Additional Proceeds From Sale Of Debt Securities, Available-For-Sale

No definition available.

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- Definition

Estimated weighted average life of student loans.

+ References

No definition available.

+ Details

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- Definition

Lendable Value Of Collateral

+ References

No definition available.

+ Details

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Balance Type:	credit
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- Definition

Line of Credit Facility, Interest Holding Percentage

+ References

No definition available.

+ Details

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- Definition

Loans Pledged As Collateral, Capitalized Interest

+ References

No definition available.

+ Details

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- Definition

Loans Pledged As Collateral, Principal Amount

+ References

No definition available.

+ Details

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- Definition

Loans Securitized or Asset Backed Financing Arrangement Ownership Interest Percentage

+ References

No definition available.

+ Details

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- Definition

Uncommitted Federal Funds

+ References

No definition available.

+ Details

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- Definition

Vertical Risk Retention, Percentage

+ References

No definition available.

+ Details

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- Definition

Principal amount of transferred financial assets in which the transferor has continuing involvement with the assets underlying the transaction. Continuing involvement includes, but is not limited to, servicing, recourse, and restrictions on transferor's interests in transferred financial assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 860
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Subparagraph (a)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481326/860-20-50-4

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- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

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- Definition

Amount of realized gain on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 9
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481800/320-10-50-9

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Balance Type:	credit
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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

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

+ Details

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- Definition

This is the principal amount outstanding for loans which are in the process of being securitized as of the date of the statement of financial position (across all types of loans).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 50
-Subparagraph (a)
-Paragraph 4
-SubTopic 20
-Topic 860
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-URI https://asc.fasb.org/1943274/2147481326/860-20-50-4

+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

The cash inflow from the issuance of long-term debt that is not secured by collateral. Excludes proceeds from tax exempt unsecured debt.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
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-Section 45
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- Definition

Amount of cash inflow from sale of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 320
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- Definition

Fair value of the securities pledged as collateral against securities loaned.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 12
-Publisher FASB
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- Definition

Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-SubTopic 10
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- Details

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Borrowings - Narrative (Details) - USD ($)							9 Months Ended	12 Months Ended
Borrowings - Narrative (Details) - USD ($)	Aug. 14, 2024	Jun. 28, 2024	May 15, 2024	Apr. 11, 2024	Apr. 09, 2024	Mar. 13, 2024	Sep. 30, 2024	Dec. 31, 2023	Jun. 14, 2024	May 07, 2024
Line of Credit Facility [Line Items]
Short-term borrowings							$ 0	$ 0
Estimated weighted average life of student loans							5 years 4 months 24 days	5 years
Vertical risk retention interest							5.00%
Uncommitted federal funds							$ 125,000,000
Lendable value of collateral							2,300,000,000	$ 1,600,000,000
Secured Borrowings \| Line of Credit
Line of Credit Facility [Line Items]
Secured borrowing facility maximum borrowing capacity									$ 2,000,000,000	$ 2,000,000,000
Line of credit facility, interest holding percentage									100.00%	100.00%
Short-term borrowings							0	$ 0
2024-C
Line of Credit Facility [Line Items]
Private education loan term accounted for as a secured financing			$ 668,000,000
Loans sold to third parties			$ 668,000,000
Ownership interest percentage on asset-backed financing			100.00%
Unsecured debt issued			$ 668,000,000
Estimated weighted average life of student loans			5 years 4 months 9 days
Basis spread on variable rate			1.19%
Loans pledged as collateral							716,000,000
Principal amount of collateral							656,000,000
Capitalized interest							60,000,000
2024-E
Line of Credit Facility [Line Items]
Private education loan term accounted for as a secured financing	$ 868,000,000
Loans sold to third parties	$ 868,000,000
Ownership interest percentage on asset-backed financing	100.00%
Unsecured debt issued	$ 868,000,000
Estimated weighted average life of student loans	5 years 2 months 1 day
Basis spread on variable rate	1.42%
Loans pledged as collateral							933,000,000
Principal amount of collateral							855,000,000
Capitalized interest							$ 78,000,000
2023-A
Line of Credit Facility [Line Items]
Vertical risk retention interest							5.00%
2023-A \| Private Education Loans
Line of Credit Facility [Line Items]
Private education loans sold						$ 2,000,000,000
Additional proceeds from sale						105,000,000
Gain on sale						$ 7,000,000
2024-R1
Line of Credit Facility [Line Items]
Vertical risk retention interest					5.00%
2024-R1 \| Private Education Loans
Line of Credit Facility [Line Items]
Private education loans sold					$ 69,000,000
2024-B
Line of Credit Facility [Line Items]
Vertical risk retention interest							5.00%
2024-B \| Private Education Loans
Line of Credit Facility [Line Items]
Private education loans sold				$ 191,000,000
Additional proceeds from sale				10,000,000
Gain on sale				$ 1,000,000
2024-D
Line of Credit Facility [Line Items]
Vertical risk retention interest							5.00%
2024-D \| Private Education Loans
Line of Credit Facility [Line Items]
Private education loans sold		$ 1,500,000,000
Additional proceeds from sale		79,000,000
Gain on sale		$ 6,000,000