Risk | Cash Flow Hedges. | Designated as hedging instrument |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Total net financial asset/(liability) | 119 | 33
Foreign Exchange Risk | Net Investment Hedges | Designated as hedging instrument |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Total net financial asset/(liability) | (352) | (104)
Foreign Exchange Risk | Accounts receivable and other |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Current derivative assets, Total Gross Derivative Instruments | 10 | 13
Current derivative assets, Amounts Available for Offset | (3) | (13)
Total current derivative assets | 7 |
Foreign Exchange Risk | Accounts receivable and other | Non-Qualifying Derivative Instruments |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Current derivative assets, Total Gross Derivative Instruments | 2 | 3
Foreign Exchange Risk | Accounts receivable and other | Cash Flow Hedges. | Designated as hedging instrument |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Current derivative assets, Total Gross Derivative Instruments | 6 | 3
Foreign Exchange Risk | Accounts receivable and other | Net Investment Hedges | Designated as hedging instrument |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Current derivative assets, Total Gross Derivative Instruments | 2 | 7
Foreign Exchange Risk | Deferred amounts and other assets |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Long-term derivative assets, Total Gross Derivative Instruments | 128 | 51
Long-term derivative assets, Amounts Available for Offset | (127) | (51)
Total long-term derivative assets | 1 |
Foreign Exchange Risk | Deferred amounts and other assets | Non-Qualifying Derivative Instruments |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Long-term derivative assets, Total Gross Derivative Instruments | 10 |
Foreign Exchange Risk | Deferred amounts and other assets | Cash Flow Hedges. | Designated as hedging instrument |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Long-term derivative assets, Total Gross Derivative Instruments | 114 | 33
Foreign Exchange Risk | Deferred amounts and other assets | Net Investment Hedges | Designated as hedging instrument |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Long-term derivative assets, Total Gross Derivative Instruments | 4 | 18
Foreign Exchange Risk | Accounts payable and other |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Current derivative liabilities, Total Gross Derivative Instruments | (872) | (301)
Current derivative liabilities, Amounts Available for Offset | 3 | 13
Total current derivative liabilities | (869) | (288)
Foreign Exchange Risk | Accounts payable and other | Non-Qualifying Derivative Instruments |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Current derivative liabilities, Total Gross Derivative Instruments | (765) | (218)
Foreign Exchange Risk | Accounts payable and other | Cash Flow Hedges. | Designated as hedging instrument |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Current derivative liabilities, Total Gross Derivative Instruments | (1) | (3)
Foreign Exchange Risk | Accounts payable and other | Net Investment Hedges | Designated as hedging instrument |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Current derivative liabilities, Total Gross Derivative Instruments | (106) | (80)
Foreign Exchange Risk | Other long-term liabilities |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Long-term derivative liabilities, Total Gross Derivative Instruments | (3,048) | (1,196)
Long-term derivative liabilities, Amounts Available for Offset | 127 | 51
Total long-term derivative liabilities | (2,921) | (1,145)
Foreign Exchange Risk | Other long-term liabilities | Non-Qualifying Derivative Instruments |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Long-term derivative liabilities, Total Gross Derivative Instruments | (2,796) | (1,147)
Foreign Exchange Risk | Other long-term liabilities | Net Investment Hedges | Designated as hedging instrument |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Long-term derivative liabilities, Total Gross Derivative Instruments | (252) | (49)
Interest rate contracts |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Total net financial asset/(liability) | (1,173) | (1,001)
Interest rate contracts | Non-Qualifying Derivative Instruments |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Total net financial asset/(liability) | (409) |
Interest rate contracts | Cash Flow Hedges. | Designated as hedging instrument |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Total net financial asset/(liability) | (764) | (1,001)
Interest rate contracts | Accounts receivable and other |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Current derivative assets, Total Gross Derivative Instruments | 2 | 8
Current derivative assets, Amounts Available for Offset | (2) | (7)
Total current derivative assets |  | 1
Interest rate contracts | Accounts receivable and other | Cash Flow Hedges. | Designated as hedging instrument |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Current derivative assets, Total Gross Derivative Instruments | 2 | 8
Interest rate contracts | Deferred amounts and other assets |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Long-term derivative assets, Total Gross Derivative Instruments | 18 | 5
Long-term derivative assets, Amounts Available for Offset | (14) | (5)
Total long-term derivative assets | 4 |
Interest rate contracts | Deferred amounts and other assets | Cash Flow Hedges. | Designated as hedging instrument |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Long-term derivative assets, Total Gross Derivative Instruments | 18 | 5
