XML 170 R135.htm IDEA: XBRL DOCUMENT v3.22.4
Property, Plant, and Equipment - Reconciliation of the Changes in the Carrying Amount of PP&E (Details) - CAD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Disclosure of detailed information about property, plant and equipment [line items]    
Beginning of the period $ 5,320 $ 5,822
Additions 29 15
Disposals 5  
Transfer of assets (29) (1)
End of the period 5,556 5,320
Other work performed by entity and capitalised $ 16 $ 14
Weighted average rate 6.00% 6.00%
Cost    
Disclosure of detailed information about property, plant and equipment [line items]    
Beginning of the period $ 13,389 $ 13,398
Additions 897 479
Additions from development projects 29 1
Acquisitions   146
Disposals 220 79
Impairment (charges) reversals (62) (589)
Retirement of assets (39) (121)
Change in foreign exchange rates 153 (27)
Transfer of assets (6) (2)
Transfers in (out) of PP&E (24) 42
End of the period 14,012 13,389
Cost | Assets Held for Sale    
Disclosure of detailed information about property, plant and equipment [line items]    
Transfer of assets (31) 6
Accumulated depreciation    
Disclosure of detailed information about property, plant and equipment [line items]    
Beginning of the period (8,069) (7,576)
Depreciation 538 614
Disposals (212) (73)
Retirement of assets 33 112
Change in foreign exchange rates 102 (7)
Transfers in (out) of PP&E (5) 40
End of the period (8,456) (8,069)
Accumulated depreciation | Assets Held for Sale    
Disclosure of detailed information about property, plant and equipment [line items]    
Transfer of assets (3) 31
Assets under construction    
Disclosure of detailed information about property, plant and equipment [line items]    
Beginning of the period 184 495
End of the period 963 184
Assets under construction | Cost    
Disclosure of detailed information about property, plant and equipment [line items]    
Beginning of the period 184 495
Additions 891 477
Additions from development projects 17 1
Acquisitions   0
Disposals 0 2
Impairment (charges) reversals 2 (91)
Retirement of assets 0 0
Change in foreign exchange rates 13 0
Transfer of assets (138) (676)
Transfers in (out) of PP&E 16 5
End of the period 963 184
Assets under construction | Cost | Assets Held for Sale    
Disclosure of detailed information about property, plant and equipment [line items]    
Transfer of assets (22) (25)
Assets under construction | Accumulated depreciation    
Disclosure of detailed information about property, plant and equipment [line items]    
Beginning of the period 0 0
Depreciation 0 0
Disposals 0 0
Retirement of assets 0 0
Change in foreign exchange rates 0 0
Transfers in (out) of PP&E 0 0
End of the period 0 0
Assets under construction | Accumulated depreciation | Assets Held for Sale    
Disclosure of detailed information about property, plant and equipment [line items]    
Transfer of assets 0 0
Land    
Disclosure of detailed information about property, plant and equipment [line items]    
Beginning of the period 96 96
End of the period 93 96
Land | Cost    
Disclosure of detailed information about property, plant and equipment [line items]    
Beginning of the period 96 96
Additions 0 0
Additions from development projects 0 0
Acquisitions   0
Disposals 3 1
Impairment (charges) reversals 0 0
Retirement of assets 0 0
Change in foreign exchange rates 0 0
Transfer of assets 0 1
Transfers in (out) of PP&E 0 0
End of the period 93 96
Land | Cost | Assets Held for Sale    
Disclosure of detailed information about property, plant and equipment [line items]    
Transfer of assets 0 0
Land | Accumulated depreciation    
Disclosure of detailed information about property, plant and equipment [line items]    
Beginning of the period 0 0
Depreciation 0 0
Disposals 0 0
Retirement of assets 0 0
Change in foreign exchange rates 0 0
Transfers in (out) of PP&E 0 0
End of the period 0 0
Land | Accumulated depreciation | Assets Held for Sale    
Disclosure of detailed information about property, plant and equipment [line items]    
Transfer of assets 0 0
Hydro    
