Finance Receivables - Credit Quality and Impaired Receivables (Details) - USD ($) | 12 Months Ended |
Dec. 31, 2020 | Dec. 31, 2019 |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Financing Receivables | $ 106,375,000,000 | $ 114,830,000,000 |
Finance receivables before unearned interest supplements | 8,431,000,000 | 8,566,000,000 |
Related Party Transaction, Expenses from Transactions with Related Party | (337,000,000) | (363,000,000) |
Finance receivables, net | 8,027,000,000 | 8,186,000,000 |
Sales-type Lease, Interest Income, Unguaranteed Residual Asset | 2,893,000,000 | 2,795,000,000 |
Deferred Costs, Leasing, Gross | 102,000,000 | 120,000,000 |
Sales-Type and Direct Financing Lease, Gross | 5,436,000,000 | 5,651,000,000 |
Sales Type and Direct Financing Lease Revenue | 357,000,000 | 380,000,000 |
Dealer Financing [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Financing Receivable, Past Due | 99 | 62 |
Finance Leases Portfolio Segment [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Financing Receivable, Allowance for Credit Loss | (67,000,000) | (17,000,000) |
Consumer Segment [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Financing Receivables | 78,170,000,000 | |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 845,000,000 | |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 2,599,000,000 | |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 6,790,000,000 | |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 13,939,000,000 | |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 21,074,000,000 | |
Financing Receivable, Year One, Originated, Current Fiscal Year | $ 32,923,000,000 | |
Financing Receivable, Credit Quality, Range of Dates Ratings Updated | 61 to 120 days | |
Consumer Segment [Member] | 31-60 Days Past Due [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Financing Receivables | $ 681,000,000 | |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 45,000,000 | |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 62,000,000 | |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 103,000,000 | |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 162,000,000 | |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 166,000,000 | |
Financing Receivable, Year One, Originated, Current Fiscal Year | 143,000,000 | |
Consumer Segment [Member] | Financing Receivables, 61-120 Days past due [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Financing Receivables | 163,000,000 | |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 7,000,000 | |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 12,000,000 | |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 24,000,000 | |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 44,000,000 | |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 45,000,000 | |
Financing Receivable, Year One, Originated, Current Fiscal Year | 31,000,000 | |
Consumer Segment [Member] | Greater Than 120 Days Past Due [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Financing Receivables | 41,000,000 | |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 11,000,000 | |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 6,000,000 | |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 7,000,000 | |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 8,000,000 | |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 7,000,000 | |
Financing Receivable, Year One, Originated, Current Fiscal Year | 2,000,000 | |
Consumer Segment [Member] | Total past due [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Financing Receivables | 885,000,000 | |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 63,000,000 | |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 80,000,000 | |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 134,000,000 | |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 214,000,000 | |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 218,000,000 | |
Financing Receivable, Year One, Originated, Current Fiscal Year | 176,000,000 | |
Consumer Segment [Member] | Financial Asset, 1 to 29 Days Past Due [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Financing Receivables | 77,285,000,000 | |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 782,000,000 | |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 2,519,000,000 | |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 6,656,000,000 | |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 13,725,000,000 | |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 20,856,000,000 | |
Financing Receivable, Year One, Originated, Current Fiscal Year | $ 32,747,000,000 | |
Consumer Segment [Member] | Pass [Member] | Maximum [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Finance Receivables Credit Quality Ratings Term Range | 60 days | |
Consumer Segment [Member] | Substandard [Member] | Minimum [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Finance Receivables Credit Quality Ratings Term Range | 120 days | |
Non-Consumer Segment [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Financing Receivables | $ 28,205,000,000 | 40,855,000,000 |
Financing Receivable, Revolving | 24,996,000,000 | |
Non-Consumer Segment [Member] | Group I [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Financing Receivables | 20,017,000,000 | |
Financing Receivable, Revolving | 18,769,000,000 | |
Non-Consumer Segment [Member] | Group II [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Financing Receivables | 4,874,000,000 | |
Financing Receivable, Revolving | 4,680,000,000 | |
Non-Consumer Segment [Member] | Group III [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Financing Receivables | 1,533,000,000 | |
Financing Receivable, Revolving | 1,464,000,000 | |
Non-Consumer Segment [Member] | Group IV [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Financing Receivables | 93,000,000 | |
Financing Receivable, Revolving | 83,000,000 | |
Non-Consumer Segment [Member] | Wholesale and Dealer Loans [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Financing Receivables | 26,517,000,000 | 38,910,000,000 |
Non-Consumer Segment [Member] | Wholesale and Dealer Loans [Member] | Group I [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Financing Receivables | | 31,206,000,000 |
Non-Consumer Segment [Member] | Wholesale and Dealer Loans [Member] | Group II [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Financing Receivables | | 5,407,000,000 |
Non-Consumer Segment [Member] | Wholesale and Dealer Loans [Member] | Group III [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Financing Receivables | | 2,108,000,000 |
Non-Consumer Segment [Member] | Wholesale and Dealer Loans [Member] | Group IV [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Financing Receivables | | $ 189,000,000 |
Non-Consumer Segment [Member] | Dealer Loan | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 552,000,000 | |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 149,000,000 | |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 124,000,000 | |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 242,000,000 | |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 78,000,000 | |
Financing Receivable, Year One, Originated, Current Fiscal Year | 376,000,000 | |
Financing Receivable Total | 1,521,000,000 | |
Non-Consumer Segment [Member] | Dealer Loan | Group I [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 503,000,000 | |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 129,000,000 | |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 110,000,000 | |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 188,000,000 | |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 70,000,000 | |
Financing Receivable, Year One, Originated, Current Fiscal Year | 248,000,000 | |
Financing Receivable Total | 1,248,000,000 | |
Non-Consumer Segment [Member] | Dealer Loan | Group II [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 38,000,000 | |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 20,000,000 | |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 11,000,000 | |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 35,000,000 | |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 3,000,000 | |
Financing Receivable, Year One, Originated, Current Fiscal Year | 87,000,000 | |
Financing Receivable Total | 194,000,000 | |
Non-Consumer Segment [Member] | Dealer Loan | Group III [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 9,000,000 | |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 0 | |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 3,000,000 | |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 19,000,000 | |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 3,000,000 | |
Financing Receivable, Year One, Originated, Current Fiscal Year | 35,000,000 | |
Financing Receivable Total | 69,000,000 | |
Non-Consumer Segment [Member] | Dealer Loan | Group IV [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 2,000,000 | |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 0 | |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 0 | |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 0 | |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 2,000,000 | |
Financing Receivable, Year One, Originated, Current Fiscal Year | 6,000,000 | |
Financing Receivable Total | 10,000,000 | |
Non-Consumer Segment [Member] | Non-Consumer Segment [Member] | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Financing Receivables | $ 26,517,000,000 | |