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Borrowings | 12 Months Ended
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Dec. 31, 2018
Debt Disclosure [Abstract] |
Borrowings | Borrowings Outstanding borrowings consist of unsecured debt and secured borrowings issued through our term ABS program and our Secured Borrowing Facility. The following table summarizes our secured borrowings at December 31, 2018 and 2017.
|  | December 31, 2018 |  | December 31, 2017
|  | Short-Term |  | Long-Term |  | Total |  | Short-Term |  | Long-Term |  | Total
Unsecured borrowings: |  |  |  |  |  |  |  |  |  |  |  |
Unsecured debt (fixed) |  | $ | — |  |  | $ | 197,348 |  |  | $ | 197,348 |  |  | $ | — |  |  | $ | 196,539 |  |  | $ | 196,539 |
Total unsecured borrowings |  | — |  |  | 197,348 |  |  | 197,348 |  |  | — |  |  | 196,539 |  |  | 196,539 |
Secured borrowings: |  |  |  |  |  |  |  |  |  |  |  |
Private Education Loan term securitizations: |  |  |  |  |  |  |  |  |  |  |  |
Fixed-rate |  | — |  |  | 2,284,347 |  |  | 2,284,347 |  |  | — |  |  | 1,565,760 |  |  | 1,565,760 |
Variable-rate |  | — |  |  | 1,802,609 |  |  | 1,802,609 |  |  | — |  |  | 1,512,971 |  |  | 1,512,971 |
Total Private Education Loan term securitizations |  | — |  |  | 4,086,956 |  |  | 4,086,956 |  |  | — |  |  | 3,078,731 |  |  | 3,078,731 |
Secured Borrowing Facility |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |
Total secured borrowings |  | — |  |  | 4,086,956 |  |  | 4,086,956 |  |  | — |  |  | 3,078,731 |  |  | 3,078,731 |
Total |  | $ | — |  |  | $ | 4,284,304 |  |  | $ | 4,284,304 |  |  | $ | — |  |  | $ | 3,275,270 |  |  | $ | 3,275,270 |
Short-term Borrowings Secured Borrowing Facility On February 21, 2018 and February 20, 2019, we amended and extended the maturity of our $750 million Secured Borrowing Facility. We hold 100 percent of the residual interest in the Secured Borrowing Facility trust. Under the amended Secured Borrowing Facility, we incur financing costs of between 0.35 percent and 0.45 percent on unused borrowing capacity and a variable-yield rate plus 0.85 percent on outstandings. The amended Secured Borrowing Facility extends the revolving period, during which we may borrow, repay and reborrow funds, until February 19, 2020. The scheduled amortization period, during which amounts outstanding under the Secured Borrowing Facility must be repaid, ends on February 19, 2021 (or earlier, if certain material adverse events occur). For additional information, see Note 23, “Subsequent Events.” At December 31, 2018 and December 31, 2017, there were no borrowings outstanding under the Secured Borrowing Facility. Short-term borrowings have a remaining term to maturity of one year or less. 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. Rates reflect stated interest of borrowings and related discounts and premiums.
