v3.26.1
SEGMENT AND RELATED INFORMATION (Details)
$ in Millions
 3 Months Ended
Mar. 31, 2026
USD ($)
segment
Mar. 31, 2025
USD ($)
Dec. 31, 2025
USD ($)
Segment Reporting Information [Line Items]      
Number of operating segments | segment 2    
Number of reportable segments | segment 2    
Revenues      
Operating revenues $ 336 $ 303  
Operating Expenses      
Operation and maintenance 85 78  
Depreciation and amortization 69 63  
Taxes other than income 15 14  
Asset (gains) losses and impairments, net 1 0  
Other (Income) and Deductions      
Interest expense 40 40  
Interest income (1) (1)  
Earnings from equity method investees (43) (37)  
Income Tax Expense 36 35  
Less: Net Income Attributable to Noncontrolling Interests 4 3  
Net Income Attributable to DT Midstream 130 108  
Capital expenditures 78 71  
Investments in equity method investees 1,245 1,253 $ 1,253
Consolidated assets 10,155 [1] 10,080 $ 10,080 [1]
Operating segments      
Revenues      
Operating revenues 341 303  
Operating Expenses      
Operation and maintenance 90 78  
Depreciation and amortization 69 63  
Taxes other than income 15 14  
Asset (gains) losses and impairments, net 1    
Other (Income) and Deductions      
Interest expense 40 40  
Interest income (1) (1)  
Earnings from equity method investees (43) (37)  
Income Tax Expense 36 35  
Less: Net Income Attributable to Noncontrolling Interests 4 3  
Net Income Attributable to DT Midstream 130 108  
Capital expenditures 78 71  
Investments in equity method investees 1,245 1,253  
Consolidated assets 10,155 10,080  
Operating segments | Pipeline      
Revenues      
Operating revenues 185 169  
Operating Expenses      
Operation and maintenance 35 32  
Depreciation and amortization 29 28  
Taxes other than income 9 9  
Asset (gains) losses and impairments, net 0    
Other (Income) and Deductions      
Interest expense 14 13  
Interest income (1) (1)  
Earnings from equity method investees (43) (37)  
Income Tax Expense 30 30  
Less: Net Income Attributable to Noncontrolling Interests 4 3  
Net Income Attributable to DT Midstream 108 92  
Capital expenditures 34 24  
Investments in equity method investees 1,245 1,253  
Consolidated assets 5,351 5,297  
Operating segments | Gathering      
Revenues      
Operating revenues 156 134  
Operating Expenses      
Operation and maintenance 55 46  
Depreciation and amortization 40 35  
Taxes other than income 6 5  
Asset (gains) losses and impairments, net 1    
Other (Income) and Deductions      
Interest expense 26 27  
Interest income 0 0  
Earnings from equity method investees 0 0  
Income Tax Expense 6 5  
Less: Net Income Attributable to Noncontrolling Interests 0 0  
Net Income Attributable to DT Midstream 22 16  
Capital expenditures 44 47  
Investments in equity method investees 0 0  
Consolidated assets 4,804 4,783  
Eliminations      
Revenues      
Operating revenues (5) 0  
Operating Expenses      
Operation and maintenance (5) 0  
Depreciation and amortization 0 0  
Taxes other than income 0 0  
Asset (gains) losses and impairments, net    
Other (Income) and Deductions      
Interest expense 0 0  
Interest income 0 0  
Earnings from equity method investees 0 0  
Income Tax Expense 0 0  
Less: Net Income Attributable to Noncontrolling Interests 0 0  
Net Income Attributable to DT Midstream 0 0  
Capital expenditures 0 0  
Investments in equity method investees 0 0  
Consolidated assets $ 0 $ 0  
[1]
(a) Our consolidated assets include $939 million and $943 million at March 31, 2026 and December 31, 2025, respectively, of certain assets that can be used only to settle obligations of the VIE. See Note 1, "Description of the Business and Basis of Presentation," to the Consolidated Financial Statements.