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Borrowings (Tables)
12 Months Ended
Dec. 31, 2021
Debt Disclosure [Abstract]  
Secured borrowings The following table summarizes our secured borrowings at December 31, 2021 and 2020.
As of December 31,
(dollars in thousands)
20212020
Short-TermLong-TermTotalShort-TermLong-TermTotal
Unsecured borrowings:
Unsecured debt (fixed-rate)$— $986,138 $986,138 $— $692,879 $692,879 
Total unsecured borrowings— 986,138 986,138 — 692,879 692,879 
Secured borrowings:
Private Education Loan term securitizations:
Fixed-rate— 3,897,996 3,897,996 — 3,261,233 3,261,233 
Variable-rate— 1,046,856 1,046,856 — 1,235,105 1,235,105 
Total Private Education Loan term securitizations— 4,944,852 4,944,852 — 4,496,338 4,496,338 
Secured Borrowing Facility— — — — — — 
Total secured borrowings— 4,944,852 4,944,852 — 4,496,338 4,496,338 
Total $— $5,930,990 $5,930,990 $— $5,189,217 $5,189,217 
Short-term borrowings The following table summarizes the outstanding short-term borrowings, the weighted average interest rates at the end of the period, and the related average balance and weighted average interest rates during the period. The Secured Borrowing Facility’s contractual maturity is two years from the date of inception or renewal (one-year revolving period plus a one-year amortization period); however, we classify advances under our Secured Borrowing Facility as short-term borrowings because it is our intention to repay those advances within one year. The 5.125 percent unsecured Senior Notes due April 5, 2022, which we redeemed in the fourth quarter of 2021, were classified as short-term borrowings in April of 2021, and are included in the table below.
December 31, 2021Year Ended
December 31, 2021
(Dollars in thousands)Ending BalanceWeighted Average
Interest Rate
Average BalanceWeighted Average
Interest Rate
Short-term borrowings:
Unsecured Debt$— — %$122,396 5.78 %
Secured Borrowing Facility— — — — 
Total short-term borrowings$— — %$122,396 5.78 %
Maximum outstanding at any month end$199,651 
December 31, 2020Year Ended
December 31, 2020
(Dollars in thousands)Ending BalanceWeighted Average
Interest Rate
Average Balance
Weighted Average
Interest Rate(1)
Short-term borrowings:
Secured Borrowing Facility$— — %$45,820 24.99 %
Maximum outstanding at any month end$289,230 
    
(1)The interest for the non-use fees is calculated based on the Secured Borrowing Facility’s maximum borrowing limit, which was $2 billion in both 2021 and 2020.
Long-term borrowings
The following table summarizes the outstanding long-term borrowings, the weighted average interest rates at the end of the period and the related average balance during the period. Rates reflect stated interest of borrowings and related discounts and premiums. The long-term borrowings amortize over time and mature serially from 2025 to 2053.

December 31, 2021Year Ended
December 31, 2021
December 31, 2020Year Ended
December 31, 2020
(Dollars in thousands)Ending BalanceWeighted Average
Interest Rate
Average BalanceEnding BalanceWeighted Average
Interest Rate
Average Balance
Floating-rate borrowings$1,046,857 1.05 %$1,073,042 $1,235,105 1.09 %$1,432,446 
Fixed-rate borrowings4,884,133 2.65 4,094,640 3,954,112 3.08 3,316,425 
Total long-term borrowings$5,930,990 2.37 %$5,167,682 $5,189,217 2.60 %$4,748,871 
Schedule of Maturities of Long-term Debt
As of December 31, 2021, the stated maturity and maturity to call date of our brokered deposits and borrowings are summarized below.

