RISK MANAGEMENT AND FINANCIAL INSTRUMENTS - Total Derivative Instruments (Details) - CAD ($) $ in Millions | Sep. 30, 2023 | Dec. 31, 2022 |
TOTAL DERIVATIVE INSTRUMENTS | | |
Total net financial asset/(liability) | $ (760) | $ (546) |
Derivative liabilities, Total Net Derivative Instruments | (760) | (546) |
Non-Qualifying Derivative Instruments | | |
TOTAL DERIVATIVE INSTRUMENTS | | |
Total net financial asset/(liability) | (1,193) | (1,476) |
Derivative Instruments Used as Cash Flow Hedges | Designated as hedging instrument | | |
TOTAL DERIVATIVE INSTRUMENTS | | |
Total net financial asset/(liability) | 416 | 816 |
Derivative Instruments Used as Fair Value Hedges | Designated as hedging instrument | | |
TOTAL DERIVATIVE INSTRUMENTS | | |
Total net financial asset/(liability) | 17 | 114 |
Other current assets | | |
TOTAL DERIVATIVE INSTRUMENTS | | |
Derivative assets | 693 | 1,015 |
Derivative assets, Amounts Available for Offset | (181) | (223) |
Derivative assets, Total Net Derivative Instruments | 512 | 792 |
Other current assets | Non-Qualifying Derivative Instruments | | |
TOTAL DERIVATIVE INSTRUMENTS | | |
Derivative assets | 304 | 366 |
Other current assets | Derivative Instruments Used as Cash Flow Hedges | Designated as hedging instrument | | |
TOTAL DERIVATIVE INSTRUMENTS | | |
Derivative assets | 318 | 649 |
Other current assets | Derivative Instruments Used as Fair Value Hedges | Designated as hedging instrument | | |
TOTAL DERIVATIVE INSTRUMENTS | | |
Derivative assets | 71 | 0 |
Deferred amounts and other assets | | |
TOTAL DERIVATIVE INSTRUMENTS | | |
Derivative assets | 346 | 627 |
Derivative assets, Amounts Available for Offset | (126) | (163) |
Derivative assets, Total Net Derivative Instruments | 220 | 464 |
Deferred amounts and other assets | Non-Qualifying Derivative Instruments | | |
TOTAL DERIVATIVE INSTRUMENTS | | |
Derivative assets | 185 | 216 |
Deferred amounts and other assets | Derivative Instruments Used as Cash Flow Hedges | Designated as hedging instrument | | |
TOTAL DERIVATIVE INSTRUMENTS | | |
Derivative assets | 130 | 255 |
Deferred amounts and other assets | Derivative Instruments Used as Fair Value Hedges | Designated as hedging instrument | | |
TOTAL DERIVATIVE INSTRUMENTS | | |
Derivative assets | 31 | 156 |
Other current liabilities | | |
TOTAL DERIVATIVE INSTRUMENTS | | |
Derivative liabilities | (579) | (898) |
Derivative liabilities, Amounts Available for Offset | 181 | 223 |
Derivative liabilities, Total Net Derivative Instruments | (398) | (675) |
Other current liabilities | Non-Qualifying Derivative Instruments | | |
TOTAL DERIVATIVE INSTRUMENTS | | |
Derivative liabilities | (511) | (808) |
Other current liabilities | Derivative Instruments Used as Cash Flow Hedges | Designated as hedging instrument | | |
TOTAL DERIVATIVE INSTRUMENTS | | |
Derivative liabilities | (19) | (48) |
Other current liabilities | Derivative Instruments Used as Fair Value Hedges | Designated as hedging instrument | | |
TOTAL DERIVATIVE INSTRUMENTS | | |
Derivative liabilities | (49) | (42) |
Other long-term liabilities | | |
TOTAL DERIVATIVE INSTRUMENTS | | |
Derivative liabilities | (1,220) | (1,290) |
Derivative liabilities, Amounts Available for Offset | 126 | 163 |
Derivative liabilities, Total Net Derivative Instruments | (1,094) | (1,127) |
Other long-term liabilities | Non-Qualifying Derivative Instruments | | |
