Finance Receivables and Loans, Net (Finance Receivables and Loans Redefaulted During the Period) (Details) $ in Millions	12 Months Ended
Dec. 31, 2022 USD ($) loan	Dec. 31, 2021 USD ($) loan	Dec. 31, 2020 USD ($) loan
Accounts, Notes, Loans and Financing Receivable
Number of loans \| loan	9,689	9,300	10,072
Amortized cost	$ 146	$ 119	$ 104
Charge-off amount	$ 95	$ 61	$ 71
Consumer
Accounts, Notes, Loans and Financing Receivable
Number of loans \| loan	9,688	9,300	10,072
Amortized cost	$ 145	$ 119	$ 104
Charge-off amount	$ 64	$ 61	$ 71
Consumer \| Automotive
Accounts, Notes, Loans and Financing Receivable
Number of loans \| loan	9,227	9,295	10,070
Amortized cost	$ 143	$ 119	$ 104
Charge-off amount	$ 64	$ 61	$ 71
Consumer \| Consumer mortgage
Accounts, Notes, Loans and Financing Receivable
Number of loans \| loan	4	5	2
Amortized cost	$ 2	$ 0	$ 0
Charge-off amount	$ 0	$ 0	$ 0
Consumer \| Mortgage Finance
Accounts, Notes, Loans and Financing Receivable
Number of loans \| loan	4	1	1
Amortized cost	$ 2	$ 0	$ 0
Charge-off amount	$ 0	$ 0	$ 0
Consumer \| Mortgage - Legacy
Accounts, Notes, Loans and Financing Receivable
Number of loans \| loan		4	1
Amortized cost		$ 0	$ 0
Charge-off amount		$ 0	$ 0
Consumer \| Other
Accounts, Notes, Loans and Financing Receivable
Number of loans \| loan	457
Amortized cost	$ 0
Charge-off amount	$ 0
Consumer \| Credit card receivables
Accounts, Notes, Loans and Financing Receivable
Number of loans \| loan	457
Amortized cost	$ 0
Charge-off amount	$ 0
Commercial
Accounts, Notes, Loans and Financing Receivable
Number of loans \| loan	1
Amortized cost	$ 1
Charge-off amount	$ 31
Commercial \| Other
Accounts, Notes, Loans and Financing Receivable
Number of loans \| loan	1
Amortized cost	$ 1
Charge-off amount	$ 31

Financing Receivables, Troubled Debt Restructuring, Write-down

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- Definition

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+ References

No definition available.

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Number of financing receivable contracts modified as troubled debt restructuring within previous 12 months, with subsequent payment default.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 34
-URI https://asc.fasb.org/extlink&oid=123577603&loc=SL6953682-111524

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Amount of financing receivable modified as troubled debt restructuring within previous 12 months, with subsequent payment default.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 34
-Subparagraph (a)(2)
-URI https://asc.fasb.org/extlink&oid=123577603&loc=SL6953682-111524

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