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SEGMENT AND RELATED INFORMATION
 9 Months Ended
Sep. 30, 2025
Segment Reporting [Abstract]  
SEGMENT AND RELATED INFORMATION SEGMENT AND RELATED INFORMATION
We set strategic goals, allocate resources, and evaluate performance based on the following two segments: Pipeline and Gathering.
The Pipeline segment owns and operates interstate and intrastate natural gas pipelines, storage systems, and natural gas gathering lateral pipelines. The Pipeline segment also has interests in equity method investees that own and operate interstate natural gas pipelines. The segment is engaged in the transportation and storage of natural gas for intermediate and end user customers. The Midwest Pipeline Acquisition assets and results of operations after the December 31, 2024 acquisition date are presented in our Pipeline segment.
The Gathering segment owns and operates gas gathering systems. The segment is engaged in collecting natural gas from points at or near customers’ wells for delivery to plants for treating, to gathering pipelines for further gathering, or to pipelines for transportation, as well as associated ancillary services, including compression, dehydration, gas treatment, water impoundment, water transportation, water disposal, and sand mining. The Clean Fuels Gathering assets and results of operations after the July 1, 2024 acquisition date are presented in our Gathering segment.
Inter-segment billing for goods and services exchanged between segments is based upon contracted prices of the provider. Inter-segment billings were not significant for the three and nine months ended September 30, 2025 and 2024.
Financial data for our business segments follows:
Three Months Ended September 30, 2025
PipelineGathering
Total Reportable Segments
Eliminations
Total Consolidated
(millions)
Revenues
Operating revenues$169 $145 $314 $— $314 
Operating Expenses
Operation and maintenance32 52 84 — 84 
Depreciation and amortization27 38 65 — 65 
Taxes other than income7 3 10 — 10 
Other (Income) and Deductions
Interest expense14 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
PipelineGathering
Total Reportable Segments
Eliminations
Total Consolidated
(millions)
Revenues
Operating revenues$112 $136 $248 $— $248 
Operating Expenses
Operation and maintenance17 46 63 — 63 
Depreciation and amortization18 35 53 — 53 
Taxes other than income5 5 10 — 10 
Other (Income) and Deductions
Interest expense12 26 38 — 38 
Interest income— (1)(1)— (1)
Earnings from equity method investees(40)— (40)— (40)
Loss from financing activities2 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
PipelineGathering
Total Reportable Segments
Eliminations
Total Consolidated
(millions)
Revenues
Operating revenues$514 $412 $926 $— $926 
Operating Expenses
Operation and maintenance98 144 242 — 242 
Depreciation and amortization83 108 191 — 191 
Taxes other than income23 12 35 — 35 
Other (Income) and Deductions
Interest expense38 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
PipelineGathering
Total Reportable Segments
Eliminations
Total Consolidated
(millions)
Revenues
Operating revenues$328 $404 $732 $— $732 
Operating Expenses
Operation and maintenance48 121 169 — 169 
Depreciation and amortization55 101 156 — 156 
Taxes other than income16 15 31 — 31 
Other (Income) and Deductions
Interest expense37 80 117 — 117 
Interest income(1)(1)(2)— (2)
Earnings from equity method investees(125)— (125)— (125)
Loss from financing activities2 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