    <SEC-DOCUMENT>0000018349-23-000031-index.html : 20230216
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    <ACCEPTANCE-DATETIME>20230216162529
    ACCESSION NUMBER:		0000018349-23-000031
    CONFORMED SUBMISSION TYPE:	8-K
    PUBLIC DOCUMENT COUNT:		28
    CONFORMED PERIOD OF REPORT:	20230216
    ITEM INFORMATION:		Entry into a Material Definitive Agreement
    ITEM INFORMATION:		Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant
    ITEM INFORMATION:		Financial Statements and Exhibits
    FILED AS OF DATE:		20230216
    DATE AS OF CHANGE:		20230216

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			SYNOVUS FINANCIAL CORP
    		CENTRAL INDEX KEY:			0000018349
    		STANDARD INDUSTRIAL CLASSIFICATION:	NATIONAL COMMERCIAL BANKS [6021]
    		IRS NUMBER:				581134883
    		STATE OF INCORPORATION:			GA
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		8-K
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-10312
    		FILM NUMBER:		23638836

    	BUSINESS ADDRESS:
    		STREET 1:		1111 BAY AVENUE
    		STREET 2:		STE 500
    		CITY:			COLUMBUS
    		STATE:			GA
    		ZIP:			31901
    		BUSINESS PHONE:		7066492311

    	MAIL ADDRESS:
    		STREET 1:		1111 BAY AVENUE
    		STREET 2:		STE 500
    		CITY:			COLUMBUS
    		STATE:			GA
    		ZIP:			31901

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	CB&T BANCSHARES INC
    		DATE OF NAME CHANGE:	19890912
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>8-K
    <SEQUENCE>1
    <FILENAME>syn-20230216.htm
    <DESCRIPTION>8-K
    <TEXT>
    Document 1 - file: syn-20230216.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-4.1
    <SEQUENCE>2
    <FILENAME>exhibit41.htm
    <DESCRIPTION>EX-4.1
    <TEXT>
    Document 2 - file: exhibit41.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.SCH
    <SEQUENCE>3
    <FILENAME>syn-20230216.xsd
    <DESCRIPTION>XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT
    <TEXT>
    Document 3 - file: syn-20230216.xsd

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    <DOCUMENT>
    <TYPE>EX-101.DEF
    <SEQUENCE>4
    <FILENAME>syn-20230216_def.xml
    <DESCRIPTION>XBRL TAXONOMY EXTENSION DEFINITION LINKBASE DOCUMENT
    <TEXT>
    Document 4 - file: syn-20230216_def.xml

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    <DOCUMENT>
    <TYPE>EX-101.LAB
    <SEQUENCE>5
    <FILENAME>syn-20230216_lab.xml
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    <TEXT>
    Document 5 - file: syn-20230216_lab.xml

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    <DOCUMENT>
    <TYPE>EX-101.PRE
    <SEQUENCE>6
    <FILENAME>syn-20230216_pre.xml
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    <TEXT>
    Document 6 - file: syn-20230216_pre.xml

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    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>7
    <FILENAME>exhibit41001.jpg
    <TEXT>
    Document 7 - file: exhibit41001.jpg

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    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>8
    <FILENAME>exhibit41002.jpg
    <TEXT>
    Document 8 - file: exhibit41002.jpg

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    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>9
    <FILENAME>exhibit41003.jpg
    <TEXT>
    Document 9 - file: exhibit41003.jpg

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    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>10
    <FILENAME>exhibit41004.jpg
    <TEXT>
    Document 10 - file: exhibit41004.jpg

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    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>11
    <FILENAME>exhibit41005.jpg
    <TEXT>
    Document 11 - file: exhibit41005.jpg

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    <DOCUMENT>
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    <SEQUENCE>12
    <FILENAME>exhibit41006.jpg
    <TEXT>
    Document 12 - file: exhibit41006.jpg

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    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>13
    <FILENAME>exhibit41007.jpg
    <TEXT>
    Document 13 - file: exhibit41007.jpg

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    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>14
    <FILENAME>exhibit41008.jpg
    <TEXT>
    Document 14 - file: exhibit41008.jpg

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    <SEQUENCE>15
    <FILENAME>exhibit41009.jpg
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    <TYPE>GRAPHIC
    <SEQUENCE>16
    <FILENAME>exhibit41010.jpg
    <TEXT>
    Document 16 - file: exhibit41010.jpg

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    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>17
    <FILENAME>exhibit41011.jpg
    <TEXT>
    Document 17 - file: exhibit41011.jpg

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    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>18
    <FILENAME>exhibit41012.jpg
    <TEXT>
    Document 18 - file: exhibit41012.jpg

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    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>19
    <FILENAME>exhibit41013.jpg
    <TEXT>
    Document 19 - file: exhibit41013.jpg

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    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>20
    <FILENAME>exhibit41014.jpg
    <TEXT>
    Document 20 - file: exhibit41014.jpg

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    <TYPE>XML
    <SEQUENCE>21
    <FILENAME>R1.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 21 - file: R1.htm

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    <TYPE>XML
    <SEQUENCE>22
    <FILENAME>syn-20230216_htm.xml
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
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    Document 22 - RAW XML: syn-20230216_htm.xml

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    <DOCUMENT>
    <TYPE>EXCEL
    <SEQUENCE>23
    <FILENAME>Financial_Report.xlsx
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 23 - file: Financial_Report.xlsx

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    <TYPE>XML
    <SEQUENCE>24
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    <TEXT>
    Document 24 - file: Show.js

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    <TYPE>XML
    <SEQUENCE>25
    <FILENAME>report.css
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    <TEXT>
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    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>26
    <FILENAME>FilingSummary.xml
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    <TEXT>
    Document 26 - file: FilingSummary.html

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    <TYPE>JSON
    <SEQUENCE>28
    <FILENAME>MetaLinks.json
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    <TEXT>
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    <TYPE>ZIP
    <SEQUENCE>29
    <FILENAME>0000018349-23-000031-xbrl.zip
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