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Segmented Financial Information - Information By Reportable Segment (Details) - CAD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2020 | Dec. 31, 2021 | Dec. 31, 2020
Revenue, net of royalties |  |  |
Petroleum and natural gas sales |  | $ 1,868,195 | $ 975,477
Royalties |  | (339,156) | (163,735)
Revenue, net of royalties |  | 1,529,039 | 811,742
Expenses |  |  |
Operating |  | 343,002 | 331,345
Transportation |  | 32,261 | 28,437
Blending and other |  | 85,689 | 48,381
General and administrative |  | 40,804 | 34,268
Exploration and evaluation |  | 15,212 | 14,011
Depletion and depreciation |  | 464,580 | 486,380
Impairment (reversal) loss | $ 2,588,488 | (1,542,414) | 2,360,220
Share-based compensation |  | 6,389 | 7,216
Financing and interest |  | 111,159 | 125,441
Financial derivatives loss (gain) |  | 287,872 | (29,336)
Foreign exchange (gain) loss |  | (2,868) | 8,688
(Gain) loss on dispositions |  | (9,666) | (901)
Other income |  | (2,562) | (5,304)
Total expenses |  | (165,801) | 3,411,099
Net income (loss) before income taxes |  | 1,694,840 | (2,599,357)
Income tax (recovery) expense |  |  |
Current income tax expense |  | 1,272 | 574
Deferred income tax expense (recovery) |  | 79,968 | (160,967)
Income tax expense (recovery) |  | 81,240 | (160,393)
Net income (loss) |  | 1,613,600 | (2,438,964)
Additions to exploration and evaluation assets |  | (3,298) | (4,490)
Additions to oil and gas properties |  | 310,005 | 275,850
Property acquisitions |  | 1,557 | 0
Proceeds from dispositions |  | 7,804 | 182
Operating segments | Canada |  |  |
Revenue, net of royalties |  |  |
Petroleum and natural gas sales |  | 1,128,137 | 571,741
Royalties |  | (121,306) | (46,064)
Revenue, net of royalties |  | 1,006,831 | 525,677
Expenses |  |  |
Operating |  | 257,658 | 247,050
Transportation |  | 32,261 | 28,437
Blending and other |  | 85,689 | 48,381
General and administrative |  | 0 | 0
Exploration and evaluation |  | 15,212 | 14,011
Depletion and depreciation |  | 303,135 | 309,420
Impairment (reversal) loss |  | (1,100,000) | 1,737,000
Share-based compensation |  | 0 | 0
Financing and interest |  | 0 | 0
Financial derivatives loss (gain) |  | 0 | 0
Foreign exchange (gain) loss |  | 0 | 0
(Gain) loss on dispositions |  | (9,856) | (901)
Other income |  | (2,857) | (2,128)
Total expenses |  | (418,758) | 2,381,270
Net income (loss) before income taxes |  | 1,425,589 | (1,855,593)
Income tax (recovery) expense |  |  |
Current income tax expense |  | (548) | 469
Deferred income tax expense (recovery) |  | 86,928 | (77,201)
Income tax expense (recovery) |  | 86,380 | (76,732)
Net income (loss) |  | 1,339,209 | (1,778,861)
Additions to exploration and evaluation assets |  | 3,298 | 4,490
Additions to oil and gas properties |  | 204,912 | 170,462
Property acquisitions |  | 1,557 | 0
Proceeds from dispositions |  | (7,211) | (182)
Operating segments | U.S. |  |  |
Revenue, net of royalties |  |  |
Petroleum and natural gas sales |  | 740,058 | 403,736
Royalties |  | (217,850) | (117,671)
Revenue, net of royalties |  | 522,208 | 286,065
Expenses |  |  |
Operating |  | 85,344 | 84,295
Transportation |  | 0 | 0
Blending and other |  | 0 | 0
General and administrative |  | 0 | 0
Exploration and evaluation |  | 0 | 0
Depletion and depreciation |  | 155,806 | 169,439
Impairment (reversal) loss |  | (442,414) | 623,220