TOTAL DERIVATIVE INSTRUMENTS | | |
Derivative liabilities | (1,171) | (1,250) |
Other long-term liabilities | Derivative Instruments Used as Cash Flow Hedges | Designated as hedging instrument | | |
TOTAL DERIVATIVE INSTRUMENTS | | |
Derivative liabilities | (13) | (40) |
Other long-term liabilities | Derivative Instruments Used as Fair Value Hedges | Designated as hedging instrument | | |
TOTAL DERIVATIVE INSTRUMENTS | | |
Derivative liabilities | (36) | 0 |
Foreign exchange contracts | | |
TOTAL DERIVATIVE INSTRUMENTS | | |
Total net financial asset/(liability) | (1,009) | (1,327) |
Derivative liabilities, Total Net Derivative Instruments | (1,009) | (1,327) |
Foreign exchange contracts | Non-Qualifying Derivative Instruments | | |
TOTAL DERIVATIVE INSTRUMENTS | | |
Total net financial asset/(liability) | (1,026) | (1,441) |
Foreign exchange contracts | Derivative Instruments Used as Cash Flow Hedges | Designated as hedging instrument | | |
TOTAL DERIVATIVE INSTRUMENTS | | |
Total net financial asset/(liability) | 0 | $ 0 |
Derivative Liability, Statement of Financial Position [Extensible Enumeration] | | Other Liabilities, Noncurrent |
Foreign exchange contracts | Derivative Instruments Used as Fair Value Hedges | Designated as hedging instrument | | |
TOTAL DERIVATIVE INSTRUMENTS | | |
Total net financial asset/(liability) | 17 | $ 114 |
Foreign exchange contracts | Other current assets | | |
TOTAL DERIVATIVE INSTRUMENTS | | |
Derivative assets | 103 | 46 |
Derivative assets, Amounts Available for Offset | (25) | (41) |
Derivative assets, Total Net Derivative Instruments | 78 | 5 |
Foreign exchange contracts | Other current assets | Non-Qualifying Derivative Instruments | | |
TOTAL DERIVATIVE INSTRUMENTS | | |
Derivative assets | 32 | 46 |
Foreign exchange contracts | Other current assets | Derivative Instruments Used as Cash Flow Hedges | Designated as hedging instrument | | |
TOTAL DERIVATIVE INSTRUMENTS | | |
Derivative assets | 0 | 0 |
Foreign exchange contracts | Other current assets | Derivative Instruments Used as Fair Value Hedges | Designated as hedging instrument | | |
TOTAL DERIVATIVE INSTRUMENTS | | |
Derivative assets | 71 | 0 |
Foreign exchange contracts | Deferred amounts and other assets | | |
TOTAL DERIVATIVE INSTRUMENTS | | |
Derivative assets | 140 | 309 |
Derivative assets, Amounts Available for Offset | (90) | (138) |
Derivative assets, Total Net Derivative Instruments | 50 | 171 |
Foreign exchange contracts | Deferred amounts and other assets | Non-Qualifying Derivative Instruments | | |
TOTAL DERIVATIVE INSTRUMENTS | | |
Derivative assets | 109 | 153 |
Foreign exchange contracts | Deferred amounts and other assets | Derivative Instruments Used as Cash Flow Hedges | Designated as hedging instrument | | |
TOTAL DERIVATIVE INSTRUMENTS | | |
Derivative assets | 0 | 0 |
Foreign exchange contracts | Deferred amounts and other assets | Derivative Instruments Used as Fair Value Hedges | Designated as hedging instrument | | |
TOTAL DERIVATIVE INSTRUMENTS | | |
Derivative assets | 31 | 156 |
Foreign exchange contracts | Other current liabilities | | |
TOTAL DERIVATIVE INSTRUMENTS | | |
Derivative liabilities | (212) | (566) |
Derivative liabilities, Amounts Available for Offset | 25 | 41 |
Derivative liabilities, Total Net Derivative Instruments | (187) | (525) |
