Private Education Loan Securitization	6 Months Ended
Private Education Loan Securitization	Jun. 30, 2015
Transfers and Servicing of Financial Assets [Abstract]
Private Education Loan Securitization	Private Education Loan Securitization On April 23, 2015, we sold $738 million of Private Education Loans through a securitization transaction to qualified institutional buyers. The transaction removed the principal balance of the loans backing the securitization trust from our balance sheet on the settlement date. We will continue to service the loans in the trust. We recorded a pre-tax gain on the sale of $77 million, net of closing adjustments and transaction costs, a 10.4 percent premium over the loans’ book value.

The entire disclosure for a transferor's continuing involvement in financial assets that it has transferred in a securitization or asset-backed financing arrangement, the nature of any restrictions on assets reported by an entity in its statement of financial position that relate to a transferred financial asset (including the carrying amounts of such assets), how servicing assets and servicing liabilities are reported, and (for securitization or asset-backed financing arrangements accounted for as sales) when a transferor has continuing involvement with the transferred financial assets and transfers of financial assets accounted for as secured borrowings, how the transfer of financial assets affects an entity's financial position, financial performance, and cash flows.