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PROVISIONS - Summary (Details) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2021 CAD ($) | Dec. 31, 2020 CAD ($)
PROVISIONS |  |
Beginning balance | $ 10,582 | $ 9,307
Liabilities incurred | 412 | 1,173
Change in discount rate | (1,260) | 402
Changes in estimates | (101) | (334)
Liabilities settled | (321) | (242)
Accretion | 304 | 278
Asset disposals | (61) |
Foreign exchange |  | (2)
Ending balance | 9,555 | 10,582
Less: current portion | (779) | (527)
Non-current provisions | 8,776 | 10,055
Provisions for transportation expense before tax | 187 |
Provisions for transportation expense after tax | 142 |
Provisions For restructuring | 88 |
Decommissioning and Restoration |  |
PROVISIONS |  |
Beginning balance | 10,044 | 8,898
Liabilities incurred | 104 | 967
Change in discount rate | (1,260) | 402
Changes in estimates | (76) | (268)
Liabilities settled | (263) | (231)
Accretion | 304 | 278
Asset disposals | (61) |
Foreign exchange |  | (2)
Ending balance | 8,792 | 10,044
Less: current portion | (266) | (250)
Non-current provisions | 8,526 | 9,794
Total undiscounted amount of estimated future cash flows required | $ 13,800 | $ 14,100
Weighted average credit adjusted risk free interest rate | 3.70 | 3.10
Decommissioning and restoration provision settlement term | 50 years |
Royalties |  |
PROVISIONS |  |
Beginning balance | $ 71 | $ 133
Liabilities incurred | 137 | 16
Changes in estimates | (12) | (71)
Liabilities settled | 26 | (7)
Ending balance | 222 | 71
Less: current portion | (222) | (71)
Other |  |
PROVISIONS |  |
Beginning balance | 467 | 276
Liabilities incurred | 171 | 190
Changes in estimates | (13) | 5
Liabilities settled | (84) | (4)
Ending balance | 541 | 467
Less: current portion | (291) | (206)
Non-current provisions | $ 250 | $ 261

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