XML 143 R119.htm IDEA: XBRL DOCUMENT
v3.25.3

SECURITIZATIONS AND VARIABLE INTEREST ENTITIES - Schedule of Variable Interest Entities (Details) - USD ($) $ in Millions | Sep. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Variable Interest Entity |  |
Total involvement with SPE assets | $ 635,338 | $ 528,659
Consolidated VIE/SPE assets | 2,642,475 | 2,352,945
Significant unconsolidated VIE assets | 577,622 | 468,620
Funded Exposure |  |
Maximum exposure to loss in significant unconsolidated VIEs, debt investments | 70,083 | 64,618
Maximum exposure to loss in significant unconsolidated VIEs, equity investments | 3,502 | 3,483
Unfunded Exposure |  |
Maximum exposure to loss in significant unconsolidated VIEs, funding commitments | 19,640 | 16,351
Maximum exposure to loss in significant unconsolidated VIEs, guarantees and derivatives | 180 | 172
Funded and Unfunded Exposure |  |
Maximum exposure to loss in significant unconsolidated VIEs | 93,405 | 84,624
Private equity |  |
Variable Interest Entity |  |
Significant unconsolidated VIE assets | 125,100 | 45,500
Funded and Unfunded Exposure |  |
Maximum exposure to loss in significant unconsolidated VIEs | 1,191 | 824
Private equity |  |
Funded and Unfunded Exposure |  |
Maximum exposure to loss in significant unconsolidated VIEs | 9,100 | 8,100
Consolidated VIEs |  |
Variable Interest Entity |  |
Consolidated VIE/SPE assets | 57,716 | 60,039
Credit card securitizations |  |
Variable Interest Entity |  |
Total involvement with SPE assets | 27,489 | 29,746
Significant unconsolidated VIE assets | 0 | 0
Funded Exposure |  |
Maximum exposure to loss in significant unconsolidated VIEs, debt investments | 0 | 0
Maximum exposure to loss in significant unconsolidated VIEs, equity investments | 0 | 0
Unfunded Exposure |  |
Maximum exposure to loss in significant unconsolidated VIEs, funding commitments | 0 | 0
Maximum exposure to loss in significant unconsolidated VIEs, guarantees and derivatives | 0 | 0
Funded and Unfunded Exposure |  |
Maximum exposure to loss in significant unconsolidated VIEs | 0 | 0
Credit card securitizations | Consolidated VIEs |  |
Variable Interest Entity |  |
Consolidated VIE/SPE assets | 27,489 | 29,746
Mortgage securitizations - U.S. agency-sponsored |  |
Variable Interest Entity |  |
Total involvement with SPE assets | 123,762 | 120,568
Significant unconsolidated VIE assets | 123,762 | 120,568
Funded Exposure |  |
Maximum exposure to loss in significant unconsolidated VIEs, debt investments | 3,391 | 2,387
Maximum exposure to loss in significant unconsolidated VIEs, equity investments | 0 | 0
Unfunded Exposure |  |
Maximum exposure to loss in significant unconsolidated VIEs, funding commitments | 0 | 0
Maximum exposure to loss in significant unconsolidated VIEs, guarantees and derivatives | 115 | 123
Funded and Unfunded Exposure |  |
Maximum exposure to loss in significant unconsolidated VIEs | 3,506 | 2,510
Mortgage securitizations - U.S. agency-sponsored | Consolidated VIEs |  |
Variable Interest Entity |  |
Consolidated VIE/SPE assets | 0 | 0
Mortgage securitizations - Non-agency-sponsored |  |
Variable Interest Entity |  |
Total involvement with SPE assets | 66,430 | 62,378
Significant unconsolidated VIE assets | 66,430 | 62,378
Funded Exposure |  |
Maximum exposure to loss in significant unconsolidated VIEs, debt investments | 4,204 | 3,479
Maximum exposure to loss in significant unconsolidated VIEs, equity investments | 0 | 0
Unfunded Exposure |  |
Maximum exposure to loss in significant unconsolidated VIEs, funding commitments | 234 | 566
Maximum exposure to loss in significant unconsolidated VIEs, guarantees and derivatives | 0 | 0
Funded and Unfunded Exposure |  |
Maximum exposure to loss in significant unconsolidated VIEs | 4,438 | 4,045
Mortgage securitizations - Non-agency-sponsored | Consolidated VIEs |  |
Variable Interest Entity |  |
Consolidated VIE/SPE assets | 0 | 0
Citi-administered asset-backed commercial paper conduits |  |
Variable Interest Entity |  |
Total involvement with SPE assets | 19,037 | 21,306
Significant unconsolidated VIE assets | 0 | 0
Funded Exposure |  |
Maximum exposure to loss in significant unconsolidated VIEs, debt investments | 0 | 0
Maximum exposure to loss in significant unconsolidated VIEs, equity investments | 0 | 0
Unfunded Exposure |  |
Maximum exposure to loss in significant unconsolidated VIEs, funding commitments | 0 | 0
Maximum exposure to loss in significant unconsolidated VIEs, guarantees and derivatives | 0 | 0
Funded and Unfunded Exposure |  |
Maximum exposure to loss in significant unconsolidated VIEs | 0 | 0
Citi-administered asset-backed commercial paper conduits | Consolidated VIEs |  |
Variable Interest Entity |  |
Consolidated VIE/SPE assets | 19,037 | 21,306
Collateralized loan obligations (CLOs) |  |
Variable Interest Entity |  |
Total involvement with SPE assets | 731 | 3,920
Significant unconsolidated VIE assets | 731 | 3,920
Funded Exposure |  |
Maximum exposure to loss in significant unconsolidated VIEs, debt investments | 227 | 2,019
Maximum exposure to loss in significant unconsolidated VIEs, equity investments | 0 | 0
Unfunded Exposure |  |
Maximum exposure to loss in significant unconsolidated VIEs, funding commitments | 0 | 0
Maximum exposure to loss in significant unconsolidated VIEs, guarantees and derivatives | 0 | 0
Funded and Unfunded Exposure |  |
Maximum exposure to loss in significant unconsolidated VIEs | 227 | 2,019
Collateralized loan obligations (CLOs) | Consolidated VIEs |  |
Variable Interest Entity |  |
