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Segmented information (Tables)

12 Months Ended

Dec. 31, 2022

Segment Reporting [Abstract]

Schedule of Results of Operations and Assets for Segments

			Year ended December 31, 2022
			Regulated Services Group						Renewable Energy Group						Corporate						Total
Revenue (1)(2)			$	2,328,536					$	350,939					$	—					$	2,679,475
Other revenue			55,732						28,447						1,501						85,680
Fuel, power and water purchased			824,670						41,826						—						866,496
Net revenue			1,559,598						337,560						1,501						1,898,659
Operating expenses			736,515						114,463						511						851,489
Administrative expenses			46,484						26,424						7,324						80,232
Depreciation and amortization			317,300						137,203						1,017						455,520
Asset impairment expense			—						159,568						—						159,568
Loss on foreign exchange			—						—						13,833						13,833
			459,299						(100,098)						(21,184)						338,017
Gain on sale of renewable assets			—						64,028						—						64,028
Operating income (loss)			459,299						(36,070)						(21,184)						402,045
Interest expense			(113,482)						(64,285)						(100,807)						(278,574)
Income (loss) from long-term investments			21,884						15,254						(502,344)						(465,206)
Other			(14,765)						(570)						(12,598)						(27,933)
Earnings (loss) before income taxes			$	352,936					$	(85,671)					$	(636,933)					$	(369,668)
Property, plant and equipment			$	8,554,938					$	3,360,687					$	29,260					$	11,944,885
Investments carried at fair value			1,984						1,342,223						—						1,344,207
Equity-method investees			56,199						310,103						15,500						381,802
Total assets			12,109,575						5,251,933						266,105						17,627,613
Capital expenditures			$	908,676					$	180,348					$	—					$	1,089,024

(1) Renewable Energy Group revenue includes $63,717 related to net hedging loss from energy derivative contracts and availability credits for the year ended December 31, 2022 that do not represent revenue recognized from contracts with customers.

(2) Regulated Services Group revenue includes $21,640 related to alternative revenue programs for the year ended December 31, 2022 that do not represent revenue recognized from contracts with customers.

21.Segmented information (continued)

			Year ended December 31, 2021
			Regulated Services Group						Renewable Energy Group						Corporate						Total
Revenue (1)(2)			$	1,944,171					$	256,633					$	—					$	2,200,804
Other revenue			53,441						18,339						1,558						73,338
Fuel and power purchased			682,602						31,313						—						713,915
Net revenue			1,315,010						243,659						1,558						1,560,227
Operating expenses			597,850						104,262						16						702,128
Administrative expenses			37,179						28,298						1,249						66,726
Depreciation and amortization			280,452						121,414						1,097						402,963
Loss on foreign exchange			—						—						4,371						4,371
			399,529						(10,315)						(5,175)						384,039
Gain on sale of renewable assets			—						29,063						—						29,063
Operating income (loss)			399,529						18,748						(5,175)						413,102
Interest expense			(93,411)						(71,598)						(44,545)						(209,554)
Income (loss) from long-term investments			18,306						84,046						(128,809)						(26,457)
Other			(24,177)						(2,956)						(7,726)						(34,859)
Earnings (loss) before income taxes			$	300,247					$	28,240					$	(186,255)					$	142,232
Property, plant and equipment			$	7,394,151					$	3,615,915					$	32,380					$	11,042,446
Investments carried at fair value			2,296						1,846,160						—						1,848,456
Equity-method investees			37,492						375,460						20,898						433,850
Total assets			10,524,466						6,123,888						149,149						16,797,503
Capital expenditures			$	998,855					$	338,637					$	7,553					$	1,345,045

(1) Renewable Energy Group revenue includes $57,018 related to net hedging loss from energy derivative contracts for the year ended December 31, 2021 that do not represent revenue recognized from contracts with customers.

(2) Regulated Services Group revenue includes $19,043 related to alternative revenue programs for the year ended December 31, 2021 that do not represent revenue recognized from contracts with customers.

Schedule of Information on Operations by Geographic Area

Information on operations by geographic area is as follows:

															2022						2021
Revenue
United States															$	2,232,959					$	1,790,539
Canada															175,005						157,854
Other regions															357,191						325,749
															$	2,765,155					$	2,274,142
Property, plant and equipment
United States															$	10,351,736					$	9,464,716
Canada															848,560						882,454
Other regions															744,589						695,276
															$	11,944,885					$	11,042,446
Intangible assets
United States															$	18,818					$	23,575
Canada															19,038						21,780
Other regions															58,827						59,761
															$	96,683					$	105,116

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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.

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