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Fair Value Measurements - Fair Values of Financial Assets and Liabilities, Including Derivative Financial Instruments (Detail) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Earning assets: |  |
Loans held for sale | $ 0 | $ 340,389
Trading investments | 37,465 | 16,923
Accrued interest receivable, difference | 100,743 | 140,511
Tax indemnification receivable | 239,578 | 374,706
Total earning assets, difference | 3,409,977 | 4,182,834
Interest-bearing liabilities: |  |
Long-term borrowings, difference | (69,184) | (209,092)
Total interest-bearing liabilities, difference | (151,510) | (479,976)
Excess of net asset fair value over carrying value | 3,258,467 | 3,702,858
Money-market and savings accounts |  |
Interest-bearing liabilities: |  |
Certificates of deposits, difference | (24,799) | (68,927)
Certificates of Deposit |  |
Interest-bearing liabilities: |  |
Certificates of deposits, difference | (57,527) | (201,957)
Fair Value |  |
Earning assets: |  |
Loans held for sale | 0 | 3,226,029
Cash and cash equivalents | 4,334,603 | 4,455,292
Trading investments | 37,465 | 16,923
Available-for-sale investments | 2,517,956 | 1,996,634
Accrued interest receivable | 1,306,410 | 1,527,816
Tax indemnification receivable | 8,047 | 18,492
Derivative instruments | 1,322 | 729
Total | 31,856,320 | 34,126,992
Interest-bearing liabilities: |  |
Short-term borrowings | 0 | 0
Long-term borrowings | 6,000,174 | 5,398,309
Accrued interest payable | 46,600 | 60,272
Derivative instruments | 252 | 287
Total interest-bearing liabilities | 26,956,044 | 28,394,651
Fair Value | Money-market and savings accounts |  |
Interest-bearing liabilities: |  |
Deposits | 11,457,490 | 11,136,560
Fair Value | Certificates of Deposit |  |
Interest-bearing liabilities: |  |
Deposits | 9,451,528 | 11,799,223
Carrying Value |  |
Earning assets: |  |
Loans held for sale | 0 | 2,885,640
Cash and cash equivalents | 4,334,603 | 4,455,292
Trading investments | 37,465 | 16,923
Available-for-sale investments | 2,517,956 | 1,996,634
Accrued interest receivable | 1,205,667 | 1,387,305
Tax indemnification receivable | 8,047 | 18,492
Derivative instruments | 1,322 | 729
Total | 28,446,343 | 29,944,158
Interest-bearing liabilities: |  |
Short-term borrowings | 0 | 0
Long-term borrowings | 5,930,990 | 5,189,217
Accrued interest payable | 46,600 | 60,272
Derivative instruments | 252 | 287
Total interest-bearing liabilities | 26,804,534 | 27,914,675
Carrying Value | Money-market and savings accounts |  |
Interest-bearing liabilities: |  |
Deposits | 11,432,691 | 11,067,633
Carrying Value | Certificates of Deposit |  |
Interest-bearing liabilities: |  |
Deposits | 9,394,001 | 11,597,266
Private Education Loans |  |
Earning assets: |  |
Loans held for investment, net, difference | 3,294,462 | 3,687,203
Private Education Loans | Fair Value |  |
Earning assets: |  |
Private Education Loans | 22,919,836 | 22,124,171
Private Education Loans | Carrying Value |  |
Earning assets: |  |
Private Education Loans | 19,625,374 | 18,436,968
FFELP Loans |  |
Earning assets: |  |
Loans held for investment, net, difference | 12,690 | 13,449
FFELP Loans | Fair Value |  |
Earning assets: |  |
Private Education Loans | 705,644 | 748,657
FFELP Loans | Carrying Value |  |
Earning assets: |  |
Private Education Loans | 692,954 | 735,208
Credit Cards |  |
Earning assets: |  |
Loans held for investment, net, difference | 2,082 | 1,282
Credit Cards | Fair Value |  |
Earning assets: |  |
Private Education Loans | 25,037 | 12,249
Credit Cards | Carrying Value |  |
Earning assets: |  |
Private Education Loans | $ 22,955 | $ 10,967

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- Definition Fair value of financial obligations, including, but not limited to, debt instruments, derivative liabilities, federal funds purchased and sold under agreements to repurchase, securities loaned or sold under agreements to repurchase, financial instruments sold not yet purchased, guarantees, line of credit, loans and notes payable, servicing liability, and trading liabilities. + References No definition available. + Details
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- Definition Carrying amount as of the balance sheet date of income taxes previously overpaid to tax authorities (such as U.S. Federal, state and local tax authorities) representing refunds of overpayments or recoveries based on agreed-upon resolutions of disputes. Also called income tax refund receivable. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(8)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(10)) -URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910 + Details
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