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Income Taxes	3 Months Ended
	Mar. 31, 2023
Income Tax Disclosure [Abstract]
Income Taxes	INCOME TAXES Effective Tax Rates DT Midstream records income taxes during the interim period using an estimated annual effective tax rate ("ETR") and recognizes specific events discretely as they occur. The interim period ETRs of DT Midstream are 32% and 23% for the three months ended March 31, 2023 and 2022, respectively. The difference between the interim ETRs and federal statutory rate of 21% is primarily related to state income taxes. The increase in the interim ETRs for the comparative period is driven by remeasurements of state deferred taxes for changes in tax status and apportionment rates.

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- Definition

The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 21
-URI https://asc.fasb.org/extlink&oid=121826272&loc=d3e32857-109319

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-Section S99
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