SIGNIFICANT TRANSACTIONS - Narrative (Details) $ in Millions	May 01, 2018 USD ($)
Business Combination Segment Allocation [Line Items]
Coinsurance basis percentage	100.00%
Ceding commissions for reinsurance	$ 422.4
Statutory reserves resulting from reinsurance business acquired	$ 13,200.0

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.

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