Foreign exchange contracts | Other current liabilities | Non-Qualifying Derivative Instruments | | |
TOTAL DERIVATIVE INSTRUMENTS | | |
Derivative liabilities | (163) | (524) |
Foreign exchange contracts | Other current liabilities | Derivative Instruments Used as Cash Flow Hedges | Designated as hedging instrument | | |
TOTAL DERIVATIVE INSTRUMENTS | | |
Derivative liabilities | 0 | 0 |
Foreign exchange contracts | Other current liabilities | Derivative Instruments Used as Fair Value Hedges | Designated as hedging instrument | | |
TOTAL DERIVATIVE INSTRUMENTS | | |
Derivative liabilities | (49) | (42) |
Foreign exchange contracts | Other long-term liabilities | | |
TOTAL DERIVATIVE INSTRUMENTS | | |
Derivative liabilities | (1,040) | (1,116) |
Derivative liabilities, Amounts Available for Offset | 90 | 138 |
Derivative liabilities, Total Net Derivative Instruments | (950) | (978) |
Foreign exchange contracts | Other long-term liabilities | Non-Qualifying Derivative Instruments | | |
TOTAL DERIVATIVE INSTRUMENTS | | |
Derivative liabilities | (1,004) | (1,116) |
Foreign exchange contracts | Other long-term liabilities | Derivative Instruments Used as Cash Flow Hedges | Designated as hedging instrument | | |
TOTAL DERIVATIVE INSTRUMENTS | | |
Derivative liabilities | 0 | 0 |
Foreign exchange contracts | Other long-term liabilities | Derivative Instruments Used as Fair Value Hedges | Designated as hedging instrument | | |
TOTAL DERIVATIVE INSTRUMENTS | | |
Derivative liabilities | (36) | 0 |
Interest rate contracts | | |
TOTAL DERIVATIVE INSTRUMENTS | | |
Derivative liabilities | | (4) |
Total net financial asset/(liability) | 528 | 910 |
Derivative assets, Total Net Derivative Instruments | 528 | $ 910 |
Derivative Liability, Statement of Financial Position [Extensible Enumeration] | | Other Liabilities, Noncurrent |
Interest rate contracts | Non-Qualifying Derivative Instruments | | |
TOTAL DERIVATIVE INSTRUMENTS | | |
Derivative liabilities | | $ (1) |
Total net financial asset/(liability) | 82 | $ 10 |
Derivative Liability, Statement of Financial Position [Extensible Enumeration] | | Other Liabilities, Noncurrent |
Interest rate contracts | Derivative Instruments Used as Cash Flow Hedges | Designated as hedging instrument | | |
TOTAL DERIVATIVE INSTRUMENTS | | |
Derivative liabilities | | $ (3) |
Total net financial asset/(liability) | 446 | 900 |
Interest rate contracts | Derivative Instruments Used as Fair Value Hedges | Designated as hedging instrument | | |
TOTAL DERIVATIVE INSTRUMENTS | | |
Derivative liabilities | | 0 |
Total net financial asset/(liability) | 0 | $ 0 |
Derivative Liability, Statement of Financial Position [Extensible Enumeration] | | Other Liabilities, Noncurrent |
Interest rate contracts | Other current assets | | |
TOTAL DERIVATIVE INSTRUMENTS | | |
Derivative assets | 384 | $ 660 |
Derivative assets, Amounts Available for Offset | (3) | 0 |
Derivative assets, Total Net Derivative Instruments | 381 | 660 |
Interest rate contracts | Other current assets | Non-Qualifying Derivative Instruments | | |
TOTAL DERIVATIVE INSTRUMENTS | | |
Derivative assets | 66 | 11 |
Interest rate contracts | Other current assets | Derivative Instruments Used as Cash Flow Hedges | Designated as hedging instrument | | |
TOTAL DERIVATIVE INSTRUMENTS | | |
Derivative assets | 318 | 649 |
Interest rate contracts | Other current assets | Derivative Instruments Used as Fair Value Hedges | Designated as hedging instrument | | |
