Fair Value of Financial Instruments [Line Items]

No definition available.

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- Definition

Long-term Investments, Fair Value

+ References

No definition available.

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- Definition

Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
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- Definition

Fair value portion of borrowing which can be exchanged for a specified number of another security at the option of the issuer or the holder, for example, but not limited to, the entity's common stock.

+ References

No definition available.

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- Definition

Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and not elected to be offset.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 20
-Section 55
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- Definition

Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities not subject to a master netting arrangement and not elected to be offset.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 20
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- Definition

Fair value of financial and nonfinancial obligations.

+ References

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- Definition

The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

+ References

No definition available.

+ Details

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- Definition

Fair value portion of shares that an entity is required to redeem for cash or other assets at a fixed or determinable date or upon the occurrence of an event.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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-Topic 480
-SubTopic 10
-Section 25
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- Definition

Fair value portion of an agreement for an unconditional promise by the maker to pay the holder a definite sum of money at a future date.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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Financial instruments - Fair Value of Financial Instruments (Detail) $ in Thousands, $ in Thousands	Dec. 31, 2019 USD ($)	Dec. 31, 2019 CAD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2018 CAD ($)
Commodity contracts for regulatory operations
Fair Value of Financial Instruments [Line Items]
Derivative financial instruments, liabilities	$ 2,899
Cross currency swap \| Net Investment Hedging
Fair Value of Financial Instruments [Line Items]
Derivative financial instruments, liabilities	81,765
Level 1
Fair Value of Financial Instruments [Line Items]
Long-term investments carried at fair value	1,178,581			$ 814,530
Total financial assets	1,178,581		$ 814,530
Long-term debt	1,495,153		768,400
Convertible debentures	623		639
Total financial liabilities	1,495,776		769,039
Level 2
Fair Value of Financial Instruments [Line Items]
Long-term investments carried at fair value	27,072			0
Development loans and other receivables	37,984		110,019
Derivative Asset	16		970
Total financial assets	65,072		110,989
Long-term debt	2,788,915		2,588,373
Convertible debentures	0
Derivative financial instruments, liabilities	83,837		102,785
Total financial liabilities	2,887,872		2,704,861
Level 2 \| Energy contracts \| Not designated as a hedge
Fair Value of Financial Instruments [Line Items]
Derivative Asset		$ 0
Level 2 \| Foreign exchange forward \| Not designated as a hedge
Fair Value of Financial Instruments [Line Items]
Derivative Asset				869
Level 2 \| Commodity contracts for regulatory operations
Fair Value of Financial Instruments [Line Items]
Derivative Asset	16		101
Derivative financial instruments, liabilities	2,072		1,114
Level 2 \| Cross currency swap \| Designated as a hedge \| Net Investment Hedging
Fair Value of Financial Instruments [Line Items]
Derivative financial instruments, liabilities	81,765		93,198
Level 2 \| Interest rate swaps \| Designated as a hedge
Fair Value of Financial Instruments [Line Items]
Derivative financial instruments, liabilities			8,473
Level 2 \| Series C Preferred Stock
Fair Value of Financial Instruments [Line Items]
Convertible debentures			13,703
Preferred shares, Series C	15,120
Level 3
Fair Value of Financial Instruments [Line Items]
Long-term investments carried at fair value	88,494			0
Development loans and other receivables	0		0
Derivative Asset	85,688		61,838
Total financial assets	174,182		61,838
Derivative financial instruments, liabilities	827		57
Total financial liabilities	827		57
Level 3 \| Energy contracts \| Designated as a hedge \| Cash flow hedge
Fair Value of Financial Instruments [Line Items]
Derivative Asset	65,304		61,838
Derivative financial instruments, liabilities	789		57
Level 3 \| Energy contracts \| Not designated as a hedge
Fair Value of Financial Instruments [Line Items]
Derivative Asset		20,384
Derivative financial instruments, liabilities	38
Level 3 \| Commodity contracts for regulatory operations
Fair Value of Financial Instruments [Line Items]
Derivative Asset	0
Carrying amount
Fair Value of Financial Instruments [Line Items]
Long-term investments carried at fair value	1,294,147		814,530
Development loans and other receivables	37,050		103,696
Derivative Asset	85,704		62,808
Total financial assets	1,416,901		981,034
Long-term debt	3,931,868		3,336,795
Convertible debentures	342		470
Derivative financial instruments, liabilities	84,664		102,842
Total financial liabilities	4,030,667		3,453,525
Carrying amount \| Energy contracts \| Designated as a hedge \| Cash flow hedge
Fair Value of Financial Instruments [Line Items]
Derivative Asset	65,304		61,838
Derivative financial instruments, liabilities	789		57
Carrying amount \| Energy contracts \| Not designated as a hedge
Fair Value of Financial Instruments [Line Items]
Derivative Asset		20,384
Derivative financial instruments, liabilities	38
Carrying amount \| Foreign exchange forward \| Not designated as a hedge
Fair Value of Financial Instruments [Line Items]
Derivative Asset				869
Carrying amount \| Commodity contracts for regulatory operations
Fair Value of Financial Instruments [Line Items]
Derivative Asset	16		101
Derivative financial instruments, liabilities	2,072		1,114
Carrying amount \| Cross currency swap \| Designated as a hedge \| Net Investment Hedging
Fair Value of Financial Instruments [Line Items]
Derivative financial instruments, liabilities	81,765		93,198
Carrying amount \| Interest rate swaps \| Designated as a hedge
Fair Value of Financial Instruments [Line Items]
Derivative financial instruments, liabilities			8,473
Carrying amount \| Series C Preferred Stock
Fair Value of Financial Instruments [Line Items]
Convertible debentures			13,418
Preferred shares, Series C	13,793
Fair value
Fair Value of Financial Instruments [Line Items]
Long-term investments carried at fair value	1,294,147		814,530
Development loans and other receivables	37,984		110,019
Derivative Asset	85,704		62,808
Total financial assets	1,417,835		987,357
Long-term debt	4,284,068		3,356,773
Convertible debentures	623		639
Derivative financial instruments, liabilities	84,664		102,842
Total financial liabilities	4,384,475		3,473,957
Fair value \| Energy contracts \| Designated as a hedge \| Cash flow hedge
Fair Value of Financial Instruments [Line Items]
Derivative Asset	65,304		61,838
Derivative financial instruments, liabilities	789		57
Fair value \| Energy contracts \| Not designated as a hedge
Fair Value of Financial Instruments [Line Items]
Derivative Asset		$ 20,384
Derivative financial instruments, liabilities	38
Fair value \| Foreign exchange forward \| Not designated as a hedge
Fair Value of Financial Instruments [Line Items]
Derivative Asset				$ 869
Fair value \| Commodity contracts for regulatory operations
Fair Value of Financial Instruments [Line Items]
Derivative Asset	16		101
Derivative financial instruments, liabilities	2,072		1,114
Fair value \| Cross currency swap \| Designated as a hedge \| Net Investment Hedging
Fair Value of Financial Instruments [Line Items]
Derivative financial instruments, liabilities	81,765		93,198
Fair value \| Interest rate swaps \| Designated as a hedge
Fair Value of Financial Instruments [Line Items]
Derivative financial instruments, liabilities			8,473
Fair value \| Series C Preferred Stock
Fair Value of Financial Instruments [Line Items]
Convertible debentures			13,703
Preferred shares, Series C	$ 15,120
Intrinsic Value \| Commodity contracts for regulatory operations
Fair Value of Financial Instruments [Line Items]
Derivative Asset			$ 441