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v3.25.2

NOTES PAYABLE - DIRECT CORPORATE OBLIGATIONS - SCHEDULE OF LONG-TERM DEBT INSTRUMENTS (Details) - USD ($) $ in Millions | Jun. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Debt Instrument [Line Items] |  |
Outstanding principal | $ 1,334.7 | $ 1,833.5
Unamortized debt issue costs | $ (13.2) | (14.3)
Senior Notes | 6.450% Senior Notes due June 2034 |  |
Debt Instrument [Line Items] |  |
Interest rate | 6.45% |
Outstanding principal | $ 700.0 | 700.0
Unamortized discount on 6.450% Senior Notes due June 2034 | $ (2.1) | (2.2)
Senior Notes | 5.250% Senior Notes due May 2029 |  |
Debt Instrument [Line Items] |  |
Interest rate | 5.25% |
Outstanding principal | $ 500.0 | 500.0
Senior Notes | 5.250% Senior Notes due May 2025 |  |
Debt Instrument [Line Items] |  |
Interest rate | 5.25% |
Outstanding principal | $ 0.0 | 500.0
Subordinated Debt | 5.125% Subordinated Debentures due 2060 |  |
Debt Instrument [Line Items] |  |
Interest rate | 5.125% |
Outstanding principal | $ 150.0 | $ 150.0

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