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FINANCE RECEIVABLES AND ALLOWANCE FOR CREDIT LOSSES - Schedule of Credit Quality (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Financing Receivable, Allowance for Credit Losses [Line Items]    
Financing Receivables $ 120,707 $ 122,814
Financing Receivable, Allowance for Credit Losses, Write-downs 677 575
Consumer    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Financing receivable, originated, more than five years before current fiscal year 1,221 846
Financing receivable, year five, originated, four years before current fiscal year 2,295 3,282
Financing receivable, originated three years before latest fiscal year 6,489 5,604
Financing receivable, originated two years before latest fiscal year 15,399 12,542
Financing receivable, originated in fiscal year before latest fiscal year 27,118 24,513
Financing receivable, originated in current fiscal year 32,850 36,545
Financing Receivables $ 85,372 $ 83,332
Percent 100.00% 100.00%
Financing receivable, originated, more than five years before current fiscal year, writeoff $ 54 $ 46
Financing receivable, year five, originated, four years before current fiscal year, writeoff 54 58
Financing receivable, year four, originated, three years before current fiscal year, writeoff 124 71
Financing receivable, year three, originated, two years before current fiscal year, writeoff 187 152
Financing receivable, year two, originated, fiscal year before current fiscal year, writeoff 205 191
Financing receivable, year one, originated, current fiscal year, writeoff 42 50
Financing Receivable, Allowance for Credit Losses, Write-downs 666 568
Consumer | Total past due    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Financing receivable, originated, more than five years before current fiscal year 82 58
Financing receivable, year five, originated, four years before current fiscal year 89 120
Financing receivable, originated three years before latest fiscal year 190 139
Financing receivable, originated two years before latest fiscal year 303 244
Financing receivable, originated in fiscal year before latest fiscal year 364 324
Financing receivable, originated in current fiscal year 226 262
Financing Receivables $ 1,254 $ 1,147
Percent 1.50% 1.40%
Consumer | 31-60 days past due    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Financing receivable, originated, more than five years before current fiscal year $ 61 $ 43
Financing receivable, year five, originated, four years before current fiscal year 65 93
Financing receivable, originated three years before latest fiscal year 139 104
Financing receivable, originated two years before latest fiscal year 228 187
Financing receivable, originated in fiscal year before latest fiscal year 275 242
Financing receivable, originated in current fiscal year 166 203
Financing Receivables $ 934 $ 872
Percent 1.10% 1.00%
Consumer | Greater than 60 days past due    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Financing receivable, originated, more than five years before current fiscal year $ 21 $ 15
Financing receivable, year five, originated, four years before current fiscal year 24 27
Financing receivable, originated three years before latest fiscal year 51 35
Financing receivable, originated two years before latest fiscal year 75 57
Financing receivable, originated in fiscal year before latest fiscal year 89 82
Financing receivable, originated in current fiscal year 60 59
Financing Receivables $ 320 $ 275
Percent 0.40% 0.40%
Consumer | Current    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Financing receivable, originated, more than five years before current fiscal year $ 1,139 $ 788
Financing receivable, year five, originated, four years before current fiscal year 2,206 3,162
Financing receivable, originated three years before latest fiscal year 6,299 5,465
Financing receivable, originated two years before latest fiscal year 15,096 12,298
Financing receivable, originated in fiscal year before latest fiscal year 26,754 24,189
Financing receivable, originated in current fiscal year 32,624 36,283
Financing Receivables $ 84,118 $ 82,185
Percent 98.50% 98.60%