Interest rate contracts | Accounts payable and other |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Current derivative liabilities, Total Gross Derivative Instruments | (564) | (438)
Current derivative liabilities, Amounts Available for Offset | 2 | 7
Total current derivative liabilities | (562) | (431)
Interest rate contracts | Accounts payable and other | Non-Qualifying Derivative Instruments |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Current derivative liabilities, Total Gross Derivative Instruments | (185) |
Interest rate contracts | Accounts payable and other | Cash Flow Hedges. | Designated as hedging instrument |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Current derivative liabilities, Total Gross Derivative Instruments | (379) | (438)
Interest rate contracts | Other long-term liabilities |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Long-term derivative liabilities, Total Gross Derivative Instruments | (629) | (576)
Long-term derivative liabilities, Amounts Available for Offset | 14 | 5
Total long-term derivative liabilities | (615) | (571)
Interest rate contracts | Other long-term liabilities | Non-Qualifying Derivative Instruments |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Long-term derivative liabilities, Total Gross Derivative Instruments | (224) |
Interest rate contracts | Other long-term liabilities | Cash Flow Hedges. | Designated as hedging instrument |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Long-term derivative liabilities, Total Gross Derivative Instruments | (405) | (576)
Commodity contracts |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Total Gross Derivative Instruments | 245 | 83
Derivative liabilities, Amounts Available for Offset | (17) | (33)
Total net financial asset/(liability) | 228 | 50
Commodity contracts | Non-Qualifying Derivative Instruments |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Total net financial asset/(liability) | 231 | 32
Commodity contracts | Cash Flow Hedges. | Designated as hedging instrument |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Total net financial asset/(liability) | 14 | 51
Commodity contracts | Accounts receivable and other |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Current derivative assets, Total Gross Derivative Instruments | 779 | 535
Current derivative assets, Amounts Available for Offset | (211) | (130)
Total current derivative assets | 568 | 405
Commodity contracts | Accounts receivable and other | Non-Qualifying Derivative Instruments |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Current derivative assets, Total Gross Derivative Instruments | 772 | 501
Commodity contracts | Accounts receivable and other | Cash Flow Hedges. | Designated as hedging instrument |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Current derivative assets, Total Gross Derivative Instruments | 7 | 34
Commodity contracts | Deferred amounts and other assets |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Long-term derivative assets, Total Gross Derivative Instruments | 227 | 135
Long-term derivative assets, Amounts Available for Offset | (77) | (43)
Total long-term derivative assets | 150 | 92
Commodity contracts | Deferred amounts and other assets | Non-Qualifying Derivative Instruments |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Long-term derivative assets, Total Gross Derivative Instruments | 220 | 118
Commodity contracts | Deferred amounts and other assets | Cash Flow Hedges. | Designated as hedging instrument |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Long-term derivative assets, Total Gross Derivative Instruments | 7 | 17
Commodity contracts | Accounts payable and other |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Current derivative liabilities, Total Gross Derivative Instruments | (501) | (281)
Current derivative liabilities, Amounts Available for Offset | 194 | 97
Total current derivative liabilities | (307) | (184)
Commodity contracts | Accounts payable and other | Non-Qualifying Derivative Instruments |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Current derivative liabilities, Total Gross Derivative Instruments | (501) | (281)
Commodity contracts | Other long-term liabilities |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Long-term derivative liabilities, Total Gross Derivative Instruments | (260) | (306)
Long-term derivative liabilities, Amounts Available for Offset | 77 | 43
Total long-term derivative liabilities | (183) | (263)
Commodity contracts | Other long-term liabilities | Non-Qualifying Derivative Instruments |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Long-term derivative liabilities, Total Gross Derivative Instruments | (260) | (306)
Other contracts |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Total net financial asset/(liability) | (21) | 20
Other contracts | Non-Qualifying Derivative Instruments |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Total net financial asset/(liability) | (11) | 11
Other contracts | Cash Flow Hedges. | Designated as hedging instrument |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Total net financial asset/(liability) | (10) | 9
Other contracts | Accounts receivable and other |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Current derivative assets, Total Gross Derivative Instruments |  | 12
Total current derivative assets |  | 12
Other contracts | Accounts receivable and other | Non-Qualifying Derivative Instruments |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Current derivative assets, Total Gross Derivative Instruments |  | 8
Other contracts | Accounts receivable and other | Cash Flow Hedges. | Designated as hedging instrument |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Current derivative assets, Total Gross Derivative Instruments |  | 4
