XML 40 R29.htm IDEA: XBRL DOCUMENT
v3.21.2

Deposits (Tables) | 9 Months Ended
--- | ---
Sep. 30, 2021
Banking and Thrift, Other Disclosures [Abstract] |
Schedule of deposits | The following table summarizes total deposits at September 30, 2021 and December 31, 2020.
|  | September 30, |  |  | December 31, |
|  | 2021 |  |  | 2020 |
Deposits - interest bearing |  | $ | 20,890,292 |  |  |  | $ | 22,664,899 |  |
Deposits - non-interest bearing |  | 568 |  |  |  | 1,140 |  |
Total deposits |  | $ | 20,890,860 |  |  |  | $ | 22,666,039 |  |
Interest bearing deposits | Interest bearing deposits at September 30, 2021 and December 31, 2020 are summarized as follows:
|  | September 30, 2021 |  | December 31, 2020
|  | Amount |  | Qtr.-End Weighted Average Stated Rate(1) |  | Amount |  | Year-End Weighted Average Stated Rate(1)
Money market |  | $ | 10,082,114 |  |  | 0.71 | % |  | $ | 10,159,657 |  |  | 0.83 | %
Savings |  | 956,571 |  |  | 0.44 |  |  | 907,976 |  |  | 0.55 |
Certificates of deposit |  | 9,851,607 |  |  | 1.16 |  |  | 11,597,266 |  |  | 1.34 |
Deposits - interest bearing |  | $ | 20,890,292 |  |  |  |  | $ | 22,664,899 |  |  |
____________ (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: | dtr-types: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: | dtr-types: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