<SEC-DOCUMENT>0001140361-23-024278-index.html : 20230512
<SEC-HEADER>0001140361-23-024278.hdr.sgml : 20230512
<ACCEPTANCE-DATETIME>20230512085721
ACCESSION NUMBER:		0001140361-23-024278
CONFORMED SUBMISSION TYPE:	8-K
PUBLIC DOCUMENT COUNT:		21
CONFORMED PERIOD OF REPORT:	20230510
ITEM INFORMATION:		Regulation FD Disclosure
ITEM INFORMATION:		Financial Statements and Exhibits
FILED AS OF DATE:		20230512
DATE AS OF CHANGE:		20230512

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MDU RESOURCES GROUP INC
		CENTRAL INDEX KEY:			0000067716
		STANDARD INDUSTRIAL CLASSIFICATION:	MINING, QUARRYING OF NONMETALLIC MINERALS (NO FUELS) [1400]
		IRS NUMBER:				301133956
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		8-K
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-03480
		FILM NUMBER:		23913446

	BUSINESS ADDRESS:	
		STREET 1:		1200 WEST CENTURY AVENUE
		CITY:			BISMARCK
		STATE:			ND
		ZIP:			58503
		BUSINESS PHONE:		701-530-1000

	MAIL ADDRESS:	
		STREET 1:		1200 WEST CENTURY AVENUE
		CITY:			BISMARCK
		STATE:			ND
		ZIP:			58503

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	MONTANA DAKOTA UTILITIES CO
		DATE OF NAME CHANGE:	19850429
</SEC-HEADER>
<DOCUMENT>
<TYPE>8-K
<SEQUENCE>1
<FILENAME>ny20008720x1_8k.htm
<DESCRIPTION>FORM 8-K
<TEXT>
Document 1 - file: ny20008720x1_8k.htm
</DOCUMENT> <DOCUMENT> <TYPE>EX-99.1 <SEQUENCE>2 <FILENAME>ny20008720x1_ex99-1.htm <DESCRIPTION>EXHIBIT 99.1 <TEXT> Document 2 - file: ny20008720x1_ex99-1.htm
</DOCUMENT> <DOCUMENT> <TYPE>EX-99.2 <SEQUENCE>3 <FILENAME>ny20008720x1_ex99-2.htm <DESCRIPTION>EXHIBIT 99.2 <TEXT> Document 3 - file: ny20008720x1_ex99-2.htm
</DOCUMENT> <DOCUMENT> <TYPE>EX-101.SCH <SEQUENCE>4 <FILENAME>mdu-20230510.xsd <DESCRIPTION>XBRL TAXONOMY EXTENSION SCHEMA <TEXT> Document 4 - file: mdu-20230510.xsd
</DOCUMENT> <DOCUMENT> <TYPE>EX-101.LAB <SEQUENCE>5 <FILENAME>mdu-20230510_lab.xml <DESCRIPTION>XBRL TAXONOMY EXTENSION LABEL LINKBASE <TEXT> Document 5 - file: mdu-20230510_lab.xml
</DOCUMENT> <DOCUMENT> <TYPE>EX-101.PRE <SEQUENCE>6 <FILENAME>mdu-20230510_pre.xml <DESCRIPTION>XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE <TEXT> Document 6 - file: mdu-20230510_pre.xml
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>7 <FILENAME>logo_kniferiver.jpg <TEXT> Document 7 - file: logo_kniferiver.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>8 <FILENAME>logo_mdu.jpg <TEXT> Document 8 - file: logo_mdu.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>9 <FILENAME>ny20008720x1_ex99-2img01.jpg <TEXT> Document 9 - file: ny20008720x1_ex99-2img01.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>10 <FILENAME>ny20008720x1_map01.jpg <TEXT> Document 10 - file: ny20008720x1_map01.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>11 <FILENAME>ny20008720x1_map02.jpg <TEXT> Document 11 - file: ny20008720x1_map02.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>12 <FILENAME>sig_briangray.jpg <TEXT> Document 12 - file: sig_briangray.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>13 <FILENAME>sig_davidgoodin.jpg <TEXT> Document 13 - file: sig_davidgoodin.jpg
</DOCUMENT> <DOCUMENT> <TYPE>XML <SEQUENCE>14 <FILENAME>R1.htm <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 14 - file: R1.htm
</DOCUMENT> <DOCUMENT> <TYPE>XML <SEQUENCE>15 <FILENAME>ny20008720x1_8k_htm.xml <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 15 - file: ny20008720x1_8k_htm.html
Document 15 - RAW XML: ny20008720x1_8k_htm.xml
</DOCUMENT> <DOCUMENT> <TYPE>EXCEL <SEQUENCE>16 <FILENAME>Financial_Report.xlsx <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 16 - file: Financial_Report.xlsx
</DOCUMENT> <DOCUMENT> <TYPE>XML <SEQUENCE>17 <FILENAME>Show.js <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 17 - file: Show.js
</DOCUMENT> <DOCUMENT> <TYPE>XML <SEQUENCE>18 <FILENAME>report.css <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 18 - file: report.css
</DOCUMENT> <DOCUMENT> <TYPE>XML <SEQUENCE>19 <FILENAME>FilingSummary.xml <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 19 - file: FilingSummary.html
Document 19 - RAW XML: FilingSummary.xml
</DOCUMENT> <DOCUMENT> <TYPE>JSON <SEQUENCE>21 <FILENAME>MetaLinks.json <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 21 - file: MetaLinks.json
</DOCUMENT> <DOCUMENT> <TYPE>ZIP <SEQUENCE>22 <FILENAME>0001140361-23-024278-xbrl.zip <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 22 - file: 0001140361-23-024278-xbrl.zip
</DOCUMENT> </SEC-DOCUMENT>