As of December 31, 2021
(dollars in thousands)
Stated Maturity(1)
Maturity to Call Date
Brokered DepositsUnsecured DebtSecured BorrowingsTotalBrokered DepositsUnsecured DebtSecured BorrowingsTotal
Year of Maturity
2022$2,918,335 $— $718,153 $3,636,488 $2,918,335 $— $718,153 $3,636,488 
20232,033,829 — 698,078 2,731,907 2,033,829 — 698,078 2,731,907 
20241,236,522 — 687,600 1,924,122 1,236,522 — 687,600 1,924,122 
2025270,174 500,000 648,315 1,418,489 270,174 500,000 648,315 1,418,489 
20261,033,313 500,000 618,380 2,151,693 1,033,313 500,000 618,380 2,151,693 
2027 and after47,401 — 1,750,502 1,797,903 47,401 — 1,750,502 1,797,903 
7,539,574 1,000,000 5,121,028 13,660,602 7,539,574 1,000,000 5,121,028 13,660,602 
Hedge accounting adjustments33,426 — — 33,426 33,426 — — 33,426 
Total$7,573,000 $1,000,000 $5,121,028 $13,694,028 $7,573,000 $1,000,000 $5,121,028 $13,694,028 
(1)We view our securitization trust debt as long-term based on the contractual maturity dates and projected principal paydowns based on our current estimates regarding loan prepayment speeds. The projected principal paydowns in year 2022 include $718 million related to the securitization trust debt.
Secured financing
Secured Financings
The following summarizes our secured financings issued in 2020 and 2021:

IssueDate IssuedTotal Issued
Weighted Average
Cost of Funds(1)
Weighted Average Life
(in years)
(Dollars in thousands)
Private Education Loans:
2020-AFebruary 2020$636,000 
1-month LIBOR plus 0.88%
4.18
2020-BAugust 2020707,000 
1-month LIBOR plus 1.30%
4.14
Total notes issued in 2020$1,343,000 
Total loan and accrued interest amount securitized at inception in 2020(2)
$1,463,230 
2021-BMay 2021$531,000 
1-month LIBOR plus 0.77%
4.26
2021-DAugust 2021527,000 
1-month LIBOR plus 0.69%
4.22
2021-ENovember 2021534,000 
1-month LIBOR plus 0.69%
4.15
Total notes issued in 2021$1,592,000 
Total loan and accrued interest amount securitized at inception in 2021$1,656,263 
(1) Represents LIBOR equivalent cost of funds for floating and fixed-rate bonds, excluding issuance costs.
(2) At December 31, 2021, $1.11 billion of our Private Education Loans, including $1.05 billion of principal and $62 million in capitalized interest, were encumbered related to the 2020 transactions.
Schedule of variable interest entities We consolidate our financing entities that are VIEs as a result of our being the entities’ primary beneficiary. As a result, these financing VIEs are accounted for as secured borrowings.
As of December 31, 2021
(dollars in thousands)
Debt OutstandingCarrying Amount of Assets Securing Debt Outstanding
Short-TermLong-TermTotalLoansRestricted Cash
Other Assets(1)
Total
Secured borrowings:
Private Education Loan term securitizations$— $4,994,852 $4,994,852 $6,029,034 $210,741 $357,982 $6,597,757 
Secured Borrowing Facility— — — — — 867 867 
Total$— $4,994,852 $4,994,852 $6,029,034 $210,741 $358,849 $6,598,624 
    
As of December 31, 2020
(dollars in thousands)
Debt OutstandingCarrying Amount of Assets Securing Debt Outstanding
Short-TermLong-TermTotalLoansRestricted Cash
Other Assets(1)
Total
Secured borrowings:
Private Education Loan term securitizations$— $4,496,338 $4,496,338 $5,661,123 $154,417 $356,967 $6,172,507 
Secured Borrowing Facility— — — — — 436 436 
Total$— $4,496,338 $4,496,338 $5,661,123 $154,417 $357,403 $6,172,943 
(1) Other assets primarily represent accrued interest receivable.
The table below provides a summary of our exposure related to our unconsolidated VIEs.
20212020
As of December 31,
(dollars in thousands)
Debt Interests(1)
Equity Interests(2)
Total Exposure
Debt Interests(1)
Equity Interests(2)
Total Exposure
Private Education Loan term securitizations$192,245 $37,465 $229,710 $68,908 $16,923 $85,831 
(1) Vertical risk retention interest classified as available-for-sale investment.
(2) Vertical risk retention interest classified as trading investment.