CONSOLIDATED BALANCE SHEET - USD ($) $ in Millions	Mar. 31, 2018	Dec. 31, 2017
Assets
Cash and due from banks (including segregated cash and other deposits)	$ 21,850	$ 23,775
Deposits with banks	180,854	156,741
Federal funds sold and securities borrowed or purchased under agreements to resell (including $161,537 and $132,949 as of March 31, 2018 and December 31, 2017, respectively, at fair value)	257,887	232,478
Brokerage receivables	46,572	38,384
Trading account assets (including $107,399 and $99,460 pledged to creditors at March 31, 2018 and December 31, 2017, respectively)	268,808	252,790
Investments:
Available-for-sale debt securities (including $14,312 and $9,493 pledged to creditors as of March 31, 2018 and December 31, 2017, respectively)	291,523	290,725
Held-to-maturity debt securities (including $1,063 and $435 pledged to creditors as of March 31, 2018 and December 31, 2017, respectively)	52,492	53,320
Equity securities (including $1,569 and $1,395 at fair value as of March 31, 2018 and December 31, 2017, respectively, of which $189 was available for sale as of December 31, 2017)	7,956
Equity securities (including $1,569 and $1,395 at fair value as of March 31, 2018 and December 31, 2017, respectively, of which $189 was available for sale as of December 31, 2017)		8,245
Total investments	351,971	352,290
Loans:
Loans, net of unearned income	672,938	667,034
Allowance for loan losses	(12,354)	(12,355)
Total loans, net	660,584	654,679
Goodwill	22,659	22,256
Intangible assets (other than MSRs)	4,450	4,588
Mortgage servicing rights (MSRs)	587	558
Other assets (including $20,443 and $18,559 as of March 31, 2018 and December 31, 2017, respectively, at fair value)	105,882	103,926
Total assets	1,922,104	1,842,465
Liabilities
Non-interest-bearing deposits in U.S. offices	125,332	126,880
Interest-bearing deposits in U.S. offices (including $300 and $303 as of March 31, 2018 and December 31, 2017, respectively, at fair value)	327,872	318,613
Non-interest-bearing deposits in offices outside the U.S.	90,477	87,440
Interest-bearing deposits in offices outside the U.S. (including $1,386 and $1,162 as of March 31, 2018 and December 31, 2017, respectively, at fair value)	457,538	426,889
Total deposits	1,001,219	959,822
Federal funds purchased and securities loaned or sold under agreements to repurchase (including $45,840 and $40,638 as of March 31, 2018 and December 31, 2017, respectively, at fair value)	171,759	156,277
Brokerage payables	69,685	61,342
Trading account liabilities	143,961	125,170
Short-term borrowings (including $4,467 and $4,627 as of March 31, 2018 and December 31, 2017, respectively, at fair value)	36,094	44,452
Long-term debt (including $33,571 and $31,392 as of March 31, 2018 and December 31, 2017, respectively, at fair value)	237,938	236,709
Other liabilities (including $15,552 and $13,961 as of March 31, 2018 and December 31, 2017, respectively, at fair value)	58,582	57,021
Total liabilities	1,719,238	1,640,793
Stockholders’ equity
Preferred stock ($1.00 par value; authorized shares: 30 million), issued shares: as of March 31, 2018—766,250 and as of December 31, 2017—770,120, at aggregate liquidation value	19,156	19,253
Common stock ($0.01 par value; authorized shares: 6 billion), issued shares: as of March 31, 2018—3,099,557,871 and as of December 31, 2017—3,099,523,273	31	31
Additional paid-in capital	107,599	108,008
Retained earnings	141,863	138,425
Treasury stock, at cost: March 31, 2018—549,624,378 shares and December 31, 2017—529,614,728 shares	(32,115)	(30,309)
Accumulated other comprehensive income (loss) (AOCI)	(34,619)	(34,668)
Total Citigroup stockholders’ equity	201,915	200,740
Noncontrolling interest	951	932
Total equity	202,866	201,672
Total liabilities and equity	1,922,104	1,842,465
Consumer
Loans:
Loans, net of unearned income	325,084	333,656
Allowance for loan losses	(10,039)	(9,869)
Corporate
Loans:
Loans, net of unearned income	347,854	333,378
Allowance for loan losses	(2,315)	(2,486)
Consolidated VIEs
Assets
Cash and due from banks (including segregated cash and other deposits)	34	52
Trading account assets (including $107,399 and $99,460 pledged to creditors at March 31, 2018 and December 31, 2017, respectively)	1,582	1,129
Investments:
Total investments	2,492	2,498
Loans:
Loans, net of unearned income	69,772	74,491
Allowance for loan losses	(1,923)	(1,930)
Total loans, net	67,849	72,561
Other assets (including $20,443 and $18,559 as of March 31, 2018 and December 31, 2017, respectively, at fair value)	159	154
Total assets	72,116	76,394
Liabilities
Short-term borrowings (including $4,467 and $4,627 as of March 31, 2018 and December 31, 2017, respectively, at fair value)	10,242	10,142
Long-term debt (including $33,571 and $31,392 as of March 31, 2018 and December 31, 2017, respectively, at fair value)	30,406	30,492
Other liabilities (including $15,552 and $13,961 as of March 31, 2018 and December 31, 2017, respectively, at fair value)	517	611
Total liabilities	41,165	41,245
Consolidated VIEs | Consumer
Loans:
Loans, net of unearned income	50,256	54,656
Consolidated VIEs | Corporate
Loans:
Loans, net of unearned income	$ 19,516	$ 19,835