Consolidated Balance Sheets - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Investments [Abstract]
Fixed maturity securities, available-for-sale at fair value	$ 3,753.0	$ 4,028.9
Equity securities	72.4	92.5
Mortgage loans	142.2	183.5
Policy loans	18.9	19.1
Other invested assets	70.3	68.1
Total investments	4,056.8	4,392.1
Cash and cash equivalents	186.9	228.8
Accounts receivable, net	333.3	311.8
Recoverable from reinsurers	958.4	953.7
Deferred tax asset	2.2	2.7
Property, plant and equipment, net	223.4	223.7
Goodwill	112.0	112.5
Intangibles, net	220.1	221.7
Assets held for sale	0.0	323.3
Other assets	246.0	188.0
Total assets	6,339.1	6,958.3
Liabilities, temporary equity and stockholders’ equity
Life, accident and health reserves	4,593.9	4,567.1
Annuity reserves	235.4	236.4
Value of business acquired	215.1	221.1
Accounts payable and other current liabilities	334.4	306.2
Deferred tax liability	24.4	83.7
Debt obligations	686.0	773.6
Liabilities held for sale	0.0	153.9
Other liabilities	170.8	151.1
Total liabilities	6,260.0	6,493.1
Commitments and contingencies
Temporary equity
Preferred stock	10.3	10.3
Redeemable noncontrolling interest	8.3	11.3
Total temporary equity	18.6	21.6
Stockholders’ equity
Common stock	0.0	0.0
Additional paid-in capital	282.7	281.1
Treasury stock, at cost: 1,109,751 and 742,824 shares at March 31, 2020 and December 31, 2019, respectively	(4.2)	(3.3)
Accumulated deficit	(179.8)	(96.7)
Accumulated other comprehensive income (loss)	(84.6)	168.7
Total HC2 Holdings, Inc. stockholders’ equity	14.1	349.8
Noncontrolling interest	46.4	93.8
Total stockholders’ equity	60.5	443.6
Total liabilities, temporary equity and stockholders’ equity	$ 6,339.1	$ 6,958.3