Financing Receivable, Sale, Accrued Interest

No definition available.

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- Definition

Financing Receivable, Sale, Capitalized Interest

+ References

No definition available.

+ Details

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Balance Type:	credit
Period Type:	duration

- Definition

Financing Receivable, Sale, Principal

+ References

No definition available.

+ Details

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Namespace Prefix:	slm_
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Balance Type:	credit
Period Type:	duration

- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

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-Name Accounting Standards Codification
-Section S99
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-Subparagraph (SX 210.5-02(22)(a)(1))
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Balance Type:	na
Period Type:	instant

- Definition

Percentage price of original principal amount of debt at which debt can be redeemed by the issuer.

+ References

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- Definition

Amount of decrease in financing receivable from sale. Excludes net investment in lease.

+ References

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+ Details

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Balance Type:	credit
Period Type:	duration

- Definition

Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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- Definition

The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

+ References

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- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

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-Topic 830
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- Details

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- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=slm_PrivateEducationLoansMember
Namespace Prefix:
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Balance Type:
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Subsequent Events (Details) - USD ($)	Feb. 18, 2025	Feb. 06, 2025	Jan. 31, 2025	Dec. 31, 2024	Dec. 31, 2023	Oct. 29, 2020
Subsequent Event [Line Items]
Debt instrument, face amount				$ 2,216,000,000	$ 1,147,000,000
Unsecured Debt \| Senior Unsecured Notes Due October 29, 2025
Subsequent Event [Line Items]
Debt instrument, face amount				$ 499,000,000		$ 500,000,000
Interest rate						4.20%
Subsequent Event \| Unsecured Debt \| Senior Unsecured Notes Due October 29, 2025
Subsequent Event [Line Items]
Interest rate	4.20%
Repayment of long-term debt	$ 500,000,000
Redemption price	100.00%
Loss on early extinguishment of unsecured debt	$ 1,000,000
Subsequent Event \| Unsecured Debt \| Senior Unsecured Notes Due February XX 2028 Member
Subsequent Event [Line Items]
Debt instrument, face amount			$ 500,000,000
Interest rate			6.50%
Private Education Loans \| Subsequent Event
Subsequent Event [Line Items]
Total Private Education Loans sold		$ 2,000,000,000
Loan principal		1,800,000,000
Capitalized interest		163,000,000
Financing receivable, sale, accrued interest		$ 10,000,000