Loan Receivables (Schedule of Troubled Debt Restructurings That Subsequently Defaulted) (Details)	12 Months Ended
Dec. 31, 2022 USD ($) accounts
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amount of missed payments after which a customer defaults from a modification program (in payments)	2
Delinquency days to default (in days)	60 days
Credit Card Loans [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructurings that subsequently defaulted, number of accounts \| accounts	28,231
Troubled debt restructurings that subsequently defaulted, aggregated outstanding balances upon default	$ 141,000,000
Total Other Loans [Member] \| Private Student Loans [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructurings that subsequently defaulted, number of accounts \| accounts	1,145
Troubled debt restructurings that subsequently defaulted, aggregated outstanding balances upon default	$ 22,000,000
Total Other Loans [Member] \| Personal Loans [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructurings that subsequently defaulted, number of accounts \| accounts	1,140
Troubled debt restructurings that subsequently defaulted, aggregated outstanding balances upon default	$ 20,000,000

Number of days a troubled debt restructuring is delinquent before being deemed in default.

No definition available.

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- Definition

The number of consecutive missed payments after which a customer defaults from a modification program for credit card and personal loans.

+ References

No definition available.

+ Details

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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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- Definition

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
-Paragraph 34
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481962/310-10-50-34

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- Definition

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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