CONSOLIDATED BALANCE SHEET - USD ($) $ in Millions	Jun. 30, 2018	Dec. 31, 2017
Assets
Cash and due from banks (including segregated cash and other deposits)	$ 21,077	$ 23,775
Deposits with banks	179,825	156,741
Federal funds sold and securities borrowed or purchased under agreements to resell (including $169,113 and $132,949 as of June 30, 2018 and December 31, 2017, respectively, at fair value)	265,526	232,478
Brokerage receivables	36,977	38,384
Trading account assets (including $113,280 and $99,460 pledged to creditors at June 30, 2018 and December 31, 2017, respectively)	262,949	252,790
Investments:
Available-for-sale debt securities (including $7,901 and $9,493 pledged to creditors as of June 30, 2018 and December 31, 2017, respectively)	289,031	290,725
Held-to-maturity debt securities (including $1,094 and $435 pledged to creditors as of June 30, 2018 and December 31, 2017, respectively)	52,897	53,320
Equity securities (including $1,432 and $1,395 at fair value as of June 30, 2018 and December 31, 2017, respectively, of which $189 was available for sale as of December 31, 2017)	7,788
Equity securities (including $1,432 and $1,395 at fair value as of June 30, 2018 and December 31, 2017, respectively, of which $189 was available for sale as of December 31, 2017)		8,245
Total investments	349,716	352,290
Loans:
Loans, net of unearned income	671,180	667,034
Allowance for loan losses	(12,126)	(12,355)
Total loans, net	659,054	654,679
Goodwill	22,058	22,256
Intangible assets (other than MSRs)	4,729	4,588
Mortgage servicing rights (MSRs)	596	558
Other assets (including $21,703 and $18,559 as of June 30, 2018 and December 31, 2017, respectively, at fair value)	109,827	103,926
Total assets	1,912,334	1,842,465
Liabilities
Non-interest-bearing deposits in U.S. offices	117,473	126,880
Interest-bearing deposits in U.S. offices (including $334 and $303 as of June 30, 2018 and December 31, 2017, respectively, at fair value)	337,228	318,613
Non-interest-bearing deposits in offices outside the U.S.	86,241	87,440
Interest-bearing deposits in offices outside the U.S. (including $1,294 and $1,162 as of June 30, 2018 and December 31, 2017, respectively, at fair value)	455,788	426,889
Total deposits	996,730	959,822
Federal funds purchased and securities loaned or sold under agreements to repurchase (including $49,246 and $40,638 as of June 30, 2018 and December 31, 2017, respectively, at fair value)	177,828	156,277
Brokerage payables	67,672	61,342
Trading account liabilities	140,745	125,170
Short-term borrowings (including $4,093 and $4,627 as of June 30, 2018 and December 31, 2017, respectively, at fair value)	37,233	44,452
Long-term debt (including $35,462 and $31,392 as of June 30, 2018 and December 31, 2017, respectively, at fair value)	236,822	236,709
Other liabilities (including $17,819 and $13,961 as of June 30, 2018 and December 31, 2017, respectively, at fair value)	54,336	57,021
Total liabilities	1,711,366	1,640,793
Stockholders’ equity
Preferred stock ($1.00 par value; authorized shares: 30 million), issued shares: as of June 30, 2018—761,400 and as of December 31, 2017—770,120, at aggregate liquidation value	19,035	19,253
Common stock ($0.01 par value; authorized shares: 6 billion), issued shares: as of June 30, 2018—3,099,558,751 and as of December 31, 2017—3,099,523,273	31	31
Additional paid-in capital	107,724	108,008
Retained earnings	145,211	138,425
Treasury stock, at cost: June 30, 2018—582,953,339 shares and December 31, 2017—529,614,728 shares	(34,413)	(30,309)
Accumulated other comprehensive income (loss) (AOCI)	(37,494)	(34,668)
Total Citigroup stockholders’ equity	200,094	200,740
Noncontrolling interest	874	932
Total equity	200,968	201,672
Total liabilities and equity	1,912,334	1,842,465
Consumer
Loans:
Loans, net of unearned income	323,632	333,656
Allowance for loan losses	(9,796)	(9,869)
Corporate
Loans:
Loans, net of unearned income	347,548	333,378
Allowance for loan losses	(2,330)	(2,486)
Consolidated VIEs
Assets
Cash and due from banks (including segregated cash and other deposits)	46	52
Trading account assets (including $113,280 and $99,460 pledged to creditors at June 30, 2018 and December 31, 2017, respectively)	745	1,129
Investments:
Total investments	2,462	2,498
Loans:
Loans, net of unearned income	69,117	74,491
Allowance for loan losses	(1,903)	(1,930)
Total loans, net	67,214	72,561
Other assets (including $21,703 and $18,559 as of June 30, 2018 and December 31, 2017, respectively, at fair value)	171	154
Total assets	70,638	76,394
Liabilities
Short-term borrowings (including $4,093 and $4,627 as of June 30, 2018 and December 31, 2017, respectively, at fair value)	12,293	10,142
Long-term debt (including $35,462 and $31,392 as of June 30, 2018 and December 31, 2017, respectively, at fair value)	28,727	30,492
Other liabilities (including $17,819 and $13,961 as of June 30, 2018 and December 31, 2017, respectively, at fair value)	834	611
Total liabilities	41,854	41,245
Consolidated VIEs | Consumer
Loans:
Loans, net of unearned income	50,042	54,656
Consolidated VIEs | Corporate
Loans:
Loans, net of unearned income	$ 19,075	$ 19,835