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ACCOUNTING FOR DERIVATIVES - DERIVATIVES WITH MASTER NETTING ARRANGEMENTS (Details) - Fixed indexed call options - USD ($) $ in Millions	Sep. 30, 2024	Dec. 31, 2023
Derivative [Line Items]
Gross amounts recognized	$ 373.6	$ 239.2
Gross amounts offset in the balance sheet	0.0	0.0
Net amounts of assets presented in the balance sheet	373.6	239.2
Non-cash collateral	97.9	37.0
Cash collateral received	0.0	0.0
Net amount	$ 275.7	$ 202.2

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