Share-based compensation |  | 0 | 0
Financing and interest |  | 0 | 0
Financial derivatives loss (gain) |  | 0 | 0
Foreign exchange (gain) loss |  | 0 | 0
(Gain) loss on dispositions |  | 190 | 0
Other income |  | 0 | 0
Total expenses |  | (201,074) | 876,954
Net income (loss) before income taxes |  | 723,282 | (590,889)
Income tax (recovery) expense |  |  |
Current income tax expense |  | 1,820 | 105
Deferred income tax expense (recovery) |  | 72,913 | (57,199)
Income tax expense (recovery) |  | 74,733 | (57,094)
Net income (loss) |  | 648,549 | (533,795)
Additions to exploration and evaluation assets |  | 0 | 0
Additions to oil and gas properties |  | 105,093 | 105,388
Property acquisitions |  | 0 | 0
Proceeds from dispositions |  | (593) | 0
Operating segments | Corporate |  |  |
Revenue, net of royalties |  |  |
Petroleum and natural gas sales |  | 0 | 0
Royalties |  | 0 | 0
Revenue, net of royalties |  | 0 | 0
Expenses |  |  |
Operating |  | 0 | 0
Transportation |  | 0 | 0
Blending and other |  | 0 | 0
General and administrative |  | 40,804 | 34,268
Exploration and evaluation |  | 0 | 0
Depletion and depreciation |  | 5,639 | 7,521
Impairment (reversal) loss |  | 0 | 0
Share-based compensation |  | 11,130 | 9,469
Financing and interest |  | 111,159 | 125,441
Financial derivatives loss (gain) |  | 287,872 | (29,336)
Foreign exchange (gain) loss |  | (2,868) | 8,688
(Gain) loss on dispositions |  | 0 | 0
Other income |  | 295 | (3,176)
Total expenses |  | 454,031 | 152,875
Net income (loss) before income taxes |  | (454,031) | (152,875)
Income tax (recovery) expense |  |  |
Current income tax expense |  | 0 | 0
Deferred income tax expense (recovery) |  | (79,873) | (26,567)
Income tax expense (recovery) |  | (79,873) | (26,567)
Net income (loss) |  | (374,158) | (126,308)
Additions to exploration and evaluation assets |  | 0 | 0
Additions to oil and gas properties |  | 0 | 0
Property acquisitions |  | 0 | 0
Proceeds from dispositions |  | 0 | 0
Operating segments | Consolidated |  |  |
Revenue, net of royalties |  |  |
Petroleum and natural gas sales |  | 1,868,195 | 975,477
Royalties |  | (339,156) | (163,735)
Revenue, net of royalties |  | 1,529,039 | 811,742
Expenses |  |  |
Operating |  | 343,002 | 331,345
Transportation |  | 32,261 | 28,437
Blending and other |  | 85,689 | 48,381
General and administrative |  | 40,804 | 34,268
Exploration and evaluation |  | 15,212 | 14,011
Depletion and depreciation |  | 464,580 | 486,380
Impairment (reversal) loss |  | (1,542,414) | 2,360,220
Share-based compensation |  | 11,130 | 9,469
Financing and interest |  | 111,159 | 125,441
Financial derivatives loss (gain) |  | 287,872 | (29,336)
Foreign exchange (gain) loss |  | (2,868) | 8,688
(Gain) loss on dispositions |  | (9,666) | (901)
Other income |  | (2,562) | (5,304)
Total expenses |  | (165,801) | 3,411,099
Net income (loss) before income taxes |  | 1,694,840 | (2,599,357)
Income tax (recovery) expense |  |  |
Current income tax expense |  | 1,272 | 574
Deferred income tax expense (recovery) |  | 79,968 | (160,967)
Income tax expense (recovery) |  | 81,240 | (160,393)
Net income (loss) |  | 1,613,600 | (2,438,964)
Additions to exploration and evaluation assets |  | 3,298 | 4,490
Additions to oil and gas properties |  | 310,005 | 275,850
Property acquisitions |  | 1,557 | 0
Proceeds from dispositions |  | $ (7,804) | $ (182)

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