NOTES PAYABLE - DIRECT CORPORATE OBLIGATIONS - SCHEDULE OF LONG-TERM DEBT INSTRUMENTS (Details) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Notes payable – direct corporate obligations	$ 990.1	$ 989.1
Unamortized debt issue costs	$ (9.9)	(10.9)
Senior Notes \| 5.250% Senior Notes due May 2025
Debt Instrument [Line Items]
Interest rate	5.25%
Notes payable – direct corporate obligations	$ 500.0	500.0
Senior Notes \| 5.250% Senior Notes due May 2029
Debt Instrument [Line Items]
Interest rate	5.25%
Notes payable – direct corporate obligations	$ 500.0	$ 500.0

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.

+ References

No definition available.

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Amount, before accumulated amortization, of debt issuance costs classified as noncurrent. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

+ References

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Including the current and noncurrent portions, aggregate carrying amount of all types of notes payable, as of the balance sheet date, with initial maturities beyond one year or beyond the normal operating cycle, if longer.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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