SCHEDULE II - CONDENSED FINANCIAL INFORMATION OF REGISTRANT - Derivative Financial Instruments (Details) - USD ($) $ in Millions	1 Months Ended	11 Months Ended	12 Months Ended
	Jan. 31, 2015	Dec. 31, 2015	Dec. 31, 2016	Dec. 31, 2014
Successor
Interest rate floor and reinsurance rate cap agreements
Combined liability for interest rate floor and reinsurance rate cap agreements		$ 18.2	$ 48.9
Unrealized gains (losses) on interest rate floor and reinsurance rate cap agreements		$ 3.8	$ (29.3)
Predecessor
Interest rate floor and reinsurance rate cap agreements
Unrealized gains (losses) on interest rate floor and reinsurance rate cap agreements	$ (15.9)			$ (4.1)