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RISK MANAGEMENT AND FINANCIAL INSTRUMENTS - Total Derivative Instruments (Details) - CAD ($) $ in Millions | Jun. 30, 2021 | Dec. 31, 2020
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TOTAL DERIVATIVE INSTRUMENTS |  |
Total net derivative asset/(liability) | $ (222) | $ (1,069)
Derivative liabilities, Total Net Derivative Instruments | (222) | (1,069)
Non-Qualifying Derivative Instruments |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Total net derivative asset/(liability) | 78 | (373)
Cash Flow Hedges | Designated as hedging instrument |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Total net derivative asset/(liability) | (147) | (580)
Fair Value Hedges | Designated as hedging instrument |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Total net derivative asset/(liability) | (153) | (116)
Accounts receivable and other |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Derivative assets | 537 | 323
Derivative assets, Amounts Available for Offset | (203) | (109)
Derivative assets, Total Net Derivative Instruments | 334 | 214
Accounts receivable and other | Non-Qualifying Derivative Instruments |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Derivative assets | 536 | 323
Accounts receivable and other | Cash Flow Hedges | Designated as hedging instrument |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Derivative assets | 1 | 0
Accounts receivable and other | Fair Value Hedges | Designated as hedging instrument |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Derivative assets | 0 | 0
Deferred amounts and other assets |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Derivative assets | 718 | 561
Derivative assets, Amounts Available for Offset | (270) | (252)
Derivative assets, Total Net Derivative Instruments | 448 | 309
Deferred amounts and other assets | Non-Qualifying Derivative Instruments |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Derivative assets | 559 | 491
Deferred amounts and other assets | Cash Flow Hedges | Designated as hedging instrument |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Derivative assets | 159 | 70
Deferred amounts and other assets | Fair Value Hedges | Designated as hedging instrument |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Derivative assets | 0 | 0
Accounts payable and other |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Derivative liabilities | (798) | (894)
Derivative liabilities, Amounts Available for Offset | 203 | 109
Derivative liabilities, Total Net Derivative Instruments | (595) | (785)
Accounts payable and other | Non-Qualifying Derivative Instruments |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Derivative liabilities | (466) | (434)
Accounts payable and other | Cash Flow Hedges | Designated as hedging instrument |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Derivative liabilities | (179) | (431)
Accounts payable and other | Fair Value Hedges | Designated as hedging instrument |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Derivative liabilities | (153) | (29)
Other long-term liabilities |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Derivative liabilities | (679) | (1,059)
Derivative liabilities, Amounts Available for Offset | 270 | 252
Derivative liabilities, Total Net Derivative Instruments | (409) | (807)
Other long-term liabilities | Non-Qualifying Derivative Instruments |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Derivative liabilities | (551) | (753)
Other long-term liabilities | Cash Flow Hedges | Designated as hedging instrument |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Derivative liabilities | (128) | (219)
Other long-term liabilities | Fair Value Hedges | Designated as hedging instrument |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Derivative liabilities | 0 | (87)
Foreign exchange contracts |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Total net derivative asset/(liability) | 93 | (299)
Derivative liabilities, Total Net Derivative Instruments | 93 | (299)
Foreign exchange contracts | Non-Qualifying Derivative Instruments |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Total net derivative asset/(liability) | 260 | (192)
Foreign exchange contracts | Cash Flow Hedges | Designated as hedging instrument |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Total net derivative asset/(liability) | (14) | 9
Foreign exchange contracts | Fair Value Hedges | Designated as hedging instrument |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Total net derivative asset/(liability) | (153) | (116)
Foreign exchange contracts | Accounts receivable and other |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Derivative assets | 312 | 180
Derivative assets, Amounts Available for Offset | (29) | (28)
Derivative assets, Total Net Derivative Instruments | 283 | 152
Foreign exchange contracts | Accounts receivable and other | Non-Qualifying Derivative Instruments |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Derivative assets | 312 | 180
Foreign exchange contracts | Accounts receivable and other | Cash Flow Hedges | Designated as hedging instrument |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Derivative assets | 0 | 0
Foreign exchange contracts | Accounts receivable and other | Fair Value Hedges | Designated as hedging instrument |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Derivative assets | 0 | 0
Foreign exchange contracts | Deferred amounts and other assets |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Derivative assets | 493 | 466
Derivative assets, Amounts Available for Offset | (207) | (218)
Derivative assets, Total Net Derivative Instruments | 286 | 248
Foreign exchange contracts | Deferred amounts and other assets | Non-Qualifying Derivative Instruments |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Derivative assets | 493 | 452
Foreign exchange contracts | Deferred amounts and other assets | Cash Flow Hedges | Designated as hedging instrument |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Derivative assets | 0 | 14
Foreign exchange contracts | Deferred amounts and other assets | Fair Value Hedges | Designated as hedging instrument |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Derivative assets | 0 | 0
Foreign exchange contracts | Accounts payable and other |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Derivative liabilities | (277) | (185)
Derivative liabilities, Amounts Available for Offset | 29 | 28
Derivative liabilities, Total Net Derivative Instruments | (248) | (157)
Foreign exchange contracts | Accounts payable and other | Non-Qualifying Derivative Instruments |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Derivative liabilities | (110) | (151)
