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Segmented information (Tables) | 12 Months Ended
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Dec. 31, 2017
Segment Reporting [Abstract] |
Results of Operations and Assets for Segments | The results of operations and assets for these segments are reflected in the tables below. The comparative information for 2016 has been reclassified to conform with the composition of the reporting segments presented in the current year.
| Year ended December 31, 2017
| Liberty Power Group |  | Liberty Utilities Group |  | Corporate |  | Total
Revenue | $ | 300,173 |  |  | $ | 1,677,636 |  |  | $ | — |  |  | $ | 1,977,809 |
Fuel, power and water purchased | 25,384 |  |  | 485,016 |  |  | — |  |  | 510,400 |
Net revenue | 274,789 |  |  | 1,192,620 |  |  | — |  |  | 1,467,409 |
Operating expenses | 86,675 |  |  | 511,983 |  |  | — |  |  | 598,658 |
Administrative expenses | 20,777 |  |  | 42,900 |  |  | 789 |  |  | 64,466 |
Depreciation and amortization | 103,038 |  |  | 222,088 |  |  | 1,321 |  |  | 326,447 |
Gain on foreign exchange | — |  |  | — |  |  | 373 |  |  | 373 |
Operating income | 64,299 |  |  | 415,649 |  |  | (2,483 | ) |  | 477,465 |
Interest expense | 47,565 |  |  | 126,790 |  |  | 28,276 |  |  | 202,631 |
Interest, dividend, equity and other income | (3,723 | ) |  | (5,449 | ) |  | (2,817 | ) |  | (11,989 | )
Other expenses (gain) | 2,282 |  |  | (4,250 | ) |  | 62,751 |  |  | 60,783 |
Earnings (loss) before income taxes | $ | 18,175 |  |  | $ | 298,558 |  |  | $ | (90,693 | ) |  | $ | 226,040 |
Property, plant and equipment | $ | 2,818,697 |  |  | $ | 5,047,454 |  |  | $ | 43,342 |  |  | $ | 7,909,493 |
Equity-method investees | 37,273 |  |  | 2,784 |  |  | 422 |  |  | 40,479 |
Total assets | 3,103,999 |  |  | 7,299,576 |  |  | 130,060 |  |  | 10,533,635 |
Capital expenditures | 211,328 |  |  | 528,695 |  |  | — |  |  | 740,023 |
22. | Segmented information (continued)
| Year ended December 31, 2016
| Liberty Power Group |  | Liberty Utilities Group |  | Corporate |  | Total
Revenue | $ | 265,949 |  |  | $ | 830,069 |  |  | $ | — |  |  | $ | 1,096,018 |
Fuel and power purchased | 21,260 |  |  | 274,055 |  |  | — |  |  | 295,315 |
Net revenue | 244,689 |  |  | 556,014 |  |  | — |  |  | 800,703 |
Operating expenses | 72,346 |  |  | 260,595 |  |  | 60 |  |  | 333,001 |
Administrative expenses | 19,656 |  |  | 26,272 |  |  | 421 |  |  | 46,349 |
Depreciation and amortization | 80,094 |  |  | 105,448 |  |  | 1,357 |  |  | 186,899 |
Gain on foreign exchange | — |  |  | — |  |  | (436 | ) |  | (436 | )
Operating income | 72,593 |  |  | 163,699 |  |  | (1,402 | ) |  | 234,890 |
Interest expense | 21,847 |  |  | 50,671 |  |  | 59,074 |  |  | 131,592 |
Interest, dividend and other income | 32 |  |  | (5,282 | ) |  | (5,323 | ) |  | (10,573 | )
Other expense (gain) | (14,403 | ) |  | (11,690 | ) |  | 10,454 |  |  | (15,639 | )
Earnings (loss) before income taxes | $ | 65,117 |  |  | $ | 130,000 |  |  | $ | (65,607 | ) |  | $ | 129,510 |
Property, plant and equipment | $ | 2,455,336 |  |  | $ | 2,390,047 |  |  | $ | 44,563 |  |  | $ | 4,889,946 |
Equity-method investees | 59,021 |  |  | 2,314 |  |  | 3,084 |  |  | 64,419 |
Total assets | 2,771,651 |  |  | 5,388,966 |  |  | 88,843 |  |  | 8,249,460 |
Capital expenditures | 141,420 |  |  | 264,323 |  |  | — |  |  | 405,743 |
Information on Operations by Geographic Area | Information on operations by geographic area is as follows:
| 2017 |  | 2016
Revenue |  |  |
Canada | $ | 95,326 |  |  | $ | 100,403 |
United States | 1,882,483 |  |  | 995,615 |
| $ | 1,977,809 |  |  | $ | 1,096,018 |
Property, plant and equipment |  |  |
Canada | $ | 568,693 |  |  | $ | 558,271 |
United States | 7,340,800 |  |  | 4,331,675 |
| $ | 7,909,493 |  |  | $ | 4,889,946 |
Intangible assets |  |  |
Canada | $ | 34,654 |  |  | $ | 36,611 |
United States | 29,454 |  |  | 28,378 |
| $ | 64,108 |  |  | $ | 64,989 |

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- Definition Tabular disclosure of information concerning material long-lived assets (excluding financial instruments, customer relationships with financial institutions, mortgage and other servicing rights, deferred policy acquisition costs, and deferred taxes assets) located in identified geographic areas and/or the amount of revenue from external customers attributed to that country from which revenue is material. An entity may also provide subtotals of geographic information about groups of countries. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e9038-108599 + Details
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- Definition Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8906-108599 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 25 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8813-108599 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8721-108599 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8736-108599 + Details
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