XML 224 R196.htm IDEA: XBRL DOCUMENT v3.20.4
Segments Disclosures - Reported Segment Earnings (Loss) and Segment Assets (Details) - CAD ($)
$ in Millions
 3 Months Ended 12 Months Ended
Dec. 31, 2019
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Disclosure of operating segments [line items]        
Revenues   $ 2,101 $ 2,347 $ 2,249
Fuel, carbon compliance and purchased power   968 1,086 1,100
Gross margin   1,133 1,261 1,149
Operations, maintenance and administration   472 475 515
Depreciation and amortization   654 590 574
Asset impairment   84 25 73
Gain on termination of Keephills 3 coal rights contract $ 88 0 88 0
Taxes, other than income taxes   33 29 31
Termination of Sundance B and CPPAs   0 56 157
Net other operating expense (income)   (11) (49) (47)
Operating income   (99) 335 160
Equity income from associate   1 0 0
Finance lease income   7 6 8
Net interest expense   (238) (179) (250)
Foreign exchange gain (loss)   17 (15) (15)
Gain on sale of assets and other   9 46 1
Earnings (loss) before income taxes   (303) 193 (96)
Contribution from equity accounted investments        
Disclosure of operating segments [line items]        
Revenues   (3)    
Fuel, carbon compliance and purchased power   0    
Gross margin   (3)    
Operations, maintenance and administration   0    
Depreciation and amortization   1    
Asset impairment   0    
Taxes, other than income taxes   0    
Net other operating expense (income)   0    
Operating income   (2)    
Equity income from associate   1    
Finance lease income   0    
Net interest expense   1    
Foreign exchange gain (loss)   0    
Gain on sale of assets and other   0    
Earnings (loss) before income taxes   0    
Operating segments        
Disclosure of operating segments [line items]        
Revenues   2,104    
Fuel, carbon compliance and purchased power   968    
Gross margin   1,136    
Operations, maintenance and administration   472    
Depreciation and amortization   655    
Asset impairment   84    
Taxes, other than income taxes   33    
Net other operating expense (income)   (11)    
Operating income   (97)    
Equity income from associate   0    
Finance lease income   7    
Net interest expense   (239)    
Foreign exchange gain (loss)   17    
Gain on sale of assets and other   9    
Earnings (loss) before income taxes   (303)    
Hydro | Operating segments        
Disclosure of operating segments [line items]        
Revenues   152 156 156
Fuel, carbon compliance and purchased power   8 7 6
Gross margin   144 149 150
Operations, maintenance and administration   37 36 38
Depreciation and amortization   28 32 30
Asset impairment   2 2 0
Gain on termination of Keephills 3 coal rights contract     0  
Taxes, other than income taxes   2 3 3
Termination of Sundance B and CPPAs     0 0
Net other operating expense (income)   0 0 0
Operating income   75 76 79
Equity income from associate   0    
Finance lease income   0 0 0
Wind and Solar | Operating segments        
Disclosure of operating segments [line items]        
Revenues   332 312 282
Fuel, carbon compliance and purchased power   25 16 17
Gross margin   307 296 265
Operations, maintenance and administration   53 50 50
Depreciation and amortization   136 124 110
Asset impairment   0 0 12
Gain on termination of Keephills 3 coal rights contract     0  
Taxes, other than income taxes   8 8 8
Termination of Sundance B and CPPAs     0 0
Net other operating expense (income)   0 (10) (6)
Operating income   110 124 91
Equity income from associate   0    
Finance lease income   0 0 0
North American Gas | Operating segments        
Disclosure of operating segments [line items]        
Revenues   217 209 232
Fuel, carbon compliance and purchased power   66 74 96
Gross margin   151 135 136
Operations, maintenance and administration   49 44 48
Depreciation and amortization   46 41 43
Asset impairment   0 0 0
Gain on termination of Keephills 3 coal rights contract     0  
Taxes, other than income taxes   2 1 1
Termination of Sundance B and CPPAs     0 0
Net other operating expense (income)   0 (1) 0
Operating income   54 50 44
Equity income from associate   0    
Finance lease income   5 6 8
Australian Gas | Operating segments        
Disclosure of operating segments [line items]        
Revenues   158 160 165
Fuel, carbon compliance and purchased power   10 9 8
Gross margin   148 151 157
Operations, maintenance and administration   32 37 37
Depreciation and amortization   43 48 49
Asset impairment   0 0 0
Gain on termination of Keephills 3 coal rights contract     0  
Taxes, other than income taxes   0 0 0
Termination of Sundance B and CPPAs     0 0
Net other operating expense (income)   0 0 0
Operating income   73 66 71
Equity income from associate   0    
Finance lease income   2 0 0
Alberta Thermal | Operating segments        
Disclosure of operating segments [line items]        
Revenues   619 816 912
Fuel, carbon compliance and purchased power   573 570 666
Gross margin   46 246 246
Operations, maintenance and administration   131 138 171
Depreciation and amortization   270 233 241
Asset impairment   75 15 38
Gain on termination of Keephills 3 coal rights contract     88  
Taxes, other than income taxes   15 13 13
Termination of Sundance B and CPPAs     56 157
Net other operating expense (income)   (11) (40) (41)
Operating income   (434) 31 (19)
Equity income from associate   0    
Finance lease income   0 0 0
Centralia | Operating segments        
Disclosure of operating segments [line items]        
Revenues   497 571 442
Fuel, carbon compliance and purchased power   279 416 314
Gross margin   218 155 128
Operations, maintenance and administration   60 67 61
Depreciation and amortization   105 83 74
Asset impairment   7 (10) 0
Gain on termination of Keephills 3 coal rights contract     0  
Taxes, other than income taxes   5 3 5
Termination of Sundance B and CPPAs     0 0
Net other operating expense (income)   0 0 0
Operating income   41 12 (12)
Equity income from associate   0    
Finance lease income   0 0 0
Energy Marketing | Operating segments        
Disclosure of operating segments [line items]        
Revenues   122 129 67
Fuel, carbon compliance and purchased power   0 0 0
Gross margin   122 129 67
Operations, maintenance and administration   30 30 24
Depreciation and amortization   2 2 2
Asset impairment   0 0 0
Gain on termination of Keephills 3 coal rights contract     0  
Taxes, other than income taxes   0 0 0
Termination of Sundance B and CPPAs     0 0
Net other operating expense (income)   0 0 0
Operating income   90 97 41
Equity income from associate   0    
Finance lease income   0 0 0
Corporate | Operating segments        
Disclosure of operating segments [line items]        
Revenues   7 (6) (7)
Fuel, carbon compliance and purchased power   7 (6) (7)
Gross margin   0 0 0
Operations, maintenance and administration   80 73 86
Depreciation and amortization   25 27 25
Asset impairment   0 18 23
Gain on termination of Keephills 3 coal rights contract     0  
Taxes, other than income taxes   1 1 1
Termination of Sundance B and CPPAs     0 0
Net other operating expense (income)   0 2 0
Operating income   (106) (121) (135)
Equity income from associate   0    
Finance lease income   $ 0 $ 0 $ 0