CONSOLIDATED BALANCE SHEET - USD ($) $ in Millions	Sep. 30, 2018	Dec. 31, 2017
Assets
Cash and due from banks (including segregated cash and other deposits)	$ 25,727	$ 23,775
Deposits with banks	173,559	156,741
Federal funds sold and securities borrowed and purchased under agreements to resell (including $178,442 and $132,949 as of September 30, 2018 and December 31, 2017, respectively, at fair value)	280,941	232,478
Brokerage receivables	40,679	38,384
Trading account assets (including $107,753 and $99,460 pledged to creditors at September 30, 2018 and December 31, 2017, respectively)	257,502	252,790
Investments:
Available-for-sale debt securities (including $7,854 and $9,493 pledged to creditors as of September 30, 2018 and December 31, 2017, respectively)	284,782	290,725
Held-to-maturity debt securities (including $1,073 and $435 pledged to creditors as of September 30, 2018 and December 31, 2017, respectively)	53,249	53,320
Equity securities (including $1,388 and $1,395 at fair value as of September 30, 2018 and December 31, 2017, respectively, of which $189 was available for sale as of December 31, 2017)	7,482
Equity securities (including $1,388 and $1,395 at fair value as of September 30, 2018 and December 31, 2017, respectively, of which $189 was available for sale as of December 31, 2017)		8,245
Total investments	345,513	352,290
Loans:
Loans, net of unearned income	674,909	667,034
Allowance for loan losses	(12,336)	(12,355)
Total loans, net	662,573	654,679
Goodwill	22,187	22,256
Intangible assets (other than MSRs)	4,598	4,588
Mortgage servicing rights (MSRs)	618	558
Other assets (including $25,151 and $18,559 as of September 30, 2018 and December 31, 2017, respectively, at fair value)	111,268	103,926
Total assets	1,925,165	1,842,465
Liabilities
Non-interest-bearing deposits in U.S. offices	111,446	126,880
Interest-bearing deposits in U.S. offices (including $354 and $303 as of September 30, 2018 and December 31, 2017, respectively, at fair value)	351,291	318,613
Non-interest-bearing deposits in offices outside the U.S.	83,200	87,440
Interest-bearing deposits in offices outside the U.S. (including $1,086 and $1,162 as of September 30, 2018 and December 31, 2017, respectively, at fair value)	459,239	426,889
Total deposits	1,005,176	959,822
Federal funds purchased and securities loaned and sold under agreements to repurchase (including $48,148 and $40,638 as of September 30, 2018 and December 31, 2017, respectively, at fair value)	175,915	156,277
Brokerage payables	73,346	61,342
Trading account liabilities	147,652	125,170
Short-term borrowings (including $5,041 and $4,627 as of September 30, 2018 and December 31, 2017, respectively, at fair value)	33,770	44,452
Long-term debt (including $36,771 and $31,392 as of September 30, 2018 and December 31, 2017, respectively, at fair value)	235,270	236,709
Other liabilities (including $19,947 and $13,961 as of September 30, 2018 and December 31, 2017, respectively, at fair value)	56,173	57,021
Total liabilities	1,727,302	1,640,793
Stockholders’ equity
Preferred stock ($1.00 par value; authorized shares: 30 million), issued shares: as of September 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 September 30, 2018—3,099,567,177 and as of December 31, 2017—3,099,523,273	31	31
Additional paid-in capital	107,825	108,008
Retained earnings	148,436	138,425
Treasury stock, at cost: September 30, 2018—657,430,364 shares and December 31, 2017—529,614,728 shares	(39,678)	(30,309)
Accumulated other comprehensive income (loss) (AOCI)	(38,645)	(34,668)
Total Citigroup stockholders’ equity	197,004	200,740
Noncontrolling interest	859	932
Total equity	197,863	201,672
Total liabilities and equity	1,925,165	1,842,465
Consumer
Loans:
Loans, net of unearned income	325,469	333,656
Allowance for loan losses	(9,997)	(9,869)
Corporate
Loans:
Loans, net of unearned income	349,440	333,378
Allowance for loan losses	(2,339)	(2,486)
Consolidated VIEs
Assets
Cash and due from banks (including segregated cash and other deposits)	40	52
Trading account assets (including $107,753 and $99,460 pledged to creditors at September 30, 2018 and December 31, 2017, respectively)	722	1,129
Investments:
Total investments	2,276	2,498
Loans:
Loans, net of unearned income	66,649	74,491
Allowance for loan losses	(1,876)	(1,930)
Total loans, net	64,773	72,561
Other assets (including $25,151 and $18,559 as of September 30, 2018 and December 31, 2017, respectively, at fair value)	167	154
Total assets	67,978	76,394
Liabilities
Short-term borrowings (including $5,041 and $4,627 as of September 30, 2018 and December 31, 2017, respectively, at fair value)	12,307	10,142
Long-term debt (including $36,771 and $31,392 as of September 30, 2018 and December 31, 2017, respectively, at fair value)	27,625	30,492
Other liabilities (including $19,947 and $13,961 as of September 30, 2018 and December 31, 2017, respectively, at fair value)	748	611
Total liabilities	40,680	41,245
Consolidated VIEs | Consumer
Loans:
Loans, net of unearned income	48,678	54,656
Consolidated VIEs | Corporate
Loans:
Loans, net of unearned income	$ 17,971	$ 19,835