TOTAL DERIVATIVE INSTRUMENTS | | |
Derivative assets | 0 | 0 |
Interest rate contracts | Deferred amounts and other assets | | |
TOTAL DERIVATIVE INSTRUMENTS | | |
Derivative assets | 149 | 254 |
Derivative assets, Amounts Available for Offset | 0 | 0 |
Derivative assets, Total Net Derivative Instruments | 149 | 254 |
Interest rate contracts | Deferred amounts and other assets | Non-Qualifying Derivative Instruments | | |
TOTAL DERIVATIVE INSTRUMENTS | | |
Derivative assets | 19 | 0 |
Interest rate contracts | Deferred amounts and other assets | Derivative Instruments Used as Cash Flow Hedges | Designated as hedging instrument | | |
TOTAL DERIVATIVE INSTRUMENTS | | |
Derivative assets | 130 | 254 |
Interest rate contracts | Deferred amounts and other assets | Derivative Instruments Used as Fair Value Hedges | Designated as hedging instrument | | |
TOTAL DERIVATIVE INSTRUMENTS | | |
Derivative assets | 0 | 0 |
Interest rate contracts | Other current liabilities | | |
TOTAL DERIVATIVE INSTRUMENTS | | |
Derivative liabilities | (3) | |
Derivative liabilities, Amounts Available for Offset | 3 | |
Derivative liabilities, Total Net Derivative Instruments | 0 | |
Interest rate contracts | Other current liabilities | Non-Qualifying Derivative Instruments | | |
TOTAL DERIVATIVE INSTRUMENTS | | |
Derivative liabilities | (3) | |
Interest rate contracts | Other current liabilities | Derivative Instruments Used as Cash Flow Hedges | Designated as hedging instrument | | |
TOTAL DERIVATIVE INSTRUMENTS | | |
Derivative liabilities | 0 | |
Interest rate contracts | Other current liabilities | Derivative Instruments Used as Fair Value Hedges | Designated as hedging instrument | | |
TOTAL DERIVATIVE INSTRUMENTS | | |
Derivative liabilities | 0 | |
Interest rate contracts | Other long-term liabilities | | |
TOTAL DERIVATIVE INSTRUMENTS | | |
Derivative liabilities | (2) | |
Derivative liabilities, Amounts Available for Offset | 0 | 0 |
Derivative liabilities, Total Net Derivative Instruments | (2) | (4) |
Interest rate contracts | Other long-term liabilities | Non-Qualifying Derivative Instruments | | |
TOTAL DERIVATIVE INSTRUMENTS | | |
Derivative liabilities | 0 | |
Interest rate contracts | Other long-term liabilities | Derivative Instruments Used as Cash Flow Hedges | Designated as hedging instrument | | |
TOTAL DERIVATIVE INSTRUMENTS | | |
Derivative liabilities | (2) | |
Interest rate contracts | Other long-term liabilities | Derivative Instruments Used as Fair Value Hedges | Designated as hedging instrument | | |
TOTAL DERIVATIVE INSTRUMENTS | | |
Derivative liabilities | 0 | |
Commodity contracts | | |
TOTAL DERIVATIVE INSTRUMENTS | | |
Total net financial asset/(liability) | (275) | (139) |
Derivative liabilities, Total Net Derivative Instruments | (275) | (139) |
Commodity contracts | Non-Qualifying Derivative Instruments | | |
TOTAL DERIVATIVE INSTRUMENTS | | |
Total net financial asset/(liability) | (246) | (54) |
Commodity contracts | Derivative Instruments Used as Cash Flow Hedges | Designated as hedging instrument | | |
TOTAL DERIVATIVE INSTRUMENTS | | |
Total net financial asset/(liability) | (29) | (85) |
Commodity contracts | Derivative Instruments Used as Fair Value Hedges | Designated as hedging instrument | | |
TOTAL DERIVATIVE INSTRUMENTS | | |
Total net financial asset/(liability) | 0 | 0 |
