XML 40 R28.htm IDEA: XBRL DOCUMENT
v3.20.2

Deposits (Tables) | 9 Months Ended
--- | ---
Sep. 30, 2020
Banking and Thrift, Other Disclosures [Abstract] |
Schedule of deposits | The following table summarizes total deposits at September 30, 2020 and December 31, 2019.
|  | September 30, |  |  | December 31, |
|  | 2020 |  |  | 2019 |
Deposits - interest bearing |  | $ | 23,109,438 |  |  |  | $ | 24,282,906 |  |
Deposits - non-interest bearing |  | 485 |  |  |  | 1,077 |  |
Total deposits |  | $ | 23,109,923 |  |  |  | $ | 24,283,983 |  |
Interest bearing deposits | Interest bearing deposits at September 30, 2020 and December 31, 2019 are summarized as follows:
|  | September 30, 2020 |  |  |  | December 31, 2019 |  |  |
|  | Amount |  | Qtr.-End Weighted Average Stated Rate(1) |  | Amount |  | Year-End Weighted Average Stated Rate(1) |
Money market |  | $ | 10,003,940 |  |  | 0.90 | % |  | $ | 9,616,547 |  |  | 2.04 | % |
Savings |  | 866,611 |  |  | 0.69 |  |  | 718,616 |  |  | 1.71 |  |
Certificates of deposit |  | 12,238,887 |  |  | 1.41 |  |  | 13,947,743 |  |  | 2.44 |  |
Deposits - interest bearing |  | $ | 23,109,438 |  |  |  |  | $ | 24,282,906 |  |  |  |
____________ (1) Includes the effect of interest rate swaps in effective hedge relationships.

X
- Definition [Table Text Block] for Interest Bearing Deposits [Table] + References No definition available. + Details
Name: | slm_InterestBearingDepositsTableTextBlock
Namespace Prefix: | slm_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Schedule of Deposits [Table Text Block] + References No definition available. + Details
Name: | slm_ScheduleofDepositsTableTextBlock
Namespace Prefix: | slm_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_BankingAndThriftOtherDisclosuresAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration