v3.26.3
Fair Value Measurement - Fair Value Asset and Liabilities Carried at Other than Fair Value (Details) - USD ($)
$ in Millions
Sep. 30, 2026
Dec. 31, 2025
Carrying Value    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash and equivalents [1] $ 15,901 $ 14,973
Interest receivable, fair value [1] 49 27
Other assets [1],[2] 796 44
Loan receivables, net [3] 93,003 93,364
Interest payable, fair value [1] 227 287
Deposits 82,951 81,144
Estimate of Fair Value Measurement    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash and equivalents [1] 15,901 14,973
Interest receivable, fair value [1] 49 27
Other assets [1],[2] 796 44
Loan receivables, net [3] 105,648 [1],[2] 106,591
Interest payable, fair value [1] 227 287
Deposits 82,965 81,374
Level 1 | Estimate of Fair Value Measurement    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash and equivalents [1] 15,901 14,973
Interest receivable, fair value [1] 49 27
Other assets [1],[2] 796 44
Loan receivables, net [3] 0 0
Interest payable, fair value [1] 227 287
Deposits 0 0
Level 2 | Estimate of Fair Value Measurement    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash and equivalents [1] 0 0
Interest receivable, fair value [1] 0 0
Other assets [1],[2] 0 0
Loan receivables, net [3] 0 0
Interest payable, fair value [1] 0 0
Deposits 82,965 81,374
Level 3 | Estimate of Fair Value Measurement    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash and equivalents [1] 0 0
Interest receivable, fair value [1] 0 0
Other assets [1],[2] 0 0
Loan receivables, net [3] 105,648 106,591
Interest payable, fair value [1] 0 0
Deposits 0 0
Senior Notes | Carrying Value    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Senior and subordinated unsecured notes 8,110 6,767
Senior Notes | Estimate of Fair Value Measurement    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Senior and subordinated unsecured notes 7,888 6,870
Senior Notes | Level 1 | Estimate of Fair Value Measurement    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Senior and subordinated unsecured notes 0 0
Senior Notes | Level 2 | Estimate of Fair Value Measurement    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Senior and subordinated unsecured notes 7,888 6,870
Senior Notes | Level 3 | Estimate of Fair Value Measurement    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Senior and subordinated unsecured notes 0 0
Variable Interest Entity, Primary Beneficiary | Carrying Value    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Borrowings of consolidated securitization entities 8,915 8,415
Variable Interest Entity, Primary Beneficiary | Estimate of Fair Value Measurement    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Borrowings of consolidated securitization entities 8,849 8,477
Variable Interest Entity, Primary Beneficiary | Level 1 | Estimate of Fair Value Measurement    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Borrowings of consolidated securitization entities 0 0
Variable Interest Entity, Primary Beneficiary | Level 2 | Estimate of Fair Value Measurement    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Borrowings of consolidated securitization entities 5,931 5,559
Variable Interest Entity, Primary Beneficiary | Level 3 | Estimate of Fair Value Measurement    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Borrowings of consolidated securitization entities $ 2,918 $ 2,918
[1] Carrying value approximates fair value as the financial assets and liabilities are liquid in nature or have a short-term maturity.
[2] This balance relates to restricted cash and equivalents, which is included in Other assets in our Condensed Consolidated Statements of Financial Position.
[3] xcludes financial assets for which we have elected the fair value option. Under certain retail partner program agreements, the expected sales proceeds in the event of a sale of their credit card portfolio may be limited to the amounts owed by our customers, which may be less than the fair value indicated above.(d)Includes demand deposits with no defined maturity