Student Loans Earning Fixed Rate Floor Income

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Amount of short-term and long-term debt and lease obligation.

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The percentage points added to the reference rate to compute the variable rate on the interest rate derivative.

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- Definition

Amortized cost, after allowance for credit loss, of financing receivable. Excludes financing receivable covered under loss sharing agreement and net investment in lease.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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Derivative Financial Instruments - Narrative (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Loans and accrued interest receivable	$ 9,992,744	$ 13,108,204
Basis Swap \| Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Variable interest rate spread	0.104%
Basis Swap \| London Interbank Offered Rate (LIBOR)
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Variable interest rate spread		0.101%
Interest Rate Swap , Non-Nelnet Bank
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Student loan assets, fixed floor income	$ 400,000	$ 300,000	$ 900,000
Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate, 30 Day Average, Reset Daily \| Basis Swap \| Nelnet Bank
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Loans and accrued interest receivable	7,900,000
Three-month commercial paper rate \| Basis Swap \| Nelnet Bank
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Loans and accrued interest receivable	300,000
Three-month treasury bill, Daily reset \| Basis Swap \| Nelnet Bank
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Loans and accrued interest receivable	300,000
Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate, 90 Day Average, 3 Month CME Term, Reset Quarterly \| Basis Swap \| Nelnet Bank
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Bonds and notes payable	2,000,000
Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate, 30 Day Average, 1 Month CME Term, Reset Monthly \| Basis Swap \| Nelnet Bank
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Bonds and notes payable	$ 5,000,000