Consolidated Balance Sheets - USD ($) $ in Millions	Sep. 30, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 4,260	$ 3,609
Fixed maturity securities, current (amortized cost of $17,504 and $17,055)	17,390	17,377
Equity securities, current	2,272	3,599
Other invested assets, current	21	17
Accrued investment income	163	163
Premiums Receivable, Net	4,312	3,605
Self-Funded Receivables, Net	2,631	2,580
Other receivables	2,374	2,267
Income taxes receivable	69	342
Securities lending collateral	741	455
Other current assets	2,875	2,249
Total current assets	37,108	36,263
Long-term investments available-for-sale, at fair value:
Fixed maturity securities (amortized cost of $501 and $555)	496	561
Equity securities	34	33
Other invested assets	3,572	3,344
Property and equipment, net	2,592	2,175
Goodwill	20,468	19,231
Other intangible assets	9,101	8,368
Other noncurrent assets	1,074	565
Total assets	74,445	70,540
Policy Liabilities
Medical claims payable	7,658	7,992
Reserves for future policy benefits	71	70
Other policyholder liabilities	2,929	2,950
Total policy liabilities	10,658	11,012
Unearned income	896	860
Accounts payable and accrued expenses	6,286	5,024
Security trades pending payable	168	113
Securities lending payable	741	454
Short-term borrowings	1,270	1,275
Current portion of long-term debt	849	1,275
Other current liabilities	3,306	3,343
Total current liabilities	24,174	23,356
Long-term debt, less current portion	17,300	17,382
Reserves for future policy benefits, noncurrent	669	647
Deferred tax liabilities, net	2,063	1,727
Other noncurrent liabilities	1,145	925
Total liabilities	45,351	44,037
Commitment and contingencies – Note 11
Shareholders' equity
Preferred stock, without par value, shares authorized – 100,000,000; shares issued and outstanding – none	0	0
Common stock, par value $0.01, shares authorized – 900,000,000; shares issued and outstanding – 258,931,814 and 256,084,913	3	3
Additional paid-in capital	9,720	8,547
Retained earnings	20,182	18,054
Accumulated other comprehensive loss	(811)	(101)
Total shareholders' equity	29,094	26,503
Total liabilities and shareholders' equity	$ 74,445	$ 70,540