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Segmented information - Results of Operations and Assets for Segments (Detail) - CAD CAD in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016
Revenue |  |
Revenue | CAD 1,977,809 | CAD 1,096,018
Fuel, power and water purchased | 510,400 | 295,315
Net revenue | 1,467,409 | 800,703
Operating expenses | 598,658 | 333,001
Administrative expenses | 64,466 | 46,349
Depreciation and amortization | 326,447 | 186,899
Gain on foreign exchange | 373 | (436)
Operating income | 477,465 | 234,890
Interest expense | 202,631 | 131,592
Interest, dividend, equity and other income | (11,989) | (10,573)
Other expenses (gain) | 60,783 | (15,639)
Earnings (loss) before income taxes | 226,040 | 129,510
Property, plant and equipment | 7,909,493 | 4,889,946
Equity-method investees | 40,479 | 64,419
Total assets | 10,533,635 | 8,249,460
Capital expenditures | 740,023 | 405,743
Liberty Power Group |  |
Revenue |  |
Revenue | 300,173 | 265,949
Fuel, power and water purchased | 25,384 | 21,260
Net revenue | 274,789 | 244,689
Operating expenses | 86,675 | 72,346
Administrative expenses | 20,777 | 19,656
Depreciation and amortization | 103,038 | 80,094
Gain on foreign exchange | 0 | 0
Operating income | 64,299 | 72,593
Interest expense | 47,565 | 21,847
Interest, dividend, equity and other income | (3,723) | 32
Other expenses (gain) | 2,282 | (14,403)
Earnings (loss) before income taxes | 18,175 | 65,117
Property, plant and equipment | 2,818,697 | 2,455,336
Equity-method investees | 37,273 | 59,021
Total assets | 3,103,999 | 2,771,651
Capital expenditures | 211,328 | 141,420
Liberty Utilities Group |  |
Revenue |  |
Revenue | 1,677,636 | 830,069
Fuel, power and water purchased | 485,016 | 274,055
Net revenue | 1,192,620 | 556,014
Operating expenses | 511,983 | 260,595
Administrative expenses | 42,900 | 26,272
Depreciation and amortization | 222,088 | 105,448
Gain on foreign exchange | 0 | 0
Operating income | 415,649 | 163,699
Interest expense | 126,790 | 50,671
Interest, dividend, equity and other income | (5,449) | (5,282)
Other expenses (gain) | (4,250) | (11,690)
Earnings (loss) before income taxes | 298,558 | 130,000
Property, plant and equipment | 5,047,454 | 2,390,047
Equity-method investees | 2,784 | 2,314
Total assets | 7,299,576 | 5,388,966
Capital expenditures | 528,695 | 264,323
Corporate |  |
Revenue |  |
Revenue | 0 | 0
Fuel, power and water purchased | 0 | 0
Net revenue | 0 | 0
Operating expenses | 0 | 60
Administrative expenses | 789 | 421
Depreciation and amortization | 1,321 | 1,357
Gain on foreign exchange | 373 | (436)
Operating income | (2,483) | (1,402)
Interest expense | 28,276 | 59,074
Interest, dividend, equity and other income | (2,817) | (5,323)
Other expenses (gain) | 62,751 | 10,454
Earnings (loss) before income taxes | (90,693) | (65,607)
Property, plant and equipment | 43,342 | 44,563
Equity-method investees | 422 | 3,084
Total assets | 130,060 | 88,843
Capital expenditures | CAD 0 | CAD 0

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