Consolidated Balance Sheets - USD ($) $ in Millions	Sep. 30, 2015	Dec. 31, 2014
Current assets:
Cash and cash equivalents	$ 1,547.8	$ 2,151.7
Investments available-for-sale, at fair value:
Fixed maturity securities (amortized cost of $17,807.3 and $17,120.4)	17,898.0	17,467.4
Equity securities (cost of $1,152.4 and $1,303.7)	1,515.9	1,906.6
Other invested assets, current	17.4	20.2
Accrued investment income	176.8	161.4
Premium and self-funded receivables	4,401.4	4,825.5
Other receivables	2,157.4	2,117.0
Income taxes receivable	0.0	308.9
Securities lending collateral	1,518.2	1,515.2
Deferred tax assets, net	428.5	280.4
Other current assets	1,878.0	1,473.9
Total current assets	31,539.4	32,228.2
Long-term investments available-for-sale, at fair value:
Fixed maturity securities (amortized cost of $563.5 and $500.7)	569.4	504.4
Equity securities (cost of $27.1 and $27.0)	30.3	31.5
Other invested assets, long-term	1,838.3	1,695.9
Property and equipment, net	1,930.8	1,944.3
Goodwill	17,550.6	17,082.0
Other intangible assets	8,215.5	7,958.1
Other noncurrent assets	661.3	512.3
Total assets	62,335.6	61,956.7
Liabilities and shareholders' equity
Medical claims payable	7,110.1	6,861.2
Reserves for future policy benefits	69.2	68.1
Other policyholder liabilities	2,493.1	2,626.5
Total policy liabilities	9,672.4	9,555.8
Unearned income	945.1	1,078.1
Accounts payable and accrued expenses	3,293.3	3,651.8
Income taxes payable	3.6	0.0
Security trades pending payable	110.0	66.2
Securities lending payable	1,518.6	1,515.3
Short-term borrowings	540.0	400.0
Current portion of long-term debt	0.0	624.3
Other current liabilities	2,282.8	1,861.2
Total current liabilities	18,365.8	18,752.7
Long-term debt, less current portion	15,719.6	14,019.6
Reserves for future policy benefits, noncurrent	616.0	671.3
Deferred tax liabilities, net	3,169.4	3,226.0
Other noncurrent liabilities	1,228.7	1,035.8
Total liabilities	$ 39,099.5	$ 37,705.4
Commitment and contingencies – Note 9
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 – 261,029,323 and 268,109,932	2.6	2.7
Additional paid-in capital	8,687.9	10,062.3
Retained earnings	14,761.8	14,014.4
Accumulated other comprehensive (loss) income	(216.2)	171.9
Total shareholders' equity	23,236.1	24,251.3
Total liabilities and shareholders' equity	$ 62,335.6	$ 61,956.7