|  | December 31, 2018 |  | Year Ended December 31, 2018
|  | Ending Balance |  | Weighted Average Interest Rate |  | Average Balance |  | Weighted Average Interest Rate
Short-term borrowings: |  |  |  |  |  |  |  |
Secured Borrowing Facility |  | $ | — |  |  | — | % |  | $ | 52,603 |  |  | 8.91 | %
Maximum outstanding at any month end |  | $ | 300,000 |  |  |  |  |  |  |
|  | December 31, 2017 |  | Year Ended December 31, 2017
|  | Ending Balance |  | Weighted Average Interest Rate |  | Average Balance |  | Weighted Average Interest Rate
Short-term borrowings: |  |  |  |  |  |  |  |
Secured Borrowing Facility |  | $ | — |  |  | — | % |  | $ | 81,370 |  |  | 6.09 | %
Maximum outstanding at any month end |  | $ | 300,000 |  |  |  |  |  |  |
Long-term Borrowings Unsecured Debt On April 5, 2017, we issued an unsecured debt offering of $200 million of 5.125 percent Senior Notes due April 5, 2022 at par. At December 31, 2018, the outstanding balance was $197 million. Secured Financings 2018 Transactions On March 21, 2018, we executed our $670 million SMB Private Education Loan Trust 2018-A term ABS transaction, which was accounted for as a secured financing. We sold $670 million of notes to third parties and retained a 100 percent interest in the residual certificates issued in the securitization, raising approximately $668 million of gross proceeds. The Class A and Class B notes had a weighted average life of 4.43 years and priced at a weighted average LIBOR equivalent cost of 1-month LIBOR plus 0.78 percent. At December 31, 2018, $647 million of our Private Education Loans were encumbered because of this transaction. On June 20, 2018, we executed our $687 million SMB Private Education Loan Trust 2018-B term ABS transaction, which was accounted for as a secured financing. We sold $687 million of notes to third parties and retained a 100 percent interest in the residual certificates issued in the securitization, raising approximately $683 million of gross proceeds. The Class A and Class B notes had a weighted average life of 4.40 years and priced at a weighted average LIBOR equivalent cost of 1-month LIBOR plus 0.76 percent. At December 31, 2018, $678 million of our Private Education Loans were encumbered because of this transaction. On September 19, 2018, we executed our $544 million SMB Private Education Loan Trust 2018-C term ABS transaction, which was accounted for as a secured financing. We sold $544 million of notes to third parties and retained a 100 percent interest in the residual certificates issued in the securitization, raising approximately $541 million of gross proceeds. The Class A and Class B notes had a weighted average life of 4.32 years and priced at a weighted average LIBOR equivalent cost of 1-month LIBOR plus 0.77 percent. At December 31, 2018, $544 million of our Private Education Loans were encumbered because of this transaction. 2017 Transactions On February 8, 2017, we executed our $772 million SMB Private Education Loan Trust 2017-A term ABS transaction, which was accounted for as a secured financing. We sold $772 million of notes to third parties and retained a 100 percent interest in the residual certificates issued in the securitization, raising approximately $768 million of gross proceeds. The Class A and Class B notes had a weighted average life of 4.27 years and priced at a weighted average LIBOR equivalent cost of 1-month LIBOR plus 0.93 percent. At December 31, 2018, $631 million of our Private Education Loans were encumbered as a result of this transaction. On November 8, 2017, we executed our $676 million SMB Private Education Loan Trust 2017-B term ABS transaction, which was accounted for as a secured financing. We sold $676 million of notes to third parties and retained a 100 percent interest in the residual certificates issued in the securitization, raising approximately $674 million of gross proceeds. The Class A and Class B notes had a weighted average life of 4.07 years and priced at a weighted average LIBOR equivalent cost of 1-month LIBOR plus 0.80 percent. At December 31, 2018, $617 million of our Private Education Loans were encumbered as a result of this transaction. Prior to 2017, we executed a total of $2.4 billion in ABS transactions that were accounted for as secured financings. At December 31, 2018, $1.9 billion of our Private Education Loans were encumbered as a result of these transactions. 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 2023 to 2040.
|  | December 31, 2018 |  | Year Ended December 31, 2018 |  | December 31, 2017 |  | Year Ended December 31, 2017
|  | Ending Balance |  | Weighted Average Interest Rate |  | Average Balance |  | Ending Balance |  | Weighted Average Interest Rate |  | Average Balance
Floating-rate borrowings |  | $ | 1,802,609 |  |  | 3.26 | % |  | $ | 1,720,540 |  |  | $ | 1,512,970 |  |  | 2.32 | % |  | $ | 1,422,856 |
Fixed-rate borrowings |  | 2,481,695 |  |  | 3.28 |  |  | 2,172,993 |  |  | 1,762,300 |  |  | 3.04 |  |  | 1,420,737 |
Total long-term borrowings |  | $ | 4,284,304 |  |  | 3.27 | % |  | $ | 3,893,533 |  |  | $ | 3,275,270 |  |  | 2.71 | % |  | $ | 2,843,593 |
As of December 31, 2018, the stated maturity and maturity to call date of our brokered deposits and borrowings are summarized below.