Consolidated VIE/SPE assets | 0 | 0
Asset-backed securities |  |
Variable Interest Entity |  |
Total involvement with SPE assets | 369,331 | 268,498
Significant unconsolidated VIE assets | 361,033 | 260,551
Funded Exposure |  |
Maximum exposure to loss in significant unconsolidated VIEs, debt investments | 59,862 | 54,349
Maximum exposure to loss in significant unconsolidated VIEs, equity investments | 638 | 735
Unfunded Exposure |  |
Maximum exposure to loss in significant unconsolidated VIEs, funding commitments | 15,940 | 13,185
Maximum exposure to loss in significant unconsolidated VIEs, guarantees and derivatives | 0 | 0
Funded and Unfunded Exposure |  |
Maximum exposure to loss in significant unconsolidated VIEs | 76,440 | 68,269
Asset-backed securities | Consolidated VIEs |  |
Variable Interest Entity |  |
Consolidated VIE/SPE assets | 8,298 | 7,947
Municipal securities tender option bond trusts (TOBs) |  |
Variable Interest Entity |  |
Total involvement with SPE assets | 2,802 | 935
Significant unconsolidated VIE assets | 0 | 0
Funded Exposure |  |
Maximum exposure to loss in significant unconsolidated VIEs, debt investments | 0 | 0
Maximum exposure to loss in significant unconsolidated VIEs, equity investments | 0 | 0
Unfunded Exposure |  |
Maximum exposure to loss in significant unconsolidated VIEs, funding commitments | 0 | 0
Maximum exposure to loss in significant unconsolidated VIEs, guarantees and derivatives | 0 | 0
Funded and Unfunded Exposure |  |
Maximum exposure to loss in significant unconsolidated VIEs | 0 | 0
Municipal securities tender option bond trusts (TOBs) | Consolidated VIEs |  |
Variable Interest Entity |  |
Consolidated VIE/SPE assets | 2,802 | 935
Municipal investments |  |
Variable Interest Entity |  |
Total involvement with SPE assets | 21,725 | 20,280
Significant unconsolidated VIE assets | 21,725 | 20,277
Funded Exposure |  |
Maximum exposure to loss in significant unconsolidated VIEs, debt investments | 2,392 | 2,360
Maximum exposure to loss in significant unconsolidated VIEs, equity investments | 2,817 | 2,730
Unfunded Exposure |  |
Maximum exposure to loss in significant unconsolidated VIEs, funding commitments | 3,374 | 2,502
Maximum exposure to loss in significant unconsolidated VIEs, guarantees and derivatives | 0 | 0
Funded and Unfunded Exposure |  |
Maximum exposure to loss in significant unconsolidated VIEs | 8,583 | 7,592
Municipal investments | Consolidated VIEs |  |
Variable Interest Entity |  |
Consolidated VIE/SPE assets | 0 | 3
Client intermediation |  |
Variable Interest Entity |  |
Total involvement with SPE assets | 196 | 387
Significant unconsolidated VIE assets | 112 | 306
Funded Exposure |  |
Maximum exposure to loss in significant unconsolidated VIEs, debt investments | 3 | 20
Maximum exposure to loss in significant unconsolidated VIEs, equity investments | 0 | 0
Unfunded Exposure |  |
Maximum exposure to loss in significant unconsolidated VIEs, funding commitments | 0 | 0
Maximum exposure to loss in significant unconsolidated VIEs, guarantees and derivatives | 52 | 49
Funded and Unfunded Exposure |  |
Maximum exposure to loss in significant unconsolidated VIEs | 55 | 69
Client intermediation | Consolidated VIEs |  |
Variable Interest Entity |  |
Consolidated VIE/SPE assets | 84 | 81
Investment funds |  |
Variable Interest Entity |  |
Total involvement with SPE assets | 3,835 | 641
Significant unconsolidated VIE assets | 3,829 | 620
Funded Exposure |  |
Maximum exposure to loss in significant unconsolidated VIEs, debt investments | 4 | 4
Maximum exposure to loss in significant unconsolidated VIEs, equity investments | 47 | 18
Unfunded Exposure |  |
Maximum exposure to loss in significant unconsolidated VIEs, funding commitments | 92 | 98
Maximum exposure to loss in significant unconsolidated VIEs, guarantees and derivatives | 13 | 0
Funded and Unfunded Exposure |  |
Maximum exposure to loss in significant unconsolidated VIEs | 156 | 120
Investment funds | Consolidated VIEs |  |
Variable Interest Entity |  |
Consolidated VIE/SPE assets | $ 6 | $ 21

X
- References No definition available. + Details
Name: | c_FundedExposureAbstract
Namespace Prefix: | c_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | c_UnfundedExposureAbstract
Namespace Prefix: | c_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of total involvement with Special Purpose Entity assets, including significant unconsolidated Variable Interest Entity assets and consolidated Variable Interest Entity and Special Purpose Entity assets. + References No definition available. + Details
Name: | c_VariableInterestEntityConsolidatedAndNonconsolidatedEntitiesAssets
Namespace Prefix: | c_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition This element represents the maximum funded exposure to loss in a significant unconsolidated variable interest entity, related to debt investments. + References No definition available. + Details
Name: | c_VariableInterestEntityDebtInvestmentsFundedMaximumExposureToLoss
Namespace Prefix: | c_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition This element represents the maximum funded exposure to loss in a significant unconsolidated variable interest entity, related to equity investments. + References No definition available. + Details
Name: | c_VariableInterestEntityEquityInvestmentsFundedMaximumExposureToLoss
Namespace Prefix: | c_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition This element represents the maximum unfunded exposure to loss in a significant unconsolidated variable interest entity, related to funding commitments. + References No definition available. + Details
