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SEGMENT AND RELATED INFORMATION (Tables)

9 Months Ended

Sep. 30, 2025

Segment Reporting [Abstract]

Schedule of Financial Data by Business Segment

Financial data for our business segments follows:

			Three Months Ended September 30, 2025
			Pipeline						Gathering						Total Reportable Segments						Eliminations						Total Consolidated
			(millions)
Revenues
Operating revenues			$	169					$	145					$	314					$	—					$	314
Operating Expenses
Operation and maintenance			32						52						84						—						84
Depreciation and amortization			27						38						65						—						65
Taxes other than income			7						3						10						—						10
Other (Income) and Deductions
Interest expense			14						26						40						—						40
Interest income			—						(1)						(1)						—						(1)
Earnings from equity method investees			(34)						—						(34)						—						(34)
Other income			—						(3)						(3)						—						(3)
Income tax expense			28						7						35						—						35
Less: Net Income Attributable to Noncontrolling Interests			3						—						3						—						3
Net Income Attributable to DT Midstream			$	92					$	23					$	115					$	—					$	115
Capital expenditures			$	63					$	80					$	143					$	—					$	143

			Three Months Ended September 30, 2024
			Pipeline						Gathering						Total Reportable Segments						Eliminations						Total Consolidated
			(millions)
Revenues
Operating revenues			$	112					$	136					$	248					$	—					$	248
Operating Expenses
Operation and maintenance			17						46						63						—						63
Depreciation and amortization			18						35						53						—						53
Taxes other than income			5						5						10						—						10
Other (Income) and Deductions
Interest expense			12						26						38						—						38
Interest income			—						(1)						(1)						—						(1)
Earnings from equity method investees			(40)						—						(40)						—						(40)
Loss from financing activities			2						2						4						—						4
Income tax expense			24						6						30						—						30
Less: Net Income Attributable to Noncontrolling Interests			3						—						3						—						3
Net Income Attributable to DT Midstream			$	71					$	17					$	88					$	—					$	88
Capital expenditures			$	14					$	67					$	81					$	—					$	81

			Nine Months Ended September 30, 2025
			Pipeline						Gathering						Total Reportable Segments						Eliminations						Total Consolidated
			(millions)
Revenues
Operating revenues			$	514					$	412					$	926					$	—					$	926
Operating Expenses
Operation and maintenance			98						144						242						—						242
Depreciation and amortization			83						108						191						—						191
Taxes other than income			23						12						35						—						35
Other (Income) and Deductions
Interest expense			38						82						120						—						120
Interest income			(1)						(1)						(2)						—						(2)
Earnings from equity method investees			(101)						—						(101)						—						(101)
Other income			—						(3)						(3)						—						(3)
Income tax expense			87						17						104						—						104
Less: Net Income Attributable to Noncontrolling Interests			10						—						10						—						10
Net Income Attributable to DT Midstream			$	277					$	53					$	330					$	—					$	330
Capital expenditures			$	107					$	188					$	295					$	—					$	295
			September 30, 2025
Investments in equity method investees			$	1,262					$	—					$	1,262					$	—					$	1,262
Total Assets			$	5,299					$	4,762					$	10,061					$	—					$	10,061

			Nine Months Ended September 30, 2024
			Pipeline						Gathering						Total Reportable Segments						Eliminations						Total Consolidated
			(millions)
Revenues
Operating revenues			$	328					$	404					$	732					$	—					$	732
Operating Expenses
Operation and maintenance			48						121						169						—						169
Depreciation and amortization			55						101						156						—						156
Taxes other than income			16						15						31						—						31
Other (Income) and Deductions
Interest expense			37						80						117						—						117
Interest income			(1)						(1)						(2)						—						(2)
Earnings from equity method investees			(125)						—						(125)						—						(125)
Loss from financing activities			2						2						4						—						4
Other income			(2)						(1)						(3)						—						(3)
Income tax expense			72						22						94						—						94
Less: Net Income Attributable to Noncontrolling Interests			10						—						10						—						10
Net Income Attributable to DT Midstream			$	216					$	65					$	281					$	—					$	281
Capital expenditures			$	53					$	207					$	260					$	—					$	260
			December 31, 2024
Investments in equity method investees			$	1,297					$	—					$	1,297					$	—					$	1,297
Total Assets			$	5,274					$	4,661					$	9,935					$	—					$	9,935

X

- Definition

Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 25
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-25

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 22
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-22

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 30
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-30

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- References

No definition available.

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