Consolidated Balance Sheets - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 6,097.2	$ 4,075.3
Investments available-for-sale, at fair value:
Fixed maturity securities (amortized cost of $18,269.0 and $16,991.8)	18,697.3	17,163.1
Equity securities (cost of $1,033.7 and $1,076.1)	1,452.6	1,468.5
Other invested assets, current	16.9	15.8
Accrued investment income	158.3	164.5
Premium and self-funded receivables	5,692.0	5,860.8
Other receivables	2,130.2	2,536.6
Income taxes receivable	0.0	168.7
Securities lending collateral	907.2	1,079.8
Other current assets	1,822.0	1,781.8
Total current assets	36,973.7	34,314.9
Long-term investments available-for-sale, at fair value:
Fixed maturity securities (amortized cost of $524.7 and $524.6)	533.3	524.4
Equity securities (cost of $27.3 and $27.2)	32.3	31.4
Other invested assets, long-term	2,442.1	2,240.5
Property and equipment, net	2,049.2	1,977.9
Goodwill	17,587.8	17,561.2
Other intangible assets	7,840.6	7,964.9
Other noncurrent assets	850.9	467.9
Total assets	68,309.9	65,083.1
Liabilities and shareholders' equity
Medical claims payable	7,963.9	7,892.6
Reserves for future policy benefits	72.1	71.8
Other policyholder liabilities	2,471.7	2,221.1
Total policy liabilities	10,507.7	10,185.5
Unearned income	1,950.2	971.9
Accounts payable and accrued expenses	4,454.2	4,014.9
Income taxes payable	187.5	0.0
Security trades pending payable	164.7	93.5
Securities lending payable	906.4	1,078.9
Short-term borrowings	1,180.0	440.0
Current portion of long-term debt	1,273.4	928.4
Other current liabilities	3,788.4	3,581.3
Total current liabilities	24,412.5	21,294.4
Long-term debt, less current portion	13,777.3	14,358.5
Reserves for future policy benefits, noncurrent	618.5	666.1
Deferred tax liabilities, net	2,609.3	2,779.9
Other noncurrent liabilities	944.0	883.8
Total liabilities	42,361.6	39,982.7
Commitment and contingencies – Note 11
Shareholders' equity
Preferred stock, without par value, shares authorized – 100,000,000; shares issued and outstanding – none	0.0	0.0
Common stock, par value $0.01, shares authorized – 900,000,000; shares issued and outstanding – 257,404,755 and 263,747,395	2.6	2.6
Additional paid-in capital	8,765.1	8,805.1
Retained earnings	17,306.6	16,560.6
Accumulated other comprehensive loss	(126.0)	(267.9)
Total shareholders' equity	25,948.3	25,100.4
Total liabilities and shareholders' equity	$ 68,309.9	$ 65,083.1