| December 31, 2018
| Stated Maturity(1) |  | Maturity to Call Date(2)
| Brokered Deposits |  | Unsecured Debt |  | Secured Borrowings |  | Total |  | Brokered Deposits |  | Unsecured Debt |  | Secured Borrowings |  | Total
Year of Maturity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2019 | $ | 2,990,740 |  |  | $ | — |  |  | $ | 586,536 |  |  | $ | 3,577,276 |  |  | $ | 2,990,740 |  |  | $ | — |  |  | $ | 586,536 |  |  | $ | 3,577,276 |
2020 | 1,706,761 |  |  | — |  |  | 500,618 |  |  | 2,207,379 |  |  | 1,706,761 |  |  | — |  |  | 500,618 |  |  | 2,207,379 |
2021 | 1,381,842 |  |  | — |  |  | 459,920 |  |  | 1,841,762 |  |  | 1,381,842 |  |  | — |  |  | 459,920 |  |  | 1,841,762 |
2022 | 465,809 |  |  | 200,000 |  |  | 459,720 |  |  | 1,125,529 |  |  | 465,809 |  |  | 200,000 |  |  | 459,720 |  |  | 1,125,529 |
2023 | 1,272,479 |  |  | — |  |  | 473,033 |  |  | 1,745,512 |  |  | 1,272,479 |  |  | — |  |  | 473,033 |  |  | 1,745,512 |
2024 and after | 161,549 |  |  | — |  |  | 1,794,896 |  |  | 1,956,445 |  |  | 161,549 |  |  | — |  |  | 1,794,896 |  |  | 1,956,445 |
| 7,979,180 |  |  | 200,000 |  |  | 4,274,723 |  |  | 12,453,903 |  |  | 7,979,180 |  |  | 200,000 |  |  | 4,274,723 |  |  | 12,453,903 |
Hedge accounting adjustments | (10,330 | ) |  | — |  |  | — |  |  | (10,330 | ) |  | (10,330 | ) |  | — |  |  | — |  |  | (10,330 | )
Total | $ | 7,968,850 |  |  | $ | 200,000 |  |  | $ | 4,274,723 |  |  | $ | 12,443,573 |  |  | $ | 7,968,850 |  |  | $ | 200,000 |  |  | $ | 4,274,723 |  |  | $ | 12,443,573 |
____________ (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 2019 include $586 million related to the securitization trust debt. (2)The aggregate principal amount of debt that matures in each period is $3.6 billion in 2019, $2.2 billion in 2020, $1.8 billion in 2021, $1.1 billion in 2022, $1.7 billion in 2023, and $2.0 billion in 2024 and after. Secured Financings
Issue |  | Date Issued |  | Total Issued |  | Weighted Average Cost of Funds(1) |  | Weighted Average Life (in years)
Private Education: |  |  |  |  |  |
2017-A |  | February 2017 |  | $ | 772,000 |  |  | 1-month LIBOR plus 0.93% |  | 4.27
2017-B |  | November 2017 |  | 676,000 |  |  | 1-month LIBOR plus 0.80% |  | 4.07
|  |  |  | — |  |  |  |  |
Total notes issued in 2017 |  | $ | 1,448,000 |  |  |  |  |
Total loan and accrued interest amount securitized at inception in 2017 |  | $ | 1,606,804 |  |  |  |  |
2018-A |  | March 2018 |  | $ | 670,000 |  |  | 1-month LIBOR plus 0.78% |  | 4.43
2018-B |  | June 2018 |  | 686,500 |  |  | 1-month LIBOR plus 0.76% |  | 4.40
2018-C |  | September 2018 |  | 544,000 |  |  | 1-month LIBOR plus 0.77% |  | 4.32
Total notes issued in 2018 |  | $ | 1,900,500 |  |  |  |  |
Total loan and accrued interest amount securitized at inception in 2018 |  | $ | 2,101,644 |  |  |  |  |
____________ (1) Represents LIBOR equivalent cost of funds for floating and fixed-rate bonds, excluding issuance costs. Consolidated Funding Vehicles 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.
