Consolidated Balance Sheets - USD ($) $ in Millions		Dec. 31, 2017	Dec. 31, 2016
Investments:
Fixed maturity securities available for sale, at fair value (amortized cost – $8,756.5 in 2017 and $8,870.8 in 2016)		$ 9,662.6	$ 9,572.1
Equity securities available for sale, at fair value (cost – $316.3 in 2017 and $381.8 in 2016)		368.0	421.4
Commercial mortgage loans on real estate, at amortized cost		670.2	624.0
Short-term investments		284.1	227.7
Other investments		568.6	633.8
Total investments		11,553.5	11,479.0
Cash and cash equivalents		996.8	1,032.0
Premiums and accounts receivable, net		1,237.3	1,218.0
Reinsurance recoverables		9,790.2	9,083.2
Accrued investment income		105.4	110.1
Deferred acquisition costs		3,484.5	3,267.4
Property and equipment, at cost less accumulated depreciation		347.6	343.6
Tax receivable		126.3	20.5
Goodwill		917.7	830.9
Value of business acquired		24.4	32.1
Other intangible assets, net		288.6	240.3
Other assets		387.1	359.7
Assets held in separate accounts		1,837.1	1,692.3
Assets of consolidated investment entities	[1]	746.5	0.0
Total assets		31,843.0	29,709.1
Liabilities
Future policy benefits and expenses		10,397.4	10,112.9
Unearned premiums		7,038.6	6,626.5
Claims and benefits payable		3,782.2	3,301.2
Commissions payable		365.1	386.2
Reinsurance balances payable		145.3	95.3
Funds held under reinsurance		179.8	111.7
Deferred gain on disposal of businesses		128.1	232.2
Accounts payable and other liabilities		2,046.3	1,985.7
Debt		1,068.2	1,067.0
Liabilities related to separate accounts		1,837.1	1,692.3
Liabilities of consolidated investment entities	[1]	573.4	0.0
Total liabilities		27,561.5	25,611.0
Commitments and contingencies (Note 25)
Stockholders’ equity
Common stock, par value $0.01 per share, 800,000,000 shares authorized, 52,417,812 and 55,941,480 shares outstanding at December 31, 2017 and December 31, 2016, respectively		1.5	1.5
Additional paid-in capital		3,197.9	3,175.9
Retained earnings		5,697.3	5,296.7
Accumulated other comprehensive income		234.0	94.6
Treasury stock, at cost; 97,974,792 and 94,041,583 shares at December 31, 2017 and December 31, 2016, respectively		(4,860.1)	(4,470.6)
Total Assurant, Inc. stockholders’ equity		4,270.6	4,098.1
Non-controlling interest		10.9	0.0
Total equity		4,281.5	4,098.1
Total liabilities and equity		$ 31,843.0	$ 29,709.1

[1] The following table presents information on assets and liabilities related to consolidated investment entities as of December 31, 2017 (there were no such entities as of December 31, 2016).