Consolidated Statements of Cash Flows (Unaudited) (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011
Cash flows from operating activities:
Net income	$ 651	$ 1,128
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Net gain from securities transactions	(1,401)	(1,091)
Purchases of securities	(1,703)	(4,183)
Proceeds from sales of securities	6,889	4,150
Purchases to cover securities sold, not yet purchased	(5,160)	(3,895)
Proceeds from securities sold, not yet purchased	1,000	5,263
Changes in receivables and payables relating to securities transactions	(2,337)	1,149
Depreciation and amortization	411	333
Impairment	87	3
Deferred taxes	(168)	(3)
Other, net	(33)	10
Changes in cash held at consolidated affiliated partnerships and restricted cash	3,093	(560)
Changes in other operating assets and liabilities	39	(444)
Net cash provided by operating activities	1,368	1,860
Cash flows from investing activities:
Capital expenditures	(617)	(359)
Acquisitions of businesses, net of cash acquired	(1,348)	(126)
Proceeds from sale of investments	170	0
Purchases of investments	(210)	(150)
Other, net	29	5
Net cash used in investing activities	(1,976)	(630)
Cash flows from financing activities:
Investment segment distributions	(17)	(2,164)
Investment segment contributions	0	250
Partnership contributions	513	0
Partnership distributions	(31)	(39)
Proceeds from issuance of senior unsecured notes	1,030	0
Proceeds from other borrowings	172	612
Repayments of borrowings	(175)	(653)
Other, net	(38)	(20)
Net cash provided by (used in) financing activities	1,454	(2,014)
Effect of exchange rate changes on cash and cash equivalents	16	(10)
Net increase (decrease) in cash and cash equivalents	862	(794)
Net change in cash of assets held for sale	0	2
Cash and cash equivalents, beginning of period	2,278	2,963
Cash and cash equivalents, end of period	3,140	2,171
Supplemental information:
Cash payments for interest, net of amounts capitalized	387	368
Net cash payments for income taxes	185	53
Net unrealized (loss) gain on available-for-sale securities	(2)	2
Acquisition of non-controlling interest in CVR	$ 135	$ 0