Finance Receivables, Net - Schedule of Amortized Cost Basis of Retail Loan Portfolio and Dealer Products Portfolio by Credit Quality Indicator (Details) $ in Millions	Sep. 30, 2020 USD ($)
Retail Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
2021	$ 16,949
2020	19,931
2019	11,767
2018	8,264
2017	4,003
2016 and Prior	1,189
Total	62,103
Dealer Products [Member]
Financing Receivable, Recorded Investment [Line Items]
2021	1,436
2020	787
2019	724
2018	539
2017	531
2016 and Prior	2,202
Revolving loans	7,085
Total	13,304
Current [Member] \| Retail Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
2021	16,880
2020	19,657
2019	11,527
2018	8,083
2017	3,897
2016 and Prior	1,119
Total	61,163
30-59 Days Past Due [Member] \| Retail Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
2021	56
2020	187
2019	166
2018	125
2017	74
2016 and Prior	53
Total	661
60-89 Days Past Due [Member] \| Retail Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
2021	11
2020	58
2019	49
2018	38
2017	23
2016 and Prior	17
Total	196
90 Days or Greater Past Due [Member] \| Retail Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
2021	2
2020	29
2019	25
2018	18
2017	9
2016 and Prior	0
Total	83
Wholesale [Member] \| Dealer Products [Member]
Financing Receivable, Recorded Investment [Line Items]
2021	0
2020	0
2019	0
2018	0
2017	0
2016 and Prior	0
Revolving loans	6,018
Total	6,018
Wholesale [Member] \| Dealer Products [Member] \| Performing [Member]
Financing Receivable, Recorded Investment [Line Items]
2021	0
2020	0
2019	0
2018	0
2017	0
2016 and Prior	0
Revolving loans	5,603
Total	5,603
Wholesale [Member] \| Dealer Products [Member] \| Credit Watch [Member]
Financing Receivable, Recorded Investment [Line Items]
2021	0
2020	0
2019	0
2018	0
2017	0
2016 and Prior	0
Revolving loans	364
Total	364
Wholesale [Member] \| Dealer Products [Member] \| At Risk [Member]
Financing Receivable, Recorded Investment [Line Items]
2021	0
2020	0
2019	0
2018	0
2017	0
2016 and Prior	0
Revolving loans	37
Total	37
Wholesale [Member] \| Dealer Products [Member] \| Default [Member]
Financing Receivable, Recorded Investment [Line Items]
2021	0
2020	0
2019	0
2018	0
2017	0
2016 and Prior	0
Revolving loans	14
Total	14
Real estate [Member] \| Dealer Products [Member]
Financing Receivable, Recorded Investment [Line Items]
2021	1,140
2020	416
2019	498
2018	490
2017	400
2016 and Prior	1,952
Revolving loans	32
Total	4,928
Real estate [Member] \| Dealer Products [Member] \| Performing [Member]
Financing Receivable, Recorded Investment [Line Items]
2021	1,099
2020	366
2019	483
2018	451
2017	353
2016 and Prior	1,784
Revolving loans	32
Total	4,568
Real estate [Member] \| Dealer Products [Member] \| Credit Watch [Member]
Financing Receivable, Recorded Investment [Line Items]
2021	18
2020	50
2019	15
2018	25
2017	33
2016 and Prior	144
Revolving loans	0
Total	285
Real estate [Member] \| Dealer Products [Member] \| At Risk [Member]
Financing Receivable, Recorded Investment [Line Items]
2021	23
2020	0
2019	0
2018	0
2017	5
2016 and Prior	24
Revolving loans	0
Total	52
Real estate [Member] \| Dealer Products [Member] \| Default [Member]
Financing Receivable, Recorded Investment [Line Items]
2021	0
2020	0
2019	0
2018	14
2017	9
2016 and Prior	0
Revolving loans	0
Total	23
Working capital [Member] \| Dealer Products [Member]
Financing Receivable, Recorded Investment [Line Items]
2021	296
2020	371
2019	226
2018	49
2017	131
2016 and Prior	250
Revolving loans	1,035
Total	2,358
Working capital [Member] \| Dealer Products [Member] \| Performing [Member]
Financing Receivable, Recorded Investment [Line Items]
2021	289
2020	322
2019	210
2018	49
2017	122
2016 and Prior	214
Revolving loans	1,028
Total	2,234
Working capital [Member] \| Dealer Products [Member] \| Credit Watch [Member]
Financing Receivable, Recorded Investment [Line Items]
2021	7
2020	49
2019	14
2018	0
2017	1
2016 and Prior	36
Revolving loans	6
Total	113
Working capital [Member] \| Dealer Products [Member] \| At Risk [Member]
Financing Receivable, Recorded Investment [Line Items]
2021	0
2020	0
2019	2
2018	0
2017	8
2016 and Prior	0
Revolving loans	1
Total	11
Working capital [Member] \| Dealer Products [Member] \| Default [Member]
Financing Receivable, Recorded Investment [Line Items]
2021	0
2020	0
2019	0
2018	0
2017	0
2016 and Prior	0
Revolving loans	0
Total	$ 0

Loans and leases receivable at amortized cost.

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Amount of financing receivable originated more than five years prior to current fiscal year.

+ References

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-Publisher FASB
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