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NOTES PAYABLE - DIRECT CORPORATE OBLIGATIONS - REVOLVING CREDIT AGREEMENT (Details) - Line of Credit - USD ($) | Jul. 16, 2021 | Oct. 13, 2017 | May 19, 2015 | Dec. 31, 2024 | Jul. 15, 2021
--- | --- | --- | --- | --- | ---
Revolving Credit Facility |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Maximum borrowing capacity |  | $ 250,000,000.0 | $ 150,000,000.0 |  |
Debt Instrument, term |  |  | 4 years |  |
Initial drawing amount |  |  | $ 100,000,000.0 |  |
Total capitalization percentage | 15.00% |  |  |  |
Minimum consolidated net worth percentage | 25.00% |  |  |  | 50.00%
Potential additional borrowing capacity |  | $ 100,000,000.0 |  |  |
Debt covenant, required minimum debt to total capitalization ratio | 35.00% |  |  |  |
Debt covenant, actual debt to total capitalization ratio at period end |  |  |  | 30.50% |
Debt covenant, minimum required consolidated net worth, component one, amount | $ 2,674,000,000 |  |  |  |
Debt covenant, minimum required consolidated net worth, component two, as a percent of net equity proceeds received from issuance and sale of equity interests | 25.00% |  |  |  |
Debt covenant, actual consolidated net worth at period end |  |  |  | $ 3,869,800,000 |
Debt covenant, required minimum consolidated net worth, amount |  |  |  | $ 2,698,800,000 |
Revolving Credit Facility | Credit Spread Adjustment (SOFR) |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Basis spread on variable rate | 0.10% |  |  |  |
Revolving Credit Facility | Federal Funds Rate |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Basis spread on variable rate |  | 0.50% |  |  |
Revolving Credit Facility | One - Month Adjusted Term SOFR |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Basis spread on variable rate | 100.00% |  |  |  |
Revolving Credit Facility | Minimum |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Remaining borrowing capacity |  |  | 50,000,000.0 |  |
Revolving Credit Facility | Minimum | SOFR |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Basis spread on variable rate | 1.375% |  |  |  |
Revolving Credit Facility | Minimum | Base Rate |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Basis spread on variable rate | 0.375% |  |  |  |
Revolving Credit Facility | Maximum |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Remaining borrowing capacity |  | $ 100,000,000.0 |  |  |
Revolving Credit Facility | Maximum | SOFR |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Basis spread on variable rate | 2.125% |  |  |  |
Revolving Credit Facility | Maximum | Base Rate |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Basis spread on variable rate | 1.125% |  |  |  |
Bridge Loan |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Maximum borrowing capacity |  |  | 5,000,000.0 |  |
Letter of Credit |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Maximum borrowing capacity |  |  | $ 5,000,000.0 |  |

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- Definition 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. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -SubTopic 10 -Topic 210 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(16)(a)(2)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1 + Details
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