v3.26.1
Revenue Recognition - Disaggregation of Revenue (Details)
$ in Millions
 3 Months Ended
Mar. 31, 2026
USD ($)
Mar. 31, 2025
USD ($)
Disaggregation of Revenue [Line Items]    
Revenues from customers $ 4,451 $ 3,862
Leasing services 364 358
Derivatives adjustments on commodity sales (27) (13)
Other 40 34
Total other revenues 377 379
Total revenues $ 4,828 4,241
Number of Reportable Segments 4  
Natural Gas Pipelines    
Disaggregation of Revenue [Line Items]    
Total revenues $ 3,291 2,750
Products Pipelines    
Disaggregation of Revenue [Line Items]    
Total revenues 687 663
Terminals    
Disaggregation of Revenue [Line Items]    
Total revenues 562 516
CO2    
Disaggregation of Revenue [Line Items]    
Total revenues 288 312
Operating Segments | Natural Gas Pipelines    
Disaggregation of Revenue [Line Items]    
Revenues from customers 3,145 2,623
Leasing services 110 112
Derivatives adjustments on commodity sales 12 (3)
Other 29 22
Total other revenues 151 131
Total revenues 3,296 2,754
Operating Segments | Products Pipelines    
Disaggregation of Revenue [Line Items]    
Revenues from customers 637 611
Leasing services 44 45
Derivatives adjustments on commodity sales (1) 0
Other 7 7
Total other revenues 50 52
Total revenues 687 663
Operating Segments | Terminals    
Disaggregation of Revenue [Line Items]    
Revenues from customers 372 334
Leasing services 193 184
Derivatives adjustments on commodity sales 0 0
Other 0 0
Total other revenues 193 184
Total revenues 565 518
Operating Segments | CO2    
Disaggregation of Revenue [Line Items]    
Revenues from customers 305 300
Leasing services 17 17
Derivatives adjustments on commodity sales (38) (10)
Other 4 5
Total other revenues (17) 12
Total revenues 288 312
Corporate and Eliminations    
Disaggregation of Revenue [Line Items]    
Revenues from customers (8) (6)
Leasing services 0 0
Derivatives adjustments on commodity sales 0 0
Other 0 0
Total other revenues 0 0
Total revenues (8) (6)
Corporate and Eliminations | Natural Gas Pipelines    
Disaggregation of Revenue [Line Items]    
Total revenues (5) (4)
Corporate and Eliminations | Products Pipelines    
Disaggregation of Revenue [Line Items]    
Total revenues 0 0
Corporate and Eliminations | Terminals    
Disaggregation of Revenue [Line Items]    
Total revenues (3) (2)
Corporate and Eliminations | CO2    
Disaggregation of Revenue [Line Items]    
Total revenues 0 0
Firm services    
Disaggregation of Revenue [Line Items]    
Revenues from customers 1,460 1,342
Firm services | Operating Segments | Natural Gas Pipelines    
Disaggregation of Revenue [Line Items]    
Revenues from customers 1,147 1,073
Firm services | Operating Segments | Products Pipelines    
Disaggregation of Revenue [Line Items]    
Revenues from customers 61 53
Firm services | Operating Segments | Terminals    
Disaggregation of Revenue [Line Items]    
Revenues from customers 253 217
Firm services | Operating Segments | CO2    
Disaggregation of Revenue [Line Items]    
Revenues from customers 0 0
Firm services | Corporate and Eliminations    
Disaggregation of Revenue [Line Items]    
Revenues from customers (1) (1)
Fee-based services    
Disaggregation of Revenue [Line Items]    
Revenues from customers 707 668
Fee-based services | Operating Segments | Natural Gas Pipelines    
Disaggregation of Revenue [Line Items]    
Revenues from customers 330 301
Fee-based services | Operating Segments | Products Pipelines    
Disaggregation of Revenue [Line Items]    
Revenues from customers 264 257
Fee-based services | Operating Segments | Terminals    
Disaggregation of Revenue [Line Items]    
Revenues from customers 101 101
Fee-based services | Operating Segments | CO2    
Disaggregation of Revenue [Line Items]    
Revenues from customers 14 10
Fee-based services | Corporate and Eliminations    
