Finance Receivables, Net - Credit Quality Indicators (Details) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Financing Receivable, Credit Quality Indicator [Line Items]
2020	$ 301
2019	1,185
2018	906
2017	537
2016	277
Prior	81
Subtotal	3,287	$ 3,440
United States (Direct):
Financing Receivable, Credit Quality Indicator [Line Items]
2020	78
2019	345
2018	279
2017	182
2016	117
Prior	37
Subtotal	1,038	1,103
United States (Indirect):
Financing Receivable, Credit Quality Indicator [Line Items]
2020	97
2019	339
2018	225
2017	115
2016	43
Prior	9
Subtotal	828	819
Canada
Financing Receivable, Credit Quality Indicator [Line Items]
2020	27
2019	93
2018	77
2017	54
2016	30
Prior	8
Subtotal	289	326
EMEA
Financing Receivable, Credit Quality Indicator [Line Items]
2020	99
2019	408
2018	325
2017	186
2016	87
Prior	27
Subtotal	1,132	1,192
Low Credit Risk
Financing Receivable, Credit Quality Indicator [Line Items]
2020	157
2019	588
2018	457
2017	265
2016	156
Prior	49
Subtotal	1,672	1,716
Low Credit Risk | United States (Direct):
Financing Receivable, Credit Quality Indicator [Line Items]
2020	46
2019	197
2018	189
2017	130
2016	88
Prior	27
Subtotal	677	640
Low Credit Risk | United States (Indirect):
Financing Receivable, Credit Quality Indicator [Line Items]
2020	51
2019	140
2018	58
2017	23
2016	9
Prior	2
Subtotal	283	258
Low Credit Risk | Canada
Financing Receivable, Credit Quality Indicator [Line Items]
2020	10
2019	37
2018	30
2017	14
2016	13
Prior	5
Subtotal	109	163
Low Credit Risk | EMEA
Financing Receivable, Credit Quality Indicator [Line Items]
2020	50
2019	214
2018	180
2017	98
2016	46
Prior	15
Subtotal	603	655
Average Credit Risk
Financing Receivable, Credit Quality Indicator [Line Items]
2020	118
2019	506
2018	353
2017	207
2016	93
Prior	23
Subtotal	1,300	1,352
Average Credit Risk | United States (Direct):
Financing Receivable, Credit Quality Indicator [Line Items]
2020	19
2019	108
2018	66
2017	38
2016	19
Prior	5
Subtotal	255	331
Average Credit Risk | United States (Indirect):
Financing Receivable, Credit Quality Indicator [Line Items]
2020	40
2019	179
2018	121
2017	67
2016	26
Prior	5
Subtotal	438	445
Average Credit Risk | Canada
Financing Receivable, Credit Quality Indicator [Line Items]
2020	13
2019	43
2018	34
2017	25
2016	12
Prior	3
Subtotal	130	97
Average Credit Risk | EMEA
Financing Receivable, Credit Quality Indicator [Line Items]
2020	46
2019	176
2018	132
2017	77
2016	36
Prior	10
Subtotal	477	479
High Credit Risk
Financing Receivable, Credit Quality Indicator [Line Items]
2020	26
2019	91
2018	96
2017	65
2016	28
Prior	9
Subtotal	315	372
High Credit Risk | United States (Direct):
Financing Receivable, Credit Quality Indicator [Line Items]
2020	13
2019	40
2018	24
2017	14
2016	10
Prior	5
Subtotal	106	132
High Credit Risk | United States (Indirect):
Financing Receivable, Credit Quality Indicator [Line Items]
2020	6
2019	20
2018	46
2017	25
2016	8
Prior	2
Subtotal	107	116
High Credit Risk | Canada
Financing Receivable, Credit Quality Indicator [Line Items]
2020	4
2019	13
2018	13
2017	15
2016	5
Prior	0
Subtotal	50	66
High Credit Risk | EMEA
Financing Receivable, Credit Quality Indicator [Line Items]
2020	3
2019	18
2018	13
2017	11
2016	5
Prior	2
Subtotal	$ 52	$ 58