Subsequent Event	9 Months Ended
Sep. 30, 2022
Subsequent Events [Abstract]
Subsequent Event	Subsequent Event2022-D TransactionOn October 19, 2022, we closed an SMB Private Education Loan Trust 2022-D term ABS transaction (the “2022-D Transaction”), in which an unaffiliated third-party sold to the trust approximately $1.0 billion of Private Education Loans that the third-party seller previously purchased from us on September 15, 2022. In the 2022-D Transaction, we were the sponsor, servicer and administrator, and the seller of an additional $54 million of Private Education Loans into the trust. The sale of such additional loans qualified for sale treatment and removed these loans from our balance sheet on the settlement date of the 2022-D transaction. The gain on sale of loans sold expressed as a percentage was in the single-digits and will be recognized in the fourth-quarter 2022 consolidated statements of income.

The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 855
-URI https://asc.fasb.org/topic&trid=2122774

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 855
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=6842918&loc=SL6314017-165662

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