<SEC-DOCUMENT>0001104659-24-044308-index.html : 20240405
<SEC-HEADER>0001104659-24-044308.hdr.sgml : 20240405
<ACCEPTANCE-DATETIME>20240405163514
ACCESSION NUMBER:		0001104659-24-044308
CONFORMED SUBMISSION TYPE:	DEF 14C
PUBLIC DOCUMENT COUNT:		26
CONFORMED PERIOD OF REPORT:	20240509
FILED AS OF DATE:		20240405
DATE AS OF CHANGE:		20240405

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Ameren Illinois Co
		CENTRAL INDEX KEY:			0000018654
		STANDARD INDUSTRIAL CLASSIFICATION:	ELECTRIC & OTHER SERVICES COMBINED [4931]
		ORGANIZATION NAME:           	01 Energy & Transportation
		IRS NUMBER:				370211380
		STATE OF INCORPORATION:			IL
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		DEF 14C
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-03672
		FILM NUMBER:		24827004

	BUSINESS ADDRESS:	
		STREET 1:		10 RICHARD MARK WAY
		CITY:			COLLINSVILLE
		STATE:			IL
		ZIP:			62234
		BUSINESS PHONE:		618-343-8150

	MAIL ADDRESS:	
		STREET 1:		10 RICHARD MARK WAY
		CITY:			COLLINSVILLE
		STATE:			IL
		ZIP:			62234

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	CENTRAL ILLINOIS PUBLIC SERVICE CO
		DATE OF NAME CHANGE:	19920703
</SEC-HEADER>
<DOCUMENT>
<TYPE>DEF 14C
<SEQUENCE>1
<FILENAME>tm244296d2_def14c.htm
<DESCRIPTION>DEF 14C
<TEXT>
Document 1 - file: tm244296d2_def14c.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-101.SCH
<SEQUENCE>2
<FILENAME>ailih-20231231.xsd
<DESCRIPTION>XBRL TAXONOMY EXTENSION SCHEMA
<TEXT>
Document 2 - file: ailih-20231231.xsd

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-101.DEF
<SEQUENCE>3
<FILENAME>ailih-20231231_def.xml
<DESCRIPTION>XBRL TAXONOMY EXTENSION DEFINITION LINKBASE
<TEXT>
Document 3 - file: ailih-20231231_def.xml

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-101.LAB
<SEQUENCE>4
<FILENAME>ailih-20231231_lab.xml
<DESCRIPTION>XBRL TAXONOMY EXTENSION LABEL LINKBASE
<TEXT>
Document 4 - file: ailih-20231231_lab.xml

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-101.PRE
<SEQUENCE>5
<FILENAME>ailih-20231231_pre.xml
<DESCRIPTION>XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE
<TEXT>
Document 5 - file: ailih-20231231_pre.xml

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>6
<FILENAME>lg_amerenillinois-4c.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 6 - file: lg_amerenillinois-4c.jpg

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

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>8
<FILENAME>ic_tick-4c.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 8 - file: ic_tick-4c.jpg

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

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

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

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

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>13
<FILENAME>fc_stipwork-4c.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 13 - file: fc_stipwork-4c.jpg

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

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

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

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>17
<FILENAME>bc_earnings-4c.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 17 - file: bc_earnings-4c.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>19
<FILENAME>R1.htm
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
Document 19 - file: R1.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>20
<FILENAME>R2.htm
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
Document 20 - file: R2.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>21
<FILENAME>Show.js
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
Document 21 - file: Show.js

</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>22
<FILENAME>report.css
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
Document 22 - file: report.css

</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>24
<FILENAME>FilingSummary.xml
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
Document 24 - file: FilingSummary.html

Document 24 - RAW XML: FilingSummary.xml

</DOCUMENT>
<DOCUMENT>
<TYPE>JSON
<SEQUENCE>26
<FILENAME>MetaLinks.json
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
Document 26 - file: MetaLinks.json

</DOCUMENT>
<DOCUMENT>
<TYPE>ZIP
<SEQUENCE>27
<FILENAME>0001104659-24-044308-xbrl.zip
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
Document 27 - file: 0001104659-24-044308-xbrl.zip

</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>29
<FILENAME>tm244296d2_def14c_htm.xml
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
Document 29 - file: tm244296d2_def14c_htm.html

Document 29 - RAW XML: tm244296d2_def14c_htm.xml

</DOCUMENT>
</SEC-DOCUMENT>