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Debt Instrument, Convertible, Number of Trading Days Included in Average Price of Common Shares

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Number of New Credit Facilities

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Temporary Equity, Maximum Settlement Rate

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Temporary Equity, Price Per Share Included in Maximum Settlement Rate Calculation

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Temporary Equity, Share Purchase Contract, Interest Rate

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Temporary Equity, Threshold Appreciation Price Per Share

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Ratio applied to the conversion of debt instrument into equity with equity shares divided by debt principal amount.

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Face (par) amount of debt instrument at time of issuance.

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Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Weighted average interest rate of debt outstanding.

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Gross amount of debt extinguished.

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Amount of interest payable on debt, including, but not limited to, trade payables.

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Period remaining on line of credit facility before it terminates, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

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The cash inflow from the issuance of a long-term debt instrument which can be exchanged for a specified amount of another security, typically the entity's common stock, at the option of the issuer or the holder.

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Amount of cash outflow for payment of an obligation from a lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

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Price of a single share of a number of saleable stocks of a company.

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Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.

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Per share amount of par value or stated value of stock classified as temporary equity. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable.

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The number of securities classified as temporary equity that have been sold (or granted) to the entity's shareholders. Securities issued include securities outstanding and securities held in treasury. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. If convertible, the issuer does not control the actions or events necessary to issue the maximum number of shares that could be required to be delivered under the conversion option if the holder exercises the option to convert the stock to another class of equity. If the security is a warrant or a rights issue, the warrant or rights issue is considered to be temporary equity if the issuer cannot demonstrate that it would be able to deliver upon the exercise of the option by the holder in all cases. Includes stock with put option held by ESOP and stock redeemable by holder only in the event of a change in control of the issuer.

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Long-term debt - Additional Information (Detail)							1 Months Ended	3 Months Ended
Long-term debt - Additional Information (Detail)	Nov. 08, 2022 USD ($)	Aug. 01, 2022 USD ($)	Jul. 22, 2022 USD ($)	Apr. 30, 2022 USD ($)	Apr. 29, 2022 USD ($)	Jan. 18, 2022 USD ($)	Jun. 30, 2021 USD ($) business_unit $ / shares shares	Mar. 17, 2023 USD ($)	Dec. 31, 2022 USD ($) $ / shares	Dec. 31, 2022 CAD ($)	Jun. 24, 2022 USD ($)	Apr. 29, 2022 creditFacility	Apr. 29, 2022 extension_period	Feb. 15, 2022 CAD ($)	Jan. 18, 2022 CAD ($)	Dec. 31, 2021 USD ($)	Dec. 20, 2021 USD ($)	Apr. 09, 2021 CAD ($) $ / shares	Feb. 15, 2021 CAD ($)
Debt Instrument [Line Items]
Short-term debt									$ 705,386,000
Liquidity available under the facilities									2,515,600,000							$ 2,050,200,000
Letters of credit issued									$ 465,200,000							317,200,000
Green Equity Units issued (in shares) \| shares							23,000,000
Green Equity Units, stated value (in USD per share) \| (per share)									$ 50
Green Equity Units, beneficial ownership interest in remarketable senior note (percent)							5.00%
Green Equity Units, annual distributions (percent)							7.75%
Green Equity Units, share purchase contract, interest rate (percent)							6.57%
Contract adjustment payments, excluding interest							$ 222,378,000		$ 222,378,000
Number of trading days included in average price of common shares \| business_unit							20
Debt instrument, convertible debt, conversion ration to common shares							2.7778
Green Equity Unit, threshold appreciation price per share (in USD per share) \| $ / shares							$ 18
Green Equity Units, maximum settlement rate under the purchase contracts							3.3333
Green Equity Units, price per share included in maximum settlement rate calculation (in USD per share) \| $ / shares							$ 15
Share price (in USD per share) \| $ / shares																		$ 999.92
Debt instrument, effective interest rate						4.95%									4.95%
Debt instrument, term						10 years
Interest on long-term debt									$ 70,274,000							$ 49,806,000
Senior unsecured revolving credit facilities \| Regulated Services Credit Facility
Debt Instrument [Line Items]
Par value					$ 1,000,000,000
Senior Unsecured Debentures Due February 2050
Debt Instrument [Line Items]
Par value																		$ 1,000
Junior Subordinated Notes Series 2022-B Due January 18, 2082
Debt Instrument [Line Items]
Par value						$ 750,000,000
Interest rate (percent)						4.75%									4.75%
Junior Subordinated Notes Series 2022-A Due January 18, 2082
Debt Instrument [Line Items]
Par value						$ 320,000,000									$ 400,000,000
Interest rate (percent)						5.25%									5.25%
Senior Unsecured Notes
Debt Instrument [Line Items]
Debt repaid upon maturity		$ 115,000		$ 80,000,000
Senior Unsecured Notes \| Subsequent Event
Debt Instrument [Line Items]
Debt repaid upon maturity								$ 15,000,000
Senior Unsecured Notes \| Senior Unsecured Syndicated Revolving Credit Facility Maturing On July 12, 2024
Debt Instrument [Line Items]
Weighted average coupon									1.18%	1.18%
Senior Unsecured Notes \| Senior unsecured revolving credit facilities \| Regulated Services Credit Facility
Debt Instrument [Line Items]
Par value					$ 500,000,000						$ 25,000,000
Line of Credit Facility, Expiration Period					1 year
Senior Unsecured Notes \| Senior unsecured revolving credit facilities \| Renewable Energy Group
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity			$ (500,000,000)
Line of Credit Facility, Expiration Period			1 year
Senior Unsecured Notes \| Senior unsecured bank credit facilities \| Regulated Services Group
Debt Instrument [Line Items]
Par value																	$ 1,100,000,000
Senior Unsecured Notes \| U.S. Dollar Senior Unsecured Notes (Green Equity Units)
Debt Instrument [Line Items]
Par value									$ 1,150,000,000
Proceeds from green equity units							$ 1,150,000,000
Weighted average coupon							1.18%		1.18%	1.18%
Senior Unsecured Notes \| Canadian dollar Senior unsecured notes
Debt Instrument [Line Items]
Par value										$ 1,200,000,000				$ 200,000					$ 150,000
Weighted average coupon									3.68%	3.68%
Senior Unsecured Notes \| Senior Unsecured Debentures Due February 2050
Debt Instrument [Line Items]
Par value																		$ 400,000
Interest rate (percent)																		2.85%
Senior Unsecured Notes \| Short-Term Debt \| Senior unsecured revolving credit facilities \| Regulated Services Credit Facility
Debt Instrument [Line Items]
Par value					$ 500,000,000
Senior Debt \| Canadian dollar Senior unsecured notes
Debt Instrument [Line Items]
Par value							$ 1,000
Revolving Credit Facility \| Senior Unsecured Notes \| Senior Unsecured Syndicated Revolving Credit Facility Maturing On July 12, 2024 \| Bermuda Credit Facility
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity									$ (75,000,000)
Letter of Credit \| Renewable Energy Group
Debt Instrument [Line Items]
Letters of credit issued			$ 250,000,000
Lines of credit	$ 350,000
Line of Credit \| Senior Unsecured Notes \| Senior unsecured revolving credit facilities \| Regulated Services Credit Facility
Debt Instrument [Line Items]
Number of new credit facilities												2	2