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Note 13. Debt (Details) $ in Thousands, ₨ in Billions	1 Months Ended	12 Months Ended
	Jun. 30, 2023 USD ($)	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2024 INR (₨)	Aug. 31, 2024 USD ($)	Aug. 31, 2024 INR (₨)	Feb. 29, 2024 USD ($)	Feb. 29, 2024 INR (₨)	Dec. 31, 2023 INR (₨)	Jul. 31, 2022 USD ($)
Long-term Debt [Abstract]
Long-term debt, gross		$ 464,550
Total debt principal		610,154	$ 560,827
Less: unamortized issuance costs		(376)	(521)
Total debt		609,778	560,306
Current portion of debt		236,424	96,238
Noncurrent portion of debt		$ 373,354	464,068
Short-term debt, weight-average interest rate		7.79%			7.79%
Interest Paid		$ 36,200	15,000	$ 11,600
Long-term Debt, Fiscal Year Maturity [Abstract]
Long-Term Debt, Maturity, Year One		90,899
Long-Term Debt, Maturity, Year Two		90,899
Long-Term Debt, Maturity, Year Three		90,950
Long-Term Debt, Maturity, Year Four		91,000
Long-Term Debt, Maturity, Year Five		100,802
Total long-term debt future principal payments		$ 464,550
Revolving Credit Facility
Long-term Debt [Abstract]
Debt Instrument, Currency		USD
Revolving Credit Facility		$ 0	0
Line of Credit Facility, Current Borrowing Capacity	$ 1,000,000
Debt Instrument, Description of Variable Rate Basis	Borrowing under the Revolving Credit Facility bears interest at a rate per annum equal to, at our option, (i) the Term Secured Overnight Financing Rate (“Term SOFR”), plus a credit spread of 0.10%, plus a margin that ranges from 1.25% to 2.25% or (ii) an alternate base rate as defined in the credit agreement, plus a margin that ranges from 0.25% to 1.25%
Revolving Credit Facility | Minimum [Member]
Long-term Debt [Abstract]
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage	0.125%
Revolving Credit Facility | Maximum [Member]
Long-term Debt [Abstract]
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage	0.375%
India Credit Facility
Long-term Debt [Abstract]
Debt Instrument, Currency		USD
Long-term debt, gross		$ 464,550	500,000
Long-term Debt, Fiscal Year Maturity [Abstract]
Total long-term debt future principal payments		$ 464,550	500,000
India Credit Facility | DFC
Long-term Debt [Abstract]
Debt Instrument, Description of Variable Rate Basis		U.S. Treasury Constant Maturity Yield plus 1.75%
Debt Instrument, Basis Spread on Variable Rate		1.75%
Long-term debt, weight-average interest rate		5.57%			5.57%
India Credit Facility | DFC | FS India Solar Ventures Private Limited
Long-term Debt [Abstract]
Line of Credit Facility, Current Borrowing Capacity											$ 500,000
India JPM Working Capital Facility
Long-term Debt [Abstract]
Debt Instrument, Currency		INR
Short-term debt		$ 28,490	60,827
India JPM Working Capital Facility | JPMorgan Chase Bank, N.A
Long-term Debt [Abstract]
Debt Instrument, Description of Variable Rate Basis		India Treasury bill rate plus 1.3%
Debt Instrument, Basis Spread on Variable Rate		1.30%
Short-term debt, weight-average interest rate		7.81%			7.81%
India JPM Working Capital Facility | JPMorgan Chase Bank, N.A | FS India Solar Ventures Private Limited
Long-term Debt [Abstract]
Line of Credit Facility, Current Borrowing Capacity			74,800							₨ 6.2
India HSBC Working Capital Facility
Long-term Debt [Abstract]
Debt Instrument, Currency		INR
Short-term debt		$ 69,097	0
India HSBC Working Capital Facility | Hong Kong and Shanghai Banking Corporation Limited
Long-term Debt [Abstract]
Debt Instrument, Description of Variable Rate Basis		India Treasury bill rate plus 1.5%
Debt Instrument, Basis Spread on Variable Rate		1.50%
Short-term debt, weight-average interest rate		7.96%			7.96%
India HSBC Working Capital Facility | Hong Kong and Shanghai Banking Corporation Limited | FS India Solar Ventures Private Limited
Long-term Debt [Abstract]
Line of Credit Facility, Current Borrowing Capacity								$ 98,400	₨ 8.2
India Citibank Working Capital Facility
Long-term Debt [Abstract]
Debt Instrument, Currency		INR
Short-term debt		$ 48,017	0
India Citibank Working Capital Facility | Citibank, N.A.
Long-term Debt [Abstract]
Debt Instrument, Description of Variable Rate Basis		India Treasury bill rate plus 1.1%
Debt Instrument, Basis Spread on Variable Rate		1.10%
Short-term debt, weight-average interest rate		7.53%			7.53%
India Citibank Working Capital Facility | Citibank, N.A. | FS India Solar Ventures Private Limited
Long-term Debt [Abstract]
Line of Credit Facility, Current Borrowing Capacity						$ 53,800	₨ 4.5
India Credit Agricole Working Capital Facility
Long-term Debt [Abstract]
Debt Instrument, Currency		INR
Short-term debt		$ 0	$ 0
India Credit Agricole Working Capital Facility | Credit Agricole Corporate and Investment Bank | FS India Solar Ventures Private Limited
Long-term Debt [Abstract]
Line of Credit Facility, Current Borrowing Capacity		$ 46,800			₨ 4.0

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Total debt principal

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Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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Amount of unamortized debt discount (premium) and debt issuance costs.

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Amount of cash paid for interest, including, but not limited to, capitalized interest and payment to settle zero-coupon bond attributable to accreted interest of debt discount and debt instrument with insignificant coupon interest rate in relation to effective interest rate of borrowing attributable to accreted interest of debt discount; classified as operating and investing activities.

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The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

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The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

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Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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