Disclosure of detailed information about property, plant and equipment [line items]    
Beginning of the period 399 399
End of the period 362 399
Hydro | Cost    
Disclosure of detailed information about property, plant and equipment [line items]    
Beginning of the period 867 846
Additions 0 0
Additions from development projects 0 0
Acquisitions   0
Disposals 0 0
Impairment (charges) reversals (21) (3)
Retirement of assets (9) (4)
Change in foreign exchange rates 0 0
Transfer of assets 27 27
Transfers in (out) of PP&E 0 0
End of the period 840 867
Hydro | Cost | Assets Held for Sale    
Disclosure of detailed information about property, plant and equipment [line items]    
Transfer of assets (9) 0
Hydro | Accumulated depreciation    
Disclosure of detailed information about property, plant and equipment [line items]    
Beginning of the period (468) (447)
Depreciation 21 24
Disposals 0 0
Retirement of assets 8 3
Change in foreign exchange rates 0 0
Transfers in (out) of PP&E 0 0
End of the period (478) (468)
Hydro | Accumulated depreciation | Assets Held for Sale    
Disclosure of detailed information about property, plant and equipment [line items]    
Transfer of assets (3) 0
Wind and Solar    
Disclosure of detailed information about property, plant and equipment [line items]    
Beginning of the period 2,183 1,777
End of the period 2,005 2,183
Wind and Solar | Cost    
Disclosure of detailed information about property, plant and equipment [line items]    
Beginning of the period 3,276 2,746
Additions 0 0
Additions from development projects 0 0
Acquisitions   146
Disposals 0 0
Impairment (charges) reversals (43) (12)
Retirement of assets (9) (11)
Change in foreign exchange rates 45 3
Transfer of assets 45 280
Transfers in (out) of PP&E (22) (4)
End of the period 3,233 3,276
Wind and Solar | Cost | Assets Held for Sale    
Disclosure of detailed information about property, plant and equipment [line items]    
Transfer of assets 0 0
Wind and Solar | Accumulated depreciation    
Disclosure of detailed information about property, plant and equipment [line items]    
Beginning of the period (1,093) (969)
Depreciation 130 130
Disposals 0 0
Retirement of assets 6 6
Change in foreign exchange rates 11 0
Transfers in (out) of PP&E 0 0
End of the period (1,228) (1,093)
Wind and Solar | Accumulated depreciation | Assets Held for Sale    
Disclosure of detailed information about property, plant and equipment [line items]    
Transfer of assets 0 0
Gas generation    
Disclosure of detailed information about property, plant and equipment [line items]    
Beginning of the period 1,909 1,877
End of the period 1,718 1,909
Gas generation | Cost    
Disclosure of detailed information about property, plant and equipment [line items]    
Beginning of the period 4,087 3,935
Additions 0 0
Additions from development projects 0 0
Acquisitions   0
Disposals 1 2
Impairment (charges) reversals 0 (2)
Retirement of assets (12) (57)
Change in foreign exchange rates (4) (25)
Transfer of assets 35 237
Transfers in (out) of PP&E 437 (5)
End of the period 4,530 4,087
Gas generation | Cost | Assets Held for Sale    
Disclosure of detailed information about property, plant and equipment [line items]    
Transfer of assets 0 0
Gas generation | Accumulated depreciation    
Disclosure of detailed information about property, plant and equipment [line items]    
Beginning of the period (2,178) (2,058)
Depreciation 308 184
Disposals (1) (1)
Retirement of assets 10 55
Change in foreign exchange rates 2 (8)
Transfers in (out) of PP&E 335 0
End of the period (2,812) (2,178)
Gas generation | Accumulated depreciation | Assets Held for Sale    
Disclosure of detailed information about property, plant and equipment [line items]    
Transfer of assets 0 0
Energy Transition    
Disclosure of detailed information about property, plant and equipment [line items]    
Beginning of the period 363 968
End of the period 230 363
Energy Transition | Cost    
Disclosure of detailed information about property, plant and equipment [line items]    
Beginning of the period 4,513 4,901
Additions 0 0
