    <SEC-DOCUMENT>0001018164-24-000034-index.html : 20240503
    <SEC-HEADER>0001018164-24-000034.hdr.sgml : 20240503
    <ACCEPTANCE-DATETIME>20240503104523
    ACCESSION NUMBER:		0001018164-24-000034
    CONFORMED SUBMISSION TYPE:	8-K
    PUBLIC DOCUMENT COUNT:		35
    CONFORMED PERIOD OF REPORT:	20240503
    ITEM INFORMATION:		Regulation FD Disclosure
    ITEM INFORMATION:		Financial Statements and Exhibits
    FILED AS OF DATE:		20240503
    DATE AS OF CHANGE:		20240503

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			WILLIS LEASE FINANCE CORP
    		CENTRAL INDEX KEY:			0001018164
    		STANDARD INDUSTRIAL CLASSIFICATION:	WHOLESALE-MACHINERY, EQUIPMENT & SUPPLIES [5080]
    		ORGANIZATION NAME:           	07 Trade & Services
    		IRS NUMBER:				680070656
    		STATE OF INCORPORATION:			DE
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		8-K
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-15369
    		FILM NUMBER:		24911392

    	BUSINESS ADDRESS:
    		STREET 1:		4700 LYONS TECHNOLOGY PARKWAY
    		CITY:			COCONUT CREEK
    		STATE:			FL
    		ZIP:			33073
    		BUSINESS PHONE:		5613499989

    	MAIL ADDRESS:
    		STREET 1:		4700 LYONS TECHNOLOGY PARKWAY
    		CITY:			COCONUT CREEK
    		STATE:			FL
    		ZIP:			33073
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>8-K
    <SEQUENCE>1
    <FILENAME>wlfc-20240503.htm
    <DESCRIPTION>8-K
    <TEXT>
    Document 1 - file: wlfc-20240503.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.1
    <SEQUENCE>2
    <FILENAME>wlfccompanyupdatemay3202.htm
    <DESCRIPTION>EX-99.1
    <TEXT>
    Document 2 - file: wlfccompanyupdatemay3202.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.SCH
    <SEQUENCE>3
    <FILENAME>wlfc-20240503.xsd
    <DESCRIPTION>XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT
    <TEXT>
    Document 3 - file: wlfc-20240503.xsd

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.LAB
    <SEQUENCE>4
    <FILENAME>wlfc-20240503_lab.xml
    <DESCRIPTION>XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT
    <TEXT>
    Document 4 - file: wlfc-20240503_lab.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.PRE
    <SEQUENCE>5
    <FILENAME>wlfc-20240503_pre.xml
    <DESCRIPTION>XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT
    <TEXT>
    Document 5 - file: wlfc-20240503_pre.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>6
    <FILENAME>wlfccompanyupdatemay3202001.jpg
    <TEXT>
    Document 6 - file: wlfccompanyupdatemay3202001.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>7
    <FILENAME>wlfccompanyupdatemay3202002.jpg
    <TEXT>
    Document 7 - file: wlfccompanyupdatemay3202002.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>8
    <FILENAME>wlfccompanyupdatemay3202003.jpg
    <TEXT>
    Document 8 - file: wlfccompanyupdatemay3202003.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>9
    <FILENAME>wlfccompanyupdatemay3202004.jpg
    <TEXT>
    Document 9 - file: wlfccompanyupdatemay3202004.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>10
    <FILENAME>wlfccompanyupdatemay3202005.jpg
    <TEXT>
    Document 10 - file: wlfccompanyupdatemay3202005.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>11
    <FILENAME>wlfccompanyupdatemay3202006.jpg
    <TEXT>
    Document 11 - file: wlfccompanyupdatemay3202006.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>12
    <FILENAME>wlfccompanyupdatemay3202007.jpg
    <TEXT>
    Document 12 - file: wlfccompanyupdatemay3202007.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>13
    <FILENAME>wlfccompanyupdatemay3202008.jpg
    <TEXT>
    Document 13 - file: wlfccompanyupdatemay3202008.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>14
    <FILENAME>wlfccompanyupdatemay3202009.jpg
    <TEXT>
    Document 14 - file: wlfccompanyupdatemay3202009.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>15
    <FILENAME>wlfccompanyupdatemay3202010.jpg
    <TEXT>
    Document 15 - file: wlfccompanyupdatemay3202010.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>16
    <FILENAME>wlfccompanyupdatemay3202011.jpg
    <TEXT>
    Document 16 - file: wlfccompanyupdatemay3202011.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>17
    <FILENAME>wlfccompanyupdatemay3202012.jpg
    <TEXT>
    Document 17 - file: wlfccompanyupdatemay3202012.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>18
    <FILENAME>wlfccompanyupdatemay3202013.jpg
    <TEXT>
    Document 18 - file: wlfccompanyupdatemay3202013.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>19
    <FILENAME>wlfccompanyupdatemay3202014.jpg
    <TEXT>
    Document 19 - file: wlfccompanyupdatemay3202014.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>20
    <FILENAME>wlfccompanyupdatemay3202015.jpg
    <TEXT>
    Document 20 - file: wlfccompanyupdatemay3202015.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>21
    <FILENAME>wlfccompanyupdatemay3202016.jpg
    <TEXT>
    Document 21 - file: wlfccompanyupdatemay3202016.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>22
    <FILENAME>wlfccompanyupdatemay3202017.jpg
    <TEXT>
    Document 22 - file: wlfccompanyupdatemay3202017.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>23
    <FILENAME>wlfccompanyupdatemay3202018.jpg
    <TEXT>
    Document 23 - file: wlfccompanyupdatemay3202018.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>24
    <FILENAME>wlfccompanyupdatemay3202019.jpg
    <TEXT>
    Document 24 - file: wlfccompanyupdatemay3202019.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>25
    <FILENAME>wlfccompanyupdatemay3202020.jpg
    <TEXT>
    Document 25 - file: wlfccompanyupdatemay3202020.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>26
    <FILENAME>wlfccompanyupdatemay3202021.jpg
    <TEXT>
    Document 26 - file: wlfccompanyupdatemay3202021.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>28
    <FILENAME>R1.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 28 - file: R1.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EXCEL
    <SEQUENCE>29
    <FILENAME>Financial_Report.xlsx
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 29 - file: Financial_Report.xlsx

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>30
    <FILENAME>Show.js
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 30 - file: Show.js

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>31
    <FILENAME>report.css
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 31 - file: report.css

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>33
    <FILENAME>FilingSummary.xml
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 33 - file: FilingSummary.html

    Document 33 - RAW XML: FilingSummary.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>JSON
    <SEQUENCE>35
    <FILENAME>MetaLinks.json
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 35 - file: MetaLinks.json

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>ZIP
    <SEQUENCE>36
    <FILENAME>0001018164-24-000034-xbrl.zip
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 36 - file: 0001018164-24-000034-xbrl.zip

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>38
    <FILENAME>wlfc-20240503_htm.xml
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 38 - file: wlfc-20240503_htm.html

    Document 38 - RAW XML: wlfc-20240503_htm.xml

    </DOCUMENT>
    </SEC-DOCUMENT>