Commodity contracts | Other current assets | | |
TOTAL DERIVATIVE INSTRUMENTS | | |
Derivative assets | 206 | 302 |
Derivative assets, Amounts Available for Offset | (153) | (182) |
Derivative assets, Total Net Derivative Instruments | 53 | 120 |
Commodity contracts | Other current assets | Non-Qualifying Derivative Instruments | | |
TOTAL DERIVATIVE INSTRUMENTS | | |
Derivative assets | 206 | 302 |
Commodity contracts | Other current assets | Derivative Instruments Used as Cash Flow Hedges | Designated as hedging instrument | | |
TOTAL DERIVATIVE INSTRUMENTS | | |
Derivative assets | 0 | 0 |
Commodity contracts | Other current assets | Derivative Instruments Used as 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 | 57 | 61 |
Derivative assets, Amounts Available for Offset | (36) | (25) |
Derivative assets, Total Net Derivative Instruments | 21 | 36 |
Commodity contracts | Deferred amounts and other assets | Non-Qualifying Derivative Instruments | | |
TOTAL DERIVATIVE INSTRUMENTS | | |
Derivative assets | 57 | 61 |
Commodity contracts | Deferred amounts and other assets | Derivative Instruments Used as Cash Flow Hedges | Designated as hedging instrument | | |
TOTAL DERIVATIVE INSTRUMENTS | | |
Derivative assets | 0 | 0 |
Commodity contracts | Deferred amounts and other assets | Derivative Instruments Used as Fair Value Hedges | Designated as hedging instrument | | |
TOTAL DERIVATIVE INSTRUMENTS | | |
Derivative assets | 0 | 0 |
Commodity contracts | Other current liabilities | | |
TOTAL DERIVATIVE INSTRUMENTS | | |
Derivative liabilities | (362) | (332) |
Derivative liabilities, Amounts Available for Offset | 153 | 182 |
Derivative liabilities, Total Net Derivative Instruments | (209) | (150) |
Commodity contracts | Other current liabilities | Non-Qualifying Derivative Instruments | | |
TOTAL DERIVATIVE INSTRUMENTS | | |
Derivative liabilities | (343) | (284) |
Commodity contracts | Other current liabilities | Derivative Instruments Used as Cash Flow Hedges | Designated as hedging instrument | | |
TOTAL DERIVATIVE INSTRUMENTS | | |
Derivative liabilities | (19) | (48) |
Commodity contracts | Other current liabilities | Derivative Instruments Used as 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 | (176) | (170) |
Derivative liabilities, Amounts Available for Offset | 36 | 25 |
Derivative liabilities, Total Net Derivative Instruments | (140) | (145) |
Commodity contracts | Other long-term liabilities | Non-Qualifying Derivative Instruments | | |
TOTAL DERIVATIVE INSTRUMENTS | | |
Derivative liabilities | (166) | (133) |
Commodity contracts | Other long-term liabilities | Derivative Instruments Used as Cash Flow Hedges | Designated as hedging instrument | | |
TOTAL DERIVATIVE INSTRUMENTS | | |
Derivative liabilities | (10) | (37) |
Commodity contracts | Other long-term liabilities | Derivative Instruments Used as Fair Value Hedges | Designated as hedging instrument | | |
TOTAL DERIVATIVE INSTRUMENTS | | |
Derivative liabilities | 0 | 0 |
Other contracts | | |
TOTAL DERIVATIVE INSTRUMENTS | | |
Total net financial asset/(liability) | (4) | 10 |
Derivative assets, Total Net Derivative Instruments | | 10 |
Derivative liabilities, Total Net Derivative Instruments | (4) | |
Other contracts | Non-Qualifying Derivative Instruments | | |
TOTAL DERIVATIVE INSTRUMENTS | | |
Total net financial asset/(liability) | (3) | 9 |