Name: | c_VariableInterestEntityFundingCommitmentsUnfundedMaximumExposureToLoss
Namespace Prefix: | c_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition This element represents the maximum unfunded exposure to loss in a significant unconsolidated variable interest entity, related to guarantees and derivatives. + References No definition available. + Details
Name: | c_VariableInterestEntityGuaranteesAndDerivativesUnfundedMaximumExposureToLoss
Namespace Prefix: | c_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount of involvement with significant unconsolidated Variable Interest Entity assets. + References No definition available. + Details
Name: | c_VariableInterestEntityNonconsolidatedInvolvementAssets
Namespace Prefix: | c_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Variable Interest Entity, Primary And Not Primary Beneficiary, Maximum Loss Exposure Amount + References No definition available. + Details
Name: | c_VariableInterestEntityPrimaryAndNotPrimaryBeneficiaryMaximumLossExposureAmount
Namespace Prefix: | c_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of asset recognized for present right to economic benefit. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 235 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-05(b)(1)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477314/942-235-S99-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 235 -Name Accounting Standards Codification -Section S50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147478671/942-235-S50-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 235 -SubTopic 10 -Name Accounting Standards Codification -Section S50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480738/235-10-S50-1 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 235 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(g)(1)(i)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480678/235-10-S99-1 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 825 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 28 -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482907/825-10-50-28 Reference 6: http://www.xbrl.org/2003/role/exampleRef -Topic 480 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 64 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481620/480-10-55-64 Reference 7: http://www.xbrl.org/2003/role/exampleRef -Topic 944 -SubTopic 605 -Name Accounting Standards Codification -Section 55 -Paragraph 14 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477548/944-605-55-14 Reference 8: http://www.xbrl.org/2003/role/exampleRef -Topic 944 -SubTopic 605 -Name Accounting Standards Codification -Section 55 -Paragraph 11 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477548/944-605-55-11 Reference 9: http://www.xbrl.org/2003/role/exampleRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 48 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482785/280-10-55-48 Reference 10: http://www.xbrl.org/2003/role/exampleRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 49 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482785/280-10-55-49 Reference 11: http://www.xbrl.org/2003/role/disclosureRef -Topic 270 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (i) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482964/270-10-50-1 Reference 12: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 32 -Subparagraph (ee) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-32 Reference 13: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 32 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-32 Reference 14: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 22 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-22 Reference 15: http://www.xbrl.org/2003/role/disclosureRef -Topic 810 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (bb) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481203/810-10-50-3 Reference 16: http://www.xbrl.org/2003/role/disclosureRef -Topic 810 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 25 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481231/810-10-45-25 Reference 17: http://www.xbrl.org/2003/role/disclosureRef -Topic 235 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(g)(1)(ii)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480678/235-10-S99-1 Reference 18: http://www.xbrl.org/2003/role/disclosureRef -Topic 323 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481687/323-10-50-3 Reference 19: http://www.xbrl.org/2003/role/exampleRef -Topic 852 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 10 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481372/852-10-55-10 Reference 20: http://www.xbrl.org/2003/role/exampleRef -Topic 946 -SubTopic 830 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479168/946-830-55-12 Reference 21: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(12)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1 Reference 22: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.6-04(8)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479170/946-210-S99-1 Reference 23: http://www.xbrl.org/2003/role/disclosureRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(18)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 24: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1A -Subparagraph (SX 210.13-01(a)(4)(i)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1A Reference 25: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1A -Subparagraph (SX 210.13-01(a)(4)(ii)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1A Reference 26: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1A -Subparagraph (SX 210.13-01(a)(4)(iii)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1A Reference 27: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1A -Subparagraph (SX 210.13-01(a)(4)(iii)(A)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1A Reference 28: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1A -Subparagraph (SX 210.13-01(a)(4)(iv)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1A Reference 29: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1A -Subparagraph (SX 210.13-01(a)(5)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1A Reference 30: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1B -Subparagraph (SX 210.13-02(a)(4)(i)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1B Reference 31: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1B -Subparagraph (SX 210.13-02(a)(4)(iii)(A)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1B Reference 32: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1B -Subparagraph (SX 210.13-02(a)(4)(iii)(B)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1B Reference 33: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1B -Subparagraph (SX 210.13-02(a)(4)(iv)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1B Reference 34: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1B -Subparagraph (SX 210.13-02(a)(5)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1B Reference 35: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 852 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 7 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481404/852-10-50-7 Reference 36: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 30 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-30 Reference 37: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(11)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1 + Details
Name: | us-gaap_Assets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The reporting entity's maximum amount of exposure to loss as a result of its involvement with the Variable Interest Entity (VIE). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 6 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481203/810-10-50-6 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 810 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481203/810-10-50-4 + Details
Name: | us-gaap_VariableInterestEntityEntityMaximumLossExposureAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 810 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481203/810-10-50-3 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 810 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 25 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481231/810-10-45-25 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 810 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (bb) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481203/810-10-50-3 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 810 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 25 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481231/810-10-45-25 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 860 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 1A -Subparagraph (b)(1)(i) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481420/860-30-50-1A Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 860 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 1A -Subparagraph (b)(1)(ii) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481420/860-30-50-1A Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Topic 860 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 1A -Subparagraph (b)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481420/860-30-50-1A + Details
Name: | us-gaap_VariableInterestEntityLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_VariableInterestEntityReportingEntityInvolvementMaximumLossExposureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_InvestmentTypeAxis=us-gaap_PrivateEquityFundsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_PrivateEquityFundsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ConsolidatedEntitiesAxis=us-gaap_VariableInterestEntityPrimaryBeneficiaryMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_UnderlyingAssetClassAxis=us-gaap_CollateralizedCreditCardSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_UnderlyingAssetClassAxis=c_MortgageBackedSecuritiesIssuedByUSGovernmentCorporationsAndAgenciesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_UnderlyingAssetClassAxis=us-gaap_MortgageBackedSecuritiesIssuedByPrivateEnterprisesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_UnderlyingAssetClassAxis=c_EntityAdministeredAssetBackedCommercialPaperConduitMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_UnderlyingAssetClassAxis=us-gaap_CollateralizedLoanObligationsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_UnderlyingAssetClassAxis=us-gaap_AssetBackedSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_UnderlyingAssetClassAxis=c_MunicipalSecuritiesTenderOptionBondTrustsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_UnderlyingAssetClassAxis=c_MunicipalInvestmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_UnderlyingAssetClassAxis=c_ClientIntermediationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_UnderlyingAssetClassAxis=c_InvestmentFundsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |