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Segmented information (Tables)

12 Months Ended

Dec. 31, 2021

Segment Reporting [Abstract]

Schedule of Results of Operations and Assets for Segments

			Year ended December 31, 2021
			Regulated Services Group						Renewable Energy Group						Corporate						Total
Revenue (1)(2)			$	1,944,171					$	267,970					$	—					$	2,212,141
Other revenue			53,441						18,339						1,558						73,338
Fuel, power and water purchased			682,602						36,498						—						719,100
Net revenue			1,315,010						249,811						1,558						1,566,379
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
Gain on sale of renewable assets			—						(29,063)						—						(29,063)
Operating income			399,529						24,900						(5,175)						419,254
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)						(9,108)						(7,726)						(41,011)
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			10,512,799						6,123,888						149,149						16,785,836
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 and availability credits 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.

21.Segmented information (continued)

			Year ended December 31, 2020
			Regulated Services Group						Renewable Energy Group						Corporate						Total
Revenue (1)(2)			$	1,386,048					$	255,954					$	—					$	1,642,002
Other revenue			19,088						14,444						1,457						34,989
Fuel and power purchased			384,363						16,645						—						401,008
Net revenue			1,020,773						253,753						1,457						1,275,983
Operating expenses			442,851						73,957						12						516,820
Administrative expenses			36,749						25,743						630						63,122
Depreciation and amortization			219,089						92,890						2,144						314,123
Gain on foreign exchange			—						—						(2,108)						(2,108)
Operating income			322,084						61,163						779						384,026
Interest expense			(99,161)						(52,656)						(30,117)						(181,934)
Income from long-term investments			7,753						93,998						562,987						664,738
Other			(40,128)						(6,537)						(27,754)						(74,419)
Earnings before income taxes			$	190,548					$	95,968					$	505,895					$	792,411
Property, plant and equipment			$	5,757,532					$	2,451,706					$	32,600					$	8,241,838
Investments carried at fair value			—						1,839,212						—						1,839,212
Equity-method investees			74,673						110,414						1,365						186,452
Total assets			8,528,415						4,586,878						108,856						13,224,149
Capital expenditures			$	690,792					$	80,746					$	14,492					$	786,030

(1) Renewable Energy Group revenue includes $28,586 related to net hedging gain from energy derivative contracts for the year ended December 31, 2020 that do not represent revenue recognized from contracts with customers.

(2) Regulated Services Group revenue includes $24,928 related to alternative revenue programs for the year ended December 31, 2020 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:

															2021						2020
Revenue
United States															$	1,801,876					$	1,475,087
Canada															157,854						153,502
Other regions															325,749						48,402
															$	2,285,479					$	1,676,991
Property, plant and equipment
United States															$	9,464,716					$	6,666,015
Canada															882,454						884,195
Other regions															695,276						691,628
															$	11,042,446					$	8,241,838
Intangible assets
United States															$	23,575					$	24,825
Canada															21,780						23,123
Other regions															59,761						66,965
															$	105,116					$	114,913

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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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