Additions from development projects 0 0
Acquisitions   0
Disposals 216 74
Impairment (charges) reversals 0 (468)
Retirement of assets (7) (49)
Change in foreign exchange rates 97 2
Transfer of assets 19 124
Transfers in (out) of PP&E (442) 46
End of the period 3,974 4,513
Energy Transition | Cost | Assets Held for Sale    
Disclosure of detailed information about property, plant and equipment [line items]    
Transfer of assets 0 31
Energy Transition | Accumulated depreciation    
Disclosure of detailed information about property, plant and equipment [line items]    
Beginning of the period (4,150) (3,933)
Depreciation 63 264
Disposals (211) (72)
Retirement of assets 7 48
Change in foreign exchange rates 89 2
Transfers in (out) of PP&E (340) 40
End of the period (3,744) (4,150)
Energy Transition | Accumulated depreciation | Assets Held for Sale    
Disclosure of detailed information about property, plant and equipment [line items]    
Transfer of assets 0 31
Capital spares and other    
Disclosure of detailed information about property, plant and equipment [line items]    
Beginning of the period 186 210
End of the period 185 186
Capital spares and other | Cost    
Disclosure of detailed information about property, plant and equipment [line items]    
Beginning of the period 366 379
Additions 6 2
Additions from development projects 12 0
Acquisitions   0
Disposals 0 0
Impairment (charges) reversals 0 (13)
Retirement of assets (2) 0
Change in foreign exchange rates 2 (7)
Transfer of assets 6 5
Transfers in (out) of PP&E (13) 0
End of the period 379 366
Capital spares and other | Cost | Assets Held for Sale    
Disclosure of detailed information about property, plant and equipment [line items]    
Transfer of assets 0 0
Capital spares and other | Accumulated depreciation    
Disclosure of detailed information about property, plant and equipment [line items]    
Beginning of the period (180) (169)
Depreciation 16 12
Disposals 0 0
Retirement of assets 2 0
Change in foreign exchange rates 0 (1)
Transfers in (out) of PP&E 0 0
End of the period (194) (180)
Capital spares and other | Accumulated depreciation | Assets Held for Sale    
Disclosure of detailed information about property, plant and equipment [line items]    
Transfer of assets 0 0
Decommissioning and restoration    
Disclosure of detailed information about property, plant and equipment [line items]    
Disposals 5  
Decommissioning and restoration | Cost    
Disclosure of detailed information about property, plant and equipment [line items]    
Revisions/additions to decommissioning and restoration costs (74) 135
Decommissioning and restoration | Assets under construction | Cost    
Disclosure of detailed information about property, plant and equipment [line items]    
Revisions/additions to decommissioning and restoration costs 0 0
Decommissioning and restoration | Land | Cost    
Disclosure of detailed information about property, plant and equipment [line items]    
Revisions/additions to decommissioning and restoration costs 0 0
Decommissioning and restoration | Hydro | Cost    
Disclosure of detailed information about property, plant and equipment [line items]    
Revisions/additions to decommissioning and restoration costs (15) 1
Decommissioning and restoration | Wind and Solar | Cost    
Disclosure of detailed information about property, plant and equipment [line items]    
Revisions/additions to decommissioning and restoration costs (59) 128
Decommissioning and restoration | Gas generation | Cost    
Disclosure of detailed information about property, plant and equipment [line items]    
Revisions/additions to decommissioning and restoration costs (12) 6
Decommissioning and restoration | Energy Transition | Cost    
Disclosure of detailed information about property, plant and equipment [line items]    
Revisions/additions to decommissioning and restoration costs 10 0
Decommissioning and restoration | Capital spares and other | Cost    
Disclosure of detailed information about property, plant and equipment [line items]    
Revisions/additions to decommissioning and restoration costs $ 2 $ 0