Finance Receivables and Loans, Net (Finance Receivables and Loans Redefaulted During the Period) (Details) $ in Millions	3 Months Ended
Mar. 31, 2022 USD ($) loan
Accounts, Notes, Loans and Financing Receivable
Number of loans \| loan	2,113
Amortized cost	$ 33
Charge-off amount	$ 13
Consumer
Accounts, Notes, Loans and Financing Receivable
Number of loans \| loan	2,113
Amortized cost	$ 33
Charge-off amount	$ 13
Consumer \| Automotive
Accounts, Notes, Loans and Financing Receivable
Number of loans \| loan	2,111
Amortized cost	$ 31
Charge-off amount	$ 13
Consumer \| Consumer mortgage
Accounts, Notes, Loans and Financing Receivable
Number of loans \| loan	2
Amortized cost	$ 2
Charge-off amount	$ 0
Consumer \| Mortgage Finance
Accounts, Notes, Loans and Financing Receivable
Number of loans \| loan	2
Amortized cost	$ 2
Charge-off amount	$ 0

Financing Receivables, Troubled Debt Restructuring, Write-down

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

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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
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
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-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481962/310-10-50-34

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Amortized cost of financing receivable with payment default in current period and modified within previous 12 months preceding payment default for debtor experiencing financial difficulty.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
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