|  | December 31, 2018
|  | Debt Outstanding |  | Carrying Amount of Assets Securing Debt Outstanding
|  | Short-Term |  | Long-Term |  | Total |  | Loans |  | Restricted Cash |  | Other Assets(1) |  | Total
Secured borrowings: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Private Education Loan term securitizations |  | $ | — |  |  | $ | 4,086,956 |  |  | $ | 4,086,956 |  |  | $ | 5,030,837 |  |  | $ | 113,431 |  |  | $ | 326,570 |  |  | $ | 5,470,838 |
Secured Borrowing Facility |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 157 |  |  | 157 |
Total |  | $ | — |  |  | $ | 4,086,956 |  |  | $ | 4,086,956 |  |  | $ | 5,030,837 |  |  | $ | 113,431 |  |  | $ | 326,727 |  |  | $ | 5,470,995 |
|  | December 31, 2017
|  | Debt Outstanding |  | Carrying Amount of Assets Securing Debt Outstanding
|  | Short-Term |  | Long-Term |  | Total |  | Loans |  | Restricted Cash |  | Other Assets(1) |  | Total
Secured borrowings: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Private Education Loan term securitizations |  | $ | — |  |  | $ | 3,078,731 |  |  | $ | 3,078,731 |  |  | $ | 3,691,024 |  |  | $ | 95,966 |  |  | $ | 240,208 |  |  | $ | 4,027,198 |
Secured Borrowing Facility |  | — |  |  | — |  |  | — |  |  | — |  |  | 1,017 |  |  | 161 |  |  | 1,178 |
Total |  | $ | — |  |  | $ | 3,078,731 |  |  | $ | 3,078,731 |  |  | $ | 3,691,024 |  |  | $ | 96,983 |  |  | $ | 240,369 |  |  | $ | 4,028,376 |
________ (1) Other assets primarily represent accrued interest receivable. Other Borrowing Sources We maintain discretionary uncommitted Federal Funds lines of credit with various correspondent banks, which totaled $125 million at December 31, 2018. The interest rate we are charged on these lines of credit is priced at Fed Funds plus a spread at the time of borrowing, and is payable daily. We did not utilize these lines of credit in the years ended December 31, 2018 and 2017. We established an account at the FRB to meet eligibility requirements for access to the Primary Credit borrowing facility at the FRB’s Discount Window (the “Window”). The Primary Credit borrowing facility is a lending program available to depository institutions that are in generally sound financial condition. All borrowings at the Window must be fully collateralized. We can pledge asset-backed and mortgage-backed securities, as well as FFELP Loans and Private Education Loans, to the FRB as collateral for borrowings at the Window. Generally, collateral value is assigned based on the estimated fair value of the pledged assets. At December 31, 2018 and December 31, 2017, the value of our pledged collateral at the FRB totaled $3.1 billion and $2.6 billion, respectively. The interest rate charged to us is the discount rate set by the FRB. We did not utilize this facility in the years ended December 31, 2018 and 2017.

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- Definition The entire disclosure for information about short-term and long-term debt arrangements, which includes amounts of borrowings under each line of credit, note payable, commercial paper issue, bonds indenture, debenture issue, own-share lending arrangements and any other contractual agreement to repay funds, and about the underlying arrangements, rationale for a classification as long-term, including repayment terms, interest rates, collateral provided, restrictions on use of assets and activities, whether or not in compliance with debt covenants, and other matters important to users of the financial statements, such as the effects of refinancing and noncompliance with debt covenants. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -URI http://asc.fasb.org/topic&trid=2208564 + Details
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