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Finance Receivables and Loans, Net (Financing Receivable Gross Charge-Offs) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Financing Receivable, Credit Quality Indicator [Line Items]
2023			$ 22
2022			477
2021			346
2020			104
2019			133
2018 and prior			70
Revolving loans			74
Revolving loans converted to term			4
Total	$ 629	$ 331	1,230	$ 632
Consumer
Financing Receivable, Credit Quality Indicator [Line Items]
2023			22
2022			477
2021			346
2020			104
2019			76
2018 and prior			70
Revolving loans			70
Revolving loans converted to term			4
Total			1,169
Consumer \| Automotive
Financing Receivable, Credit Quality Indicator [Line Items]
2023			21
2022			437
2021			329
2020			102
2019			76
2018 and prior			67
Revolving loans			0
Revolving loans converted to term			0
Total	496	277	1,032	553
Consumer \| Consumer mortgage
Financing Receivable, Credit Quality Indicator [Line Items]
2023			0
2022			0
2021			0
2020			0
2019			0
2018 and prior			3
Revolving loans			0
Revolving loans converted to term			0
Total	2	1	3	2
Consumer \| Mortgage Finance
Financing Receivable, Credit Quality Indicator [Line Items]
2023			0
2022			0
2021			0
2020			0
2019			0
2018 and prior			1
Revolving loans			0
Revolving loans converted to term			0
Total			1
Consumer \| Mortgage - Legacy
Financing Receivable, Credit Quality Indicator [Line Items]
2023			0
2022			0
2021			0
2020			0
2019			0
2018 and prior			2
Revolving loans			0
Revolving loans converted to term			0
Total			2
Consumer \| Other
Financing Receivable, Credit Quality Indicator [Line Items]
2023			1
2022			40
2021			17
2020			2
2019			0
2018 and prior			0
Revolving loans			70
Revolving loans converted to term			4
Total	70	27	134	51
Consumer \| Personal Lending
Financing Receivable, Credit Quality Indicator [Line Items]
2023			1
2022			40
2021			17
2020			2
2019			0
2018 and prior			0
Revolving loans			0
Revolving loans converted to term			0
Total			60
Consumer \| Credit Card
Financing Receivable, Credit Quality Indicator [Line Items]
2023			0
2022			0
2021			0
2020			0
2019			0
2018 and prior			0
Revolving loans			70
Revolving loans converted to term			4
Total			74
Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
2023			0
2022			0
2021			0
2020			0
2019			57
2018 and prior			0
Revolving loans			4
Revolving loans converted to term			0
Total	$ 61	$ 26	61	$ 26
Commercial \| Automotive
Financing Receivable, Credit Quality Indicator [Line Items]
2023			0
2022			0
2021			0
2020			0
2019			0
2018 and prior			0
Revolving loans			4
Revolving loans converted to term			0
Total			4
Commercial \| Other
Financing Receivable, Credit Quality Indicator [Line Items]
2023			0
2022			0
2021			0
2020			0
2019			57
2018 and prior			0
Revolving loans			0
Revolving loans converted to term			0
Total			$ 57