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v3.25.0.1

Credit and Other Debt Agreements - Note Purchase Agreements - Additional Information (Detail) - USD ($) $ in Millions | 1 Months Ended | 12 Months Ended
--- | --- | ---
Feb. 29, 2024 | Jun. 30, 2023 | Feb. 28, 2023 | Dec. 31, 2024
Series HH note [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt instrument, interest rate | 4.72% |  |  |
Debt instrument, maturity date | Feb. 13, 2024 |  |  |
Operating cash to fund | $ 100.0 |  |  |
Series H note [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt instrument, interest rate | 4.58% |  |  |
Debt instrument, maturity date | Feb. 27, 2024 |  |  |
Operating cash to fund | $ 325.0 |  |  |
Series N note [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt instrument, interest rate |  | 4.13% |  |
Debt instrument, maturity date |  | Jun. 24, 2023 |  |
Operating cash to fund |  | $ 200.0 |  |
Series CC note [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt instrument, maturity date |  | Jun. 13, 2024 |  |
Quarterly payments of interest, description |  | 90 day LIBOR |  |
Quarterly payments of interest rate |  | 1.40% |  |
Prepayment of debt |  | $ 50.0 |  |
Series E note [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt instrument, interest rate |  |  | 5.49% |
Debt instrument, maturity date |  |  | Feb. 10, 2023 |
Operating cash to fund |  |  | $ 50.0 |
Note Purchase Agreements [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Amount payable to redeem the notes, percent of the principal amount |  |  |  | 100.00%
Discount rate used to compute the remaining scheduled payments of principal and interest |  |  |  | U.S. Treasury yield plus 0.5

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