Disaggregation of Revenue [Line Items]    
Revenues from customers (2) (1)
Total services    
Disaggregation of Revenue [Line Items]    
Revenues from customers 2,167 2,010
Total services | Operating Segments | Natural Gas Pipelines    
Disaggregation of Revenue [Line Items]    
Revenues from customers 1,477 1,374
Total services | Operating Segments | Products Pipelines    
Disaggregation of Revenue [Line Items]    
Revenues from customers 325 310
Total services | Operating Segments | Terminals    
Disaggregation of Revenue [Line Items]    
Revenues from customers 354 318
Total services | Operating Segments | CO2    
Disaggregation of Revenue [Line Items]    
Revenues from customers 14 10
Total services | Corporate and Eliminations    
Disaggregation of Revenue [Line Items]    
Revenues from customers (3) (2)
Natural gas sales    
Disaggregation of Revenue [Line Items]    
Revenues from customers 1,454 994
Natural gas sales | Operating Segments | Natural Gas Pipelines    
Disaggregation of Revenue [Line Items]    
Revenues from customers 1,437 980
Natural gas sales | Operating Segments | Products Pipelines    
Disaggregation of Revenue [Line Items]    
Revenues from customers 0 0
Natural gas sales | Operating Segments | Terminals    
Disaggregation of Revenue [Line Items]    
Revenues from customers 0 0
Natural gas sales | Operating Segments | CO2    
Disaggregation of Revenue [Line Items]    
Revenues from customers 19 16
Natural gas sales | Corporate and Eliminations    
Disaggregation of Revenue [Line Items]    
Revenues from customers (2) (2)
Product sales    
Disaggregation of Revenue [Line Items]    
Revenues from customers 786 820
Product sales | Operating Segments | Natural Gas Pipelines    
Disaggregation of Revenue [Line Items]    
Revenues from customers 215 262
Product sales | Operating Segments | Products Pipelines    
Disaggregation of Revenue [Line Items]    
Revenues from customers 312 301
Product sales | Operating Segments | Terminals    
Disaggregation of Revenue [Line Items]    
Revenues from customers 18 16
Product sales | Operating Segments | CO2    
Disaggregation of Revenue [Line Items]    
Revenues from customers 243 243
Product sales | Corporate and Eliminations    
Disaggregation of Revenue [Line Items]    
Revenues from customers (2) (2)
Other sales    
Disaggregation of Revenue [Line Items]    
Revenues from customers 44 38
Other sales | Operating Segments | Natural Gas Pipelines    
Disaggregation of Revenue [Line Items]    
Revenues from customers 16 7
Other sales | Operating Segments | Products Pipelines    
Disaggregation of Revenue [Line Items]    
Revenues from customers 0 0
Other sales | Operating Segments | Terminals    
Disaggregation of Revenue [Line Items]    
Revenues from customers 0 0
Other sales | Operating Segments | CO2    
Disaggregation of Revenue [Line Items]    
Revenues from customers 29 31
Other sales | Corporate and Eliminations    
Disaggregation of Revenue [Line Items]    
Revenues from customers (1) 0
Total commodity sales    
Disaggregation of Revenue [Line Items]    
Revenues from customers 2,284 1,852
Total revenues 2,245 1,836
Total commodity sales | Operating Segments | Natural Gas Pipelines    
Disaggregation of Revenue [Line Items]    
Revenues from customers 1,668 1,249
Total commodity sales | Operating Segments | Products Pipelines    
Disaggregation of Revenue [Line Items]    
Revenues from customers 312 301
Total commodity sales | Operating Segments | Terminals    
Disaggregation of Revenue [Line Items]    
Revenues from customers 18 16
Total commodity sales | Operating Segments | CO2    
Disaggregation of Revenue [Line Items]    
Revenues from customers 291 290
Total commodity sales | Corporate and Eliminations    
Disaggregation of Revenue [Line Items]    
Revenues from customers $ (5) $ (4)