SCHEDULE VI SUPPLEMENTAL INFORMATION FOR PROPERTY AND CASUALTY INSURANCE UNDERWRITERS (Details) - Other Operations - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
SUPPLEMENTAL INFORMATION FOR PROPERTY AND CASUALTY INSURANCE UNDERWRITERS
Deferred acquisition costs	$ 0.0	$ 0.0	$ 0.0
Reserves for Unpaid Claims and Claims Adjustment Expenses	0.0	0.0	0.0
Discount, if any, deducted in Column C	0.0	0.0	0.0
Unearned Premiums	0.0	0.0	0.0
Earned Premiums	1.0	7.5	8.7
Net investment income	0.0	0.2	0.2
Current Accident Year	1.1	8.6	10.4
Prior Accident Year	0.0	(0.6)	(2.2)
Amortization of deferred policy acquisition	0.1	2.2	3.4
Paid Claims and Claims Adjustment Expenses	0.0	8.8	10.4
Premiums written	$ 0.9	$ 6.5	$ 10.1