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    ACCESSION NUMBER:		0000852772-25-000039
    CONFORMED SUBMISSION TYPE:	8-K
    PUBLIC DOCUMENT COUNT:		18
    CONFORMED PERIOD OF REPORT:	20250203
    ITEM INFORMATION:		Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year
    ITEM INFORMATION:		Financial Statements and Exhibits
    FILED AS OF DATE:		20250207
    DATE AS OF CHANGE:		20250207

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			DENNY'S Corp
    		CENTRAL INDEX KEY:			0000852772
    		STANDARD INDUSTRIAL CLASSIFICATION:	RETAIL-EATING PLACES [5812]
    		ORGANIZATION NAME:           	07 Trade & Services
    		IRS NUMBER:				133487402
    		STATE OF INCORPORATION:			DE
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		8-K
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	000-18051
    		FILM NUMBER:		25599532

    	BUSINESS ADDRESS:
    		STREET 1:		203 EAST MAIN STREET
    		CITY:			SPARTANBURG
    		STATE:			SC
    		ZIP:			29319
    		BUSINESS PHONE:		8645978000

    	MAIL ADDRESS:
    		STREET 1:		203 EAST MAIN STREET
    		CITY:			SPARTANBURG
    		STATE:			SC
    		ZIP:			29319

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	DENNYS CORP
    		DATE OF NAME CHANGE:	20020801

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	ADVANTICA RESTAURANT GROUP INC
    		DATE OF NAME CHANGE:	19980107

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	FLAGSTAR COMPANIES INC
    		DATE OF NAME CHANGE:	19930722
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    <TYPE>8-K
    <SEQUENCE>1
    <FILENAME>denn-20250203.htm
    <DESCRIPTION>8-K
    <TEXT>
    Document 1 - file: denn-20250203.htm

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    <DOCUMENT>
    <TYPE>EX-3.1
    <SEQUENCE>2
    <FILENAME>dennbylawamendmentfeb25.htm
    <DESCRIPTION>EX-3.1
    <TEXT>
    Document 2 - file: dennbylawamendmentfeb25.htm

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    <SEQUENCE>3
    <FILENAME>denn-20250203.xsd
    <DESCRIPTION>XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT
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    <SEQUENCE>5
    <FILENAME>denn-20250203_pre.xml
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    <TEXT>
    Document 5 - file: denn-20250203_pre.xml

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    <FILENAME>dennbylawamendmentfeb25001.jpg
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    <SEQUENCE>8
    <FILENAME>dennbylawamendmentfeb25002.jpg
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    <SEQUENCE>9
    <FILENAME>dennbylawamendmentfeb25003.jpg
    <TEXT>
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    <TYPE>XML
    <SEQUENCE>11
    <FILENAME>R1.htm
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    <TEXT>
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    <DOCUMENT>
    <TYPE>EXCEL
    <SEQUENCE>12
    <FILENAME>Financial_Report.xlsx
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    <TEXT>
    Document 12 - file: Financial_Report.xlsx

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    <SEQUENCE>13
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    <TEXT>
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    <SEQUENCE>14
    <FILENAME>report.css
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    <TEXT>
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    <TYPE>XML
    <SEQUENCE>16
    <FILENAME>FilingSummary.xml
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    <TEXT>
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    Document 16 - RAW XML: FilingSummary.xml

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    <TYPE>JSON
    <SEQUENCE>18
    <FILENAME>MetaLinks.json
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    <TEXT>
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    <TYPE>ZIP
    <SEQUENCE>19
    <FILENAME>0000852772-25-000039-xbrl.zip
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    <FILENAME>denn-20250203_htm.xml
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