Other contracts | Derivative Instruments Used as Cash Flow Hedges | Designated as hedging instrument | | |
TOTAL DERIVATIVE INSTRUMENTS | | |
Total net financial asset/(liability) | (1) | 1 |
Other contracts | Derivative Instruments Used as Fair Value Hedges | Designated as hedging instrument | | |
TOTAL DERIVATIVE INSTRUMENTS | | |
Total net financial asset/(liability) | 0 | 0 |
Other contracts | Other current assets | | |
TOTAL DERIVATIVE INSTRUMENTS | | |
Derivative assets | | 7 |
Derivative assets, Amounts Available for Offset | | 0 |
Derivative assets, Total Net Derivative Instruments | | 7 |
Other contracts | Other current assets | Non-Qualifying Derivative Instruments | | |
TOTAL DERIVATIVE INSTRUMENTS | | |
Derivative assets | | 7 |
Other contracts | Other current assets | Derivative Instruments Used as Cash Flow Hedges | Designated as hedging instrument | | |
TOTAL DERIVATIVE INSTRUMENTS | | |
Derivative assets | | 0 |
Other contracts | Other current assets | Derivative Instruments Used as 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 | | 3 |
Derivative assets, Amounts Available for Offset | | 0 |
Derivative assets, Total Net Derivative Instruments | | 3 |
Other contracts | Deferred amounts and other assets | Non-Qualifying Derivative Instruments | | |
TOTAL DERIVATIVE INSTRUMENTS | | |
Derivative assets | | 2 |
Other contracts | Deferred amounts and other assets | Derivative Instruments Used as Cash Flow Hedges | Designated as hedging instrument | | |
TOTAL DERIVATIVE INSTRUMENTS | | |
Derivative assets | | 1 |
Other contracts | Deferred amounts and other assets | Derivative Instruments Used as Fair Value Hedges | Designated as hedging instrument | | |
TOTAL DERIVATIVE INSTRUMENTS | | |
Derivative assets | | $ 0 |
Other contracts | Other current liabilities | | |
TOTAL DERIVATIVE INSTRUMENTS | | |
Derivative liabilities | (2) | |
Derivative liabilities, Amounts Available for Offset | 0 | |
Derivative liabilities, Total Net Derivative Instruments | (2) | |
Other contracts | Other current liabilities | Non-Qualifying Derivative Instruments | | |
TOTAL DERIVATIVE INSTRUMENTS | | |
Derivative liabilities | (2) | |
Other contracts | Other current liabilities | Derivative Instruments Used as Cash Flow Hedges | Designated as hedging instrument | | |
TOTAL DERIVATIVE INSTRUMENTS | | |
Derivative liabilities | 0 | |
Other contracts | Other current liabilities | Derivative Instruments Used as Fair Value Hedges | Designated as hedging instrument | | |
TOTAL DERIVATIVE INSTRUMENTS | | |
Derivative liabilities | 0 | |
Other contracts | Other long-term liabilities | | |
TOTAL DERIVATIVE INSTRUMENTS | | |
Derivative liabilities | (2) | |
Derivative liabilities, Amounts Available for Offset | 0 | |
Derivative liabilities, Total Net Derivative Instruments | (2) | |
Other contracts | Other long-term liabilities | Non-Qualifying Derivative Instruments | | |
TOTAL DERIVATIVE INSTRUMENTS | | |
Derivative liabilities | (1) | |
Other contracts | Other long-term liabilities | Derivative Instruments Used as Cash Flow Hedges | Designated as hedging instrument | | |
TOTAL DERIVATIVE INSTRUMENTS | | |
Derivative liabilities | (1) | |
Other contracts | Other long-term liabilities | Derivative Instruments Used as Fair Value Hedges | Designated as hedging instrument | | |
TOTAL DERIVATIVE INSTRUMENTS | | |
Derivative liabilities | $ 0 | |