SEGMENT AND RELATED INFORMATION (Tables)

3 Months Ended

Mar. 31, 2026

Segment Reporting [Abstract]

Schedule of Financial Data by Business Segment

Financial data for our business segments follows:


			Three Months Ended March 31, 2026
			Pipeline						Gathering						Total Reportable Segments						Eliminations						Total Consolidated
			(millions)
Revenues
Operating revenues			$	185					$	156					$	341					$	(5)					$	336
Operating Expenses
Operation and maintenance			35						55						90						(5)						85
Depreciation and amortization			29						40						69						—						69
Taxes other than income			9						6						15						—						15
Asset (gains) losses and impairments, net			—						1						1												1
Other (Income) and Deductions
Interest expense			14						26						40						—						40
Interest income			(1)						—						(1)						—						(1)
Earnings from equity method investees			(43)						—						(43)						—						(43)


Income tax expense			30						6						36						—						36
Less: Net Income Attributable to Noncontrolling Interests			4						—						4						—						4
Net Income Attributable to DT Midstream			$	108					$	22					$	130					$	—					$	130

Capital expenditures			$	34					$	44					$	78					$	—					$	78

			March 31, 2026
Investments in equity method investees			$	1,245					$	—					$	1,245					$	—					$	1,245
Total Assets			$	5,351					$	4,804					$	10,155					$	—					$	10,155


			Three Months Ended March 31, 2025
			Pipeline						Gathering						Total Reportable Segments						Eliminations						Total Consolidated
			(millions)
Revenues
Operating revenues			$	169					$	134					$	303					$	—					$	303
Operating Expenses
Operation and maintenance			32						46						78						—						78
Depreciation and amortization			28						35						63						—						63
Taxes other than income			9						5						14						—						14

Other (Income) and Deductions
Interest expense			13						27						40						—						40
Interest income			(1)						—						(1)						—						(1)
Earnings from equity method investees			(37)						—						(37)						—						(37)


Income tax expense			30						5						35						—						35
Less: Net Income Attributable to Noncontrolling Interests			3						—						3						—						3
Net Income Attributable to DT Midstream			$	92					$	16					$	108					$	—					$	108

Capital expenditures			$	24					$	47					$	71					$	—					$	71

			December 31, 2025
Investments in equity method investees			$	1,253					$	—					$	1,253					$	—					$	1,253
Total Assets			$	5,297					$	4,783					$	10,080					$	—					$	10,080