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Cover
6 Months Ended
Jun. 30, 2022
shares
Cover [Abstract]  
Document Type 10-Q
Document Quarterly Report true
Document Period End Date Jun. 30, 2022
Document Transition Report false
Entity File Number 001-40392
Entity Registrant Name DT Midstream, Inc.
Entity Incorporation, State or Country Code DE
Entity Tax Identification Number 38-2663964
Entity Address, Address Line One 500 Woodward Ave., Suite 2900
Entity Address, City or Town Detroit
Entity Address, State or Province MI
Entity Address, Postal Zip Code 48226-1279
City Area Code 313
Local Phone Number 402-8532
Title of 12(b) Security Common stock, par value $0.01
Trading Symbol DTM
Security Exchange Name NYSE
Entity Current Reporting Status Yes
Entity Interactive Data Current Yes
Entity Filer Category Non-accelerated Filer
Entity Small Business false
Entity Emerging Growth Company false
Entity Shell Company false
Entity Common Stock, Shares Outstanding 96,734,356
Entity Central Index Key 0001842022
Current Fiscal Year End Date --12-31
Document Fiscal Year Focus 2022
Document Fiscal Period Focus Q2
Amendment Flag false