CONSOLIDATED BALANCE SHEET - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Assets
Cash and due from banks (including segregated cash and other deposits)	$ 26,349	$ 23,967
Deposits with banks, net of allowance	283,266	169,952
Securities borrowed and purchased under agreements to resell (including $185,204 and $153,193 as of December 31, 2020 and 2019, respectively, at fair value), net of allowance	294,712	251,322
Brokerage receivables, net of allowance	44,806	39,857
Trading account assets (including $168,967 and $120,236 pledged to creditors at December 31, 2020 and 2019, respectively)	375,079	276,140
Investments:
Available-for-sale debt securities (including $5,921 and $8,721 pledged to creditors as of December 31, 2020 and 2019, respectively), net of allowance	335,084	280,265
Held-to-maturity debt securities (including $547 and $1,923 pledged to creditors as of December 31, 2020 and 2019, respectively), net of allowance	104,943	80,775
Equity securities (including $1,066 and $1,162 as of December 31, 2020 and 2019, respectively, at fair value)	7,332	7,523
Total investments	447,359	368,563
Loans:
Loans, net of unearned income	675,883	699,483
Allowance for credit losses on loans (ACLL)	(24,956)	(12,783)
Total loans, net	650,927	686,700
Goodwill	22,162	22,126
Intangible assets (including MSRs of $336 and $495 as of December 31, 2020 and 2019, respectively, at fair value)	4,747	4,822
Other assets	110,683	107,709
Total assets	2,260,090	1,951,158
Liabilities
Non-interest-bearing deposits in U.S. offices	126,942	98,811
Interest-bearing deposits in U.S. offices (including $879 and $1,624 as of December 31, 2020 and 2019, respectively, at fair value)	503,213	401,418
Non-interest-bearing deposits in offices outside the U.S.	100,543	85,692
Interest-bearing deposits in offices outside the U.S. (including $1,079 and $695 as of December 31, 2020 and 2019, respectively, at fair value)	549,973	484,669
Total deposits	1,280,671	1,070,590
Securities loaned and sold under agreements to repurchase (including $60,206 and $40,651 as of December 31, 2020 and 2019, respectively, at fair value)	199,525	166,339
Brokerage payables	50,484	48,601
Trading account liabilities	168,027	119,894
Short-term borrowings (including $4,683 and $4,946 as of December 31, 2020 and 2019, respectively, at fair value)	29,514	45,049
Long-term debt (including $67,063 and $55,783 as of December 31, 2020 and 2019, respectively, at fair value)	271,686	248,760
Other liabilities (including $6,835 and $6,343 as of December 31, 2020 and 2019, respectively, at fair value), including allowance	59,983	57,979
Total liabilities	2,059,890	1,757,212
Stockholders’ equity
Preferred stock ($1.00 par value; authorized shares: 30 million), issued shares: 779,200 as of December 31, 2020 and 719,200 as of December 31, 2019, at aggregate liquidation value	19,480	17,980
Common stock ($0.01 par value; authorized shares: 6 billion), issued shares: 3,099,763,661 as of December 31, 2020 and 3,099,602,856 as of December 31, 2019	31	31
Additional paid-in capital	107,846	107,840
Retained earnings	168,272	165,369
Treasury stock, at cost: 1,017,674,452 shares as of December 31, 2020 and 985,479,501 shares as of December 31, 2019	(64,129)	(61,660)
Accumulated other comprehensive income (loss) (AOCI)	(32,058)	(36,318)
Total Citigroup stockholders’ equity	199,442	193,242
Noncontrolling interests	758	704
Total equity	200,200	193,946
Total liabilities and equity	2,260,090	1,951,158
Variable Interest Entity, Primary Beneficiary
Assets
Cash and due from banks (including segregated cash and other deposits)	281	108
Trading account assets (including $168,967 and $120,236 pledged to creditors at December 31, 2020 and 2019, respectively)	8,104	6,719
Investments:
Total investments	837	1,295
Loans:
Loans, net of unearned income	54,588	63,152
Allowance for credit losses on loans (ACLL)	(3,794)	(1,841)
Total loans, net	50,794	61,311
Other assets	43	73
Total assets	60,059	69,506
Liabilities
Short-term borrowings (including $4,683 and $4,946 as of December 31, 2020 and 2019, respectively, at fair value)	9,278	10,031
Long-term debt (including $67,063 and $55,783 as of December 31, 2020 and 2019, respectively, at fair value)	20,405	25,582
Other liabilities (including $6,835 and $6,343 as of December 31, 2020 and 2019, respectively, at fair value), including allowance	463	917
Total liabilities	30,146	36,530
Consumer
Loans:
Loans, net of unearned income	288,839	309,548
Allowance for credit losses on loans (ACLL)	(19,554)	(9,897)
Consumer | Variable Interest Entity, Primary Beneficiary
Loans:
Loans, net of unearned income	37,561	46,977
Corporate
Loans:
Loans, net of unearned income	387,044	389,935
Allowance for credit losses on loans (ACLL)	(5,402)	(2,886)
Corporate | Variable Interest Entity, Primary Beneficiary
Loans:
Loans, net of unearned income	$ 17,027	$ 16,175