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Consolidated Statements of Operations - CAD CAD in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016
Income Statement [Abstract] |  |
Earnings Per Share, Diluted | CAD 0.47 | CAD 0.44
Revenue |  |
Regulated electricity distribution | CAD 989,221 | CAD 228,097
Regulated gas distribution | 493,208 | 405,735
Regulated water reclamation and distribution | 181,851 | 181,655
Non-regulated energy sales | 282,558 | 243,149
Other revenue | 30,971 | 37,382
Total revenue | 1,977,809 | 1,096,018
Expenses |  |
Operating expenses | 598,658 | 333,001
Regulated electricity purchased | 288,183 | 119,825
Regulated gas purchased | 184,523 | 142,003
Regulated water purchased | 12,310 | 12,227
Non-regulated energy purchased | 25,384 | 21,260
Administrative expenses | 64,466 | 46,349
Depreciation and amortization | 326,447 | 186,899
Loss (gain) on foreign exchange | 373 | (436)
Costs and Expenses, Total | 1,500,344 | 861,128
Operating income | 477,465 | 234,890
Interest expense on long-term debt and others | 184,993 | 73,962
Interest expense on convertible debentures and amortization of acquisition financing (notes 9(b) and 14) | 17,638 | 57,630
Interest, dividend, equity and other income | (11,989) | (10,573)
Other losses (gains) (note 23(a)) | 632 | (11,818)
Acquisition-related costs | 62,777 | 12,028
Gain on derivative financial instruments (note 25(b)(iv)) | (2,626) | (15,849)
Nonoperating Income (Expense) | 251,425 | 105,380
Earnings (loss) before income taxes | 226,040 | 129,510
Income tax expense (note 20) |  |
Current | 9,908 | 8,461
Deferred | 85,286 | 28,675
Income tax expense | 95,194 | 37,136
Net earnings | 130,846 | 92,374
Net effect of non-controlling interests (note 19) | 62,248 | 38,550
Net earnings attributable to shareholders of Algonquin Power & Utilities Corp. | 193,094 | 130,924
Series A and D Preferred shares dividend (note 17) | 10,400 | 10,400
Net earnings attributable to common shareholders of Algonquin Power & Utilities Corp. | CAD 182,694 | CAD 120,524
Basic net earnings per share (CAD per share) | CAD 0.48 | CAD 0.44

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