    <SEC-DOCUMENT>0001628280-21-000859-index.html : 20210127
    <SEC-HEADER>0001628280-21-000859.hdr.sgml : 20210127
    <ACCEPTANCE-DATETIME>20210127164754
    ACCESSION NUMBER:		0001628280-21-000859
    CONFORMED SUBMISSION TYPE:	8-K
    PUBLIC DOCUMENT COUNT:		16
    CONFORMED PERIOD OF REPORT:	20210127
    ITEM INFORMATION:		Results of Operations and Financial Condition
    ITEM INFORMATION:		Financial Statements and Exhibits
    FILED AS OF DATE:		20210127
    DATE AS OF CHANGE:		20210127

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			SLM Corp
    		CENTRAL INDEX KEY:			0001032033
    		STANDARD INDUSTRIAL CLASSIFICATION:	PERSONAL CREDIT INSTITUTIONS [6141]
    		IRS NUMBER:				522013874
    		STATE OF INCORPORATION:			DE
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		8-K
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-13251
    		FILM NUMBER:		21560526

    	BUSINESS ADDRESS:
    		STREET 1:		300 CONTINENTAL DRIVE
    		CITY:			NEWARK
    		STATE:			DE
    		ZIP:			19713
    		BUSINESS PHONE:		(302) 283-8000

    	MAIL ADDRESS:
    		STREET 1:		300 CONTINENTAL DRIVE
    		CITY:			NEWARK
    		STATE:			DE
    		ZIP:			19713

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	SLM CORP
    		DATE OF NAME CHANGE:	20030326

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	SALLIE MAE
    		DATE OF NAME CHANGE:	20020517

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	USA EDUCATION INC
    		DATE OF NAME CHANGE:	20000801
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>8-K
    <SEQUENCE>1
    <FILENAME>slm-20210127.htm
    <DESCRIPTION>8-K
    <TEXT>
    Document 1 - file: slm-20210127.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.1
    <SEQUENCE>2
    <FILENAME>slm01272021ex991.htm
    <DESCRIPTION>EX-99.1
    <TEXT>
    Document 2 - file: slm01272021ex991.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.SCH
    <SEQUENCE>3
    <FILENAME>slm-20210127.xsd
    <DESCRIPTION>XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT
    <TEXT>
    Document 3 - file: slm-20210127.xsd

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    <DOCUMENT>
    <TYPE>EX-101.CAL
    <SEQUENCE>4
    <FILENAME>slm-20210127_cal.xml
    <DESCRIPTION>XBRL TAXONOMY EXTENSION CALCULATION LINKBASE DOCUMENT
    <TEXT>
    Document 4 - file: slm-20210127_cal.xml

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    <TYPE>EX-101.DEF
    <SEQUENCE>5
    <FILENAME>slm-20210127_def.xml
    <DESCRIPTION>XBRL TAXONOMY EXTENSION DEFINITION LINKBASE DOCUMENT
    <TEXT>
    Document 5 - file: slm-20210127_def.xml

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    <TYPE>EX-101.LAB
    <SEQUENCE>6
    <FILENAME>slm-20210127_lab.xml
    <DESCRIPTION>XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT
    <TEXT>
    Document 6 - file: slm-20210127_lab.xml

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    <TYPE>EX-101.PRE
    <SEQUENCE>7
    <FILENAME>slm-20210127_pre.xml
    <DESCRIPTION>XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT
    <TEXT>
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    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>8
    <FILENAME>smbla031.jpg
    <TEXT>
    Document 8 - file: smbla031.jpg

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    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>9
    <FILENAME>slm-20210127_htm.xml
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
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    Document 9 - RAW XML: slm-20210127_htm.xml

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    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>10
    <FILENAME>R1.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 10 - file: R1.htm

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    <DOCUMENT>
    <TYPE>EXCEL
    <SEQUENCE>11
    <FILENAME>Financial_Report.xlsx
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 11 - file: Financial_Report.xlsx

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    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>12
    <FILENAME>Show.js
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 12 - file: Show.js

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    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>13
    <FILENAME>report.css
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
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    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>14
    <FILENAME>FilingSummary.xml
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 14 - file: FilingSummary.html

    Document 14 - RAW XML: FilingSummary.xml

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    <DOCUMENT>
    <TYPE>JSON
    <SEQUENCE>16
    <FILENAME>MetaLinks.json
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 16 - file: MetaLinks.json

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    <DOCUMENT>
    <TYPE>ZIP
    <SEQUENCE>17
    <FILENAME>0001628280-21-000859-xbrl.zip
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 17 - file: 0001628280-21-000859-xbrl.zip

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