CONSOLIDATED BALANCE SHEET (USD $) In Millions, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Assets
Cash and due from banks (including segregated cash and other deposits)	$ 32,810	$ 36,453
Deposits with banks	172,659	102,134
Federal funds sold and securities borrowed or purchased under agreements to resell (including $175,015 and $160,589 as of September 30, 2013 and December 31, 2012, respectively, at fair value)	273,679	261,311
Brokerage receivables	24,976	22,490
Trading account assets	291,722	320,929
Investments	303,525	312,326
Loans, net of unearned income
Loans, net of unearned income	657,551	655,464
Allowance for loan losses	(20,605)	(25,455)
Total loans, net	636,946	630,009
Goodwill	25,098	25,673
Intangible assets (other than MSRs)	4,888	5,697
Mortgage servicing rights (MSRs)	2,580	1,942
Other assets	127,308	145,660
Assets of discontinued operations held for sale	3,320	36
Total assets	1,899,511	1,864,660
Liabilities
Non-interest-bearing deposits in U.S. offices	130,273	129,657
Interest-bearing deposits in U.S. offices (including $949 and $889 as of September 30, 2013 and December 31, 2012, respectively, at fair value)	266,322	247,716
Non-interest-bearing deposits in offices outside the U.S.	66,028	65,024
Interest-bearing deposits in offices outside the U.S. (including $698 and $558 as of September 30, 2013 and December 31, 2012, respectively, at fair value)	492,837	488,163
Total deposits	955,460	930,560
Federal funds purchased and securities loaned or sold under agreements to repurchase (including $119,427 and $116,689 as of September 30, 2013 and December 31, 2012, respectively, at fair value)	216,387	211,236
Brokerage payables	56,992	57,013
Trading account liabilities	122,048	115,549
Short-term borrowings	58,904	52,027
Long-term debt	221,593	239,463
Other liabilities	63,349	67,815
Liabilities of discontinued operations held for sale	2,039
Total liabilities	1,696,772	1,673,663
Stockholders' equity
Preferred stock ($1.00 par value; authorized shares: 30 million), issued shares: 209,720 as of September 30, 2013 and 102,038 as of December 31, 2012, at aggregate liquidation value	5,243	2,562
Common stock ($0.01 par value; authorized shares: 6 billion), issued shares: 3,062,096,040 as of September 30, 2013 and 3,043,153,204 as of December 31, 2012	31	30
Additional paid-in capital	107,030	106,391
Retained earnings	108,812	97,809
Treasury stock, at cost: September 30, 2013-29,095,963 shares and December 31, 2012-14,269,301 shares	(1,472)	(847)
Accumulated other comprehensive income (loss)	(18,798)	(16,896)
Total Citigroup stockholders' equity	200,846	189,049
Noncontrolling interests	1,893	1,948
Total equity	202,739	190,997
Total liabilities and equity	1,899,511	1,864,660
Consumer
Loans, net of unearned income
Loans, net of unearned income	387,822	408,671
Allowance for loan losses		(22,679)
Corporate
Loans, net of unearned income
Loans, net of unearned income	269,729	246,793
Allowance for loan losses		(2,776)
Consolidated VIEs
Assets
Cash and due from banks (including segregated cash and other deposits)	490	498
Trading account assets	911	481
Investments	10,781	10,751
Loans, net of unearned income
Loans, net of unearned income	90,056	117,620
Allowance for loan losses	(3,588)	(5,854)
Total loans, net	86,468	111,766
Other assets	1,484	674
Total assets	100,134	124,170
Liabilities
Short-term borrowings	21,987	15,637
Long-term debt	31,414	26,346
Other liabilities	1,190	1,224
Total liabilities	54,591	43,207
Consolidated VIEs | Consumer
Loans, net of unearned income
Loans, net of unearned income	61,932	93,936
Consolidated VIEs | Corporate
Loans, net of unearned income
Loans, net of unearned income	$ 28,124	$ 23,648