Condensed Consolidated Balance Sheets (USD $) In Millions, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Current assets:
Cash and cash equivalents	$ 8,916	$ 9,429
Short-term investments	3,038	2,577
Accounts receivable, net	2,403	2,294
Other current receivables, net	2,145	2,255
Assets under management	2,737	2,708
Deferred income taxes	414	472
Prepaid expenses and other current assets	678	615
Total current assets	20,331	20,350
Long-term investments	17,227	16,166
Property, equipment and capitalized software, net	2,619	2,515
Goodwill	26,339	23,975
Other intangible assets, net	3,049	2,795
Other assets	2,135	2,088
Total assets	71,700	67,889
Current liabilities:
Medical costs payable	10,393	9,799
Accounts payable and accrued liabilities	6,579	6,853
Other policy liabilities	4,843	5,063
Current maturities of long-term debt	1,852	982
Unearned revenues	1,186	1,225
Total current liabilities	24,853	23,922
Long-term debt, less current maturities	11,146	10,656
Future policy benefits	2,445	2,445
Deferred income taxes and other liabilities	3,033	2,574
Total liabilities	41,477	39,597
Commitments and contingencies (Note 9)
Shareholders' equity:
Preferred stock, $0.001 par value - 10 shares authorized; no shares issued or outstanding	0	0
Common stock, $0.01 par value - 3,000 shares authorized; 1,024 and 1,039 issued and outstanding	10	10
Retained earnings	29,638	27,821
Accumulated other comprehensive income	575	461
Total shareholders' equity	30,223	28,292
Total liabilities and shareholders' equity	$ 71,700	$ 67,889