Foreign exchange contracts | Accounts payable and other | Cash Flow Hedges | Designated as hedging instrument |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Derivative liabilities | (14) | (5)
Foreign exchange contracts | Accounts payable and other | Fair Value Hedges | Designated as hedging instrument |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Derivative liabilities | (153) | (29)
Foreign exchange contracts | Other long-term liabilities |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Derivative liabilities | (435) | (760)
Derivative liabilities, Amounts Available for Offset | 207 | 218
Derivative liabilities, Total Net Derivative Instruments | (228) | (542)
Foreign exchange contracts | Other long-term liabilities | Non-Qualifying Derivative Instruments |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Derivative liabilities | (435) | (673)
Foreign exchange contracts | Other long-term liabilities | Cash Flow Hedges | Designated as hedging instrument |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Derivative liabilities | 0 | 0
Foreign exchange contracts | Other long-term liabilities | Fair Value Hedges | Designated as hedging instrument |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Derivative liabilities | 0 | (87)
Interest rate contracts |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Total net derivative asset/(liability) | (145) | (610)
Derivative liabilities, Total Net Derivative Instruments | (145) | (610)
Interest rate contracts | Non-Qualifying Derivative Instruments |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Total net derivative asset/(liability) | (23) | (25)
Interest rate contracts | Cash Flow Hedges | Designated as hedging instrument |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Total net derivative asset/(liability) | (122) | (585)
Interest rate contracts | Fair Value Hedges | Designated as hedging instrument |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Total net derivative asset/(liability) | 0 | 0
Interest rate contracts | Accounts receivable and other |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Derivative assets |  | 0
Derivative assets, Amounts Available for Offset |  | 0
Derivative assets, Total Net Derivative Instruments |  | 0
Interest rate contracts | Accounts receivable and other | Non-Qualifying Derivative Instruments |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Derivative assets |  | 0
Interest rate contracts | Accounts receivable and other | Cash Flow Hedges | Designated as hedging instrument |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Derivative assets |  | 0
Interest rate contracts | Accounts receivable and other | Fair Value Hedges | Designated as hedging instrument |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Derivative assets |  | 0
Interest rate contracts | Deferred amounts and other assets |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Derivative assets | 157 | 56
Derivative assets, Amounts Available for Offset | (23) | (25)
Derivative assets, Total Net Derivative Instruments | 134 | 31
Interest rate contracts | Deferred amounts and other assets | Non-Qualifying Derivative Instruments |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Derivative assets | 0 | 0
Interest rate contracts | Deferred amounts and other assets | Cash Flow Hedges | Designated as hedging instrument |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Derivative assets | 157 | 56
Interest rate contracts | Deferred amounts and other assets | Fair Value Hedges | Designated as hedging instrument |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Derivative assets | 0 | 0
Interest rate contracts | Accounts payable and other |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Derivative liabilities | (156) | (425)
Derivative liabilities, Amounts Available for Offset | 0 | 0
Derivative liabilities, Total Net Derivative Instruments | (156) | (425)
Interest rate contracts | Accounts payable and other | Non-Qualifying Derivative Instruments |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Derivative liabilities | 0 | (2)
Interest rate contracts | Accounts payable and other | Cash Flow Hedges | Designated as hedging instrument |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Derivative liabilities | (156) | (423)
Interest rate contracts | Accounts payable and other | Fair Value Hedges | Designated as hedging instrument |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Derivative liabilities | 0 | 0
Interest rate contracts | Other long-term liabilities |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Derivative liabilities | (146) | (241)
Derivative liabilities, Amounts Available for Offset | 23 | 25
Derivative liabilities, Total Net Derivative Instruments | (123) | (216)
Interest rate contracts | Other long-term liabilities | Non-Qualifying Derivative Instruments |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Derivative liabilities | (23) | (23)
Interest rate contracts | Other long-term liabilities | Cash Flow Hedges | Designated as hedging instrument |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Derivative liabilities | (123) | (218)
Interest rate contracts | Other long-term liabilities | Fair Value Hedges | Designated as hedging instrument |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Derivative liabilities | 0 | 0
Commodity contracts |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Total net derivative asset/(liability) | (180) | (156)
Derivative liabilities, Total Net Derivative Instruments | (180) | (156)
Commodity contracts | Non-Qualifying Derivative Instruments |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Total net derivative asset/(liability) | (166) | (153)
Commodity contracts | Cash Flow Hedges | Designated as hedging instrument |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Total net derivative asset/(liability) | (14) | (3)
Commodity contracts | Fair Value Hedges | Designated as hedging instrument |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Total net derivative asset/(liability) | 0 | 0
Commodity contracts | Accounts receivable and other |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Derivative assets | 219 | 143
Derivative assets, Amounts Available for Offset | (174) | (81)
Derivative assets, Total Net Derivative Instruments | 45 | 62
Commodity contracts | Accounts receivable and other | Non-Qualifying Derivative Instruments |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Derivative assets | 219 | 143
Commodity contracts | Accounts receivable and other | Cash Flow Hedges | Designated as hedging instrument |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Derivative assets | 0 | 0
