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Segment and Related Information
 12 Months Ended
Dec. 31, 2023
Segment Reporting [Abstract]  
Segment and Related Information SEGMENT AND RELATED INFORMATION
We set strategic goals, allocate resources, and evaluate performance based on the following structure:
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. During the three months ended March 31, 2023, we completed the conversion of the Michigan System from gathering to dry gas transmission service and began providing services under a new long-term dry gas transmission contract. For the year ended December 31, 2023, the Michigan System financial results are presented in the Pipeline segment. The prior years' comparative activity was for gathering services and therefore was not revised from presentation in the Gathering 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.
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 years ended December 31, 2023, 2022 and 2021.
Financial data for our business segments follows:
Year Ended December 31, 2023
PipelineGatheringEliminationsTotal
(millions)
Operating revenues$377 $545 $— $922 
Operation and maintenance55 190 — 245 
Depreciation and amortization69 113 — 182 
Taxes other than income15 13 — 28 
Asset (gains) losses and impairments, net(4)— — (4)
Operating Income 242 229 — 471 
Interest expense55 95 — 150 
Interest income(1)— — (1)
Earnings from equity method investees(177)— — (177)
Other (income) and expense— (1)— (1)
Income Tax Expense 75 29 — 104 
Net Income 290 106 — 396 
Less: Net Income Attributable to Noncontrolling Interests12 — — 12 
Net Income Attributable to DT Midstream$278 $106 $— $384 
Capital expenditures$255 $517 $— $772 
December 31, 2023
Investments in equity method investees$1,762 $— $— $1,762 
Goodwill53 420 — 473 
Total Assets$4,439 $4,543 $— $8,982 
Year Ended December 31, 2022
PipelineGatheringEliminationsTotal
(millions)
Operating revenues$339 $581 $— $920 
Operation and maintenance54 213 — 267 
Depreciation and amortization63 107 — 170 
Taxes other than income14 14 — 28 
Asset (gains) losses and impairments, net(6)(17)— (23)
Operating Income 214 264 — 478 
Interest expense57 80 — 137 
Interest income(1)(2)— (3)
Earnings from equity method investees(150)— — (150)
Loss from financing activities6 7 — 13 
Other (income) and expense— (1)— (1)
Income Tax Expense 62 38 — 100 
Net Income 240 142 — 382 
Less: Net Income Attributable to Noncontrolling Interests12 — — 12 
Net Income Attributable to DT Midstream$228 $142 $— $370 
Capital expenditures and acquisitions$638 $252 $— $890 
December 31, 2022
Investments in equity method investees$2,200 $— $— $2,200 
Goodwill53 420 — 473 
Total Assets$4,625 $4,208 $— $8,833 

Year Ended December 31, 2021
PipelineGatheringEliminationsTotal
(millions)
Operating revenues$307 $534 $(1)$840 
Operation and maintenance59 173 (1)231 
Depreciation and amortization63 103 — 166 
Taxes other than income13 11 — 24 
Asset (gains) losses and impairments, net— 17 — 17 
Operating Income 172 230 — 402 
Interest expense51 61 — 112 
Interest income(1)(3)— (4)
Earnings from equity method investees(126)— — (126)
Other (income) and expense(3)1 — (2)
Income Tax Expense 62 42 — 104 
Net Income 189 129 — 318 
Less: Net Income Attributable to Noncontrolling Interests11 — — 11 
Net Income Attributable to DT Midstream$178 $129 $— $307 
Capital expenditures$20 $120 $— $140 
December 31, 2021
Investments in equity method investees$1,691 $— $— $1,691 
Goodwill53 420 — 473 
Total Assets$4,165 $4,001 $— $8,166