Other contracts | Deferred amounts and other assets |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Long-term derivative assets, Total Gross Derivative Instruments |  | 8
Total long-term derivative assets |  | 8
Other contracts | Deferred amounts and other assets | Non-Qualifying Derivative Instruments |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Long-term derivative assets, Total Gross Derivative Instruments |  | 3
Other contracts | Deferred amounts and other assets | Cash Flow Hedges. | Designated as hedging instrument |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Long-term derivative assets, Total Gross Derivative Instruments |  | CAD 5
Other contracts | Accounts payable and other |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Current derivative liabilities, Total Gross Derivative Instruments | (8) |
Other contracts | Accounts payable and other | Non-Qualifying Derivative Instruments |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Current derivative liabilities, Total Gross Derivative Instruments | (6) |
Other contracts | Accounts payable and other | Cash Flow Hedges. | Designated as hedging instrument |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Current derivative liabilities, Total Gross Derivative Instruments | (2) |
Other contracts | Other long-term liabilities |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Long-term derivative liabilities, Total Gross Derivative Instruments | (13) |
Other contracts | Other long-term liabilities | Non-Qualifying Derivative Instruments |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Long-term derivative liabilities, Total Gross Derivative Instruments | (5) |
Other contracts | Other long-term liabilities | Cash Flow Hedges. | Designated as hedging instrument |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Long-term derivative liabilities, Total Gross Derivative Instruments | CAD (8) |

X
- Definition This is the amount available for offset which represents what we can offset under current guidance but as a policy have chosen not to offset, related to current derivative asset. Offset amounts are determined using criteria such as events of bankruptcy or other significant credit event. + References No definition available. + Details
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- Definition This is the amount available for offset which represents what we can offset under current guidance but as a policy have chosen not to offset, related to noncurrent derivative asset. Offset amounts are determined using criteria such as events of bankruptcy or other significant credit event. + References No definition available. + Details
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- Definition Represents the fair value of derivative asset, presented on a gross basis even when the derivative instrument is subject to master netting arrangements and which is expected to be converted into cash or otherwise disposed of within a year or the normal operating cycle, if longer. + References No definition available. + Details
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- Definition Represents the fair value of derivative asset, presented on a gross basis even when the derivative instrument is subject to master netting arrangements and which is expected to exist longer than one year or beyond the normal operating cycle, if longer. + References No definition available. + Details
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- Definition Represents the fair value of derivative liability, presented on a gross basis even when the derivative instrument is subject to master netting arrangements and which is expected to be extinguished or otherwise disposed of within a year or the normal operating cycle, if longer. + References No definition available. + Details
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- Definition Represents the fair value of derivative liability, presented on a gross basis even when the derivative instrument is subject to master netting arrangements and which is expected to be extinguished or otherwise disposed of after one year or beyond the normal operating cycle, if longer. + References No definition available. + Details
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- Definition This is the amount available for offset which represents what we can offset under current guidance but as a policy have chosen not to offset, related to current derivative liability. Offset amounts are determined using criteria such as events of bankruptcy or other significant credit event. + References No definition available. + Details
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- Definition This is the amount available for offset which represents what we can offset under current guidance but as a policy have chosen not to offset, related to noncurrent derivative liability. Offset amounts are determined using criteria such as events of bankruptcy or other significant credit event. + References No definition available. + Details
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- Definition Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, expected to be settled after one year or the normal operating cycle, if longer. Includes assets not subject to a master netting arrangement and not elected to be offset. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41271-113958 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=49121117&loc=d3e13433-108611 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41228-113958 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=49121117&loc=d3e13495-108611 + Details
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