Commodity contracts | Accounts receivable and other | Fair Value Hedges | Designated as hedging instrument |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Derivative assets | 0 | 0
Commodity contracts | Deferred amounts and other assets |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Derivative assets | 64 | 39
Derivative assets, Amounts Available for Offset | (40) | (9)
Derivative assets, Total Net Derivative Instruments | 24 | 30
Commodity contracts | Deferred amounts and other assets | Non-Qualifying Derivative Instruments |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Derivative assets | 64 | 39
Commodity contracts | Deferred amounts and other assets | Cash Flow Hedges | Designated as hedging instrument |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Derivative assets | 0 | 0
Commodity contracts | Deferred amounts and other assets | Fair Value Hedges | Designated as hedging instrument |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Derivative assets | 0 | 0
Commodity contracts | Accounts payable and other |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Derivative liabilities | (365) | (280)
Derivative liabilities, Amounts Available for Offset | 174 | 81
Derivative liabilities, Total Net Derivative Instruments | (191) | (199)
Commodity contracts | Accounts payable and other | Non-Qualifying Derivative Instruments |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Derivative liabilities | (356) | (278)
Commodity contracts | Accounts payable and other | Cash Flow Hedges | Designated as hedging instrument |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Derivative liabilities | (9) | (2)
Commodity contracts | Accounts payable and other | Fair Value Hedges | Designated as hedging instrument |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Derivative liabilities | 0 | 0
Commodity contracts | Other long-term liabilities |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Derivative liabilities | (98) | (58)
Derivative liabilities, Amounts Available for Offset | 40 | 9
Derivative liabilities, Total Net Derivative Instruments | (58) | (49)
Commodity contracts | Other long-term liabilities | Non-Qualifying Derivative Instruments |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Derivative liabilities | (93) | (57)
Commodity contracts | Other long-term liabilities | Cash Flow Hedges | Designated as hedging instrument |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Derivative liabilities | (5) | (1)
Commodity contracts | Other long-term liabilities | Fair Value Hedges | Designated as hedging instrument |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Derivative liabilities | 0 | 0
Other contracts |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Total net derivative asset/(liability) | 10 | (4)
Derivative liabilities, Total Net Derivative Instruments | 10 | (4)
Other contracts | Non-Qualifying Derivative Instruments |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Total net derivative asset/(liability) | 7 | (3)
Other contracts | Cash Flow Hedges | Designated as hedging instrument |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Total net derivative asset/(liability) | 3 | (1)
Other contracts | Fair Value Hedges | Designated as hedging instrument |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Total net derivative asset/(liability) | 0 | 0
Other contracts | Accounts receivable and other |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Derivative assets | 6 |
Derivative assets, Amounts Available for Offset | 0 |
Derivative assets, Total Net Derivative Instruments | 6 |
Other contracts | Accounts receivable and other | Non-Qualifying Derivative Instruments |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Derivative assets | 5 |
Other contracts | Accounts receivable and other | Cash Flow Hedges | Designated as hedging instrument |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Derivative assets | 1 |
Other contracts | Accounts receivable and other | Fair Value Hedges | Designated as hedging instrument |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Derivative assets | 0 |
Other contracts | Deferred amounts and other assets |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Derivative assets | 4 |
Derivative assets, Amounts Available for Offset | 0 |
Derivative assets, Total Net Derivative Instruments | 4 |
Other contracts | Deferred amounts and other assets | Non-Qualifying Derivative Instruments |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Derivative assets | 2 |
Other contracts | Deferred amounts and other assets | Cash Flow Hedges | Designated as hedging instrument |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Derivative assets | 2 |
Other contracts | Deferred amounts and other assets | Fair Value Hedges | Designated as hedging instrument |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Derivative assets | $ 0 |
Other contracts | Accounts payable and other |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Derivative liabilities |  | (4)
Derivative liabilities, Amounts Available for Offset |  | 0
Derivative liabilities, Total Net Derivative Instruments |  | (4)
Other contracts | Accounts payable and other | Non-Qualifying Derivative Instruments |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Derivative liabilities |  | (3)
Other contracts | Accounts payable and other | Cash Flow Hedges | Designated as hedging instrument |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Derivative liabilities |  | (1)
Other contracts | Accounts payable and other | Fair Value Hedges | Designated as hedging instrument |  |
TOTAL DERIVATIVE INSTRUMENTS |  |
Derivative liabilities |  | $ 0

X
- 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, net of amounts that are available for offset but as a policy have been elected not to be offset. + 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 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 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 liability or 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. Includes liabilities not subject to a master netting arrangement and not elected to be offset. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -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 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=99393222&loc=SL20226008-175313 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=123594938&loc=d3e13433-108611 Reference 4: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 22 -URI http://asc.fasb.org/extlink&oid=99393222&loc=SL20226052-175313 + Details
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