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Revenue Recognition - Schedule of Disaggregation of Revenue (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Disaggregation of Revenue [Line Items]      
Revenues from contracts with customers $ 13,647 $ 18,128 $ 16,154
Leasing services(d) 1,368 1,302 1,266
Derivatives adjustments on commodity sales 178 (354) (923)
Other 141 124 113
Total other revenues 1,687 1,072 456
Total revenues 15,334 19,200 16,610
Firm services      
Disaggregation of Revenue [Line Items]      
Revenues from contracts with customers 4,537 4,515 4,411
Fee-based services      
Disaggregation of Revenue [Line Items]      
Revenues from contracts with customers 2,502 2,360 2,114
Total services      
Disaggregation of Revenue [Line Items]      
Revenues from contracts with customers 7,039 6,875 6,525
Natural gas sales      
Disaggregation of Revenue [Line Items]      
Revenues from contracts with customers 2,724 6,340 6,480
Product sales      
Disaggregation of Revenue [Line Items]      
Revenues from contracts with customers 3,884 4,913 3,149
Total commodity sales      
Disaggregation of Revenue [Line Items]      
Revenues from contracts with customers 6,608 11,253 9,629
Total revenues 6,786 10,897 8,714
Natural Gas Pipelines      
Disaggregation of Revenue [Line Items]      
Total revenues 9,152 12,659 11,644
Products Pipelines      
Disaggregation of Revenue [Line Items]      
Total revenues 3,066 3,418 2,245
Terminals      
Disaggregation of Revenue [Line Items]      
Total revenues 1,911 1,789 1,712
CO2      
Disaggregation of Revenue [Line Items]      
Total revenues 1,205 1,334 1,009
Operating Segments | Natural Gas Pipelines      
Disaggregation of Revenue [Line Items]      
Revenues from contracts with customers 8,312 12,172 11,871
Leasing services(d) 475 474 473
Derivatives adjustments on commodity sales 285 (26) (700)
Other 96 66 65
Total other revenues 856 514 (162)
Total revenues 9,168 12,686 11,709
Operating Segments | Natural Gas Pipelines | Firm services      
Disaggregation of Revenue [Line Items]      
Revenues from contracts with customers 3,543 3,547 3,402
Operating Segments | Natural Gas Pipelines | Fee-based services      
Disaggregation of Revenue [Line Items]      
Revenues from contracts with customers 1,008 926 746
Operating Segments | Natural Gas Pipelines | Total services      
Disaggregation of Revenue [Line Items]      
Revenues from contracts with customers 4,551 4,473 4,148
Operating Segments | Natural Gas Pipelines | Natural gas sales      
Disaggregation of Revenue [Line Items]      
Revenues from contracts with customers 2,651 6,266 6,463
Operating Segments | Natural Gas Pipelines | Product sales      
Disaggregation of Revenue [Line Items]      
Revenues from contracts with customers 1,110 1,433 1,260
Operating Segments | Natural Gas Pipelines | Total commodity sales      
Disaggregation of Revenue [Line Items]      
Revenues from contracts with customers 3,761 7,699 7,723
Operating Segments | Products Pipelines      
Disaggregation of Revenue [Line Items]      
Revenues from contracts with customers 2,842 3,201 2,053
Leasing services(d) 200 194 172
Derivatives adjustments on commodity sales 0 (3) (1)
Other 24 26 21
Total other revenues 224 217 192
Total revenues 3,066 3,418 2,245
Operating Segments | Products Pipelines | Firm services      
Disaggregation of Revenue [Line Items]      
Revenues from contracts with customers 171 207 259
Operating Segments | Products Pipelines | Fee-based services      
Disaggregation of Revenue [Line Items]      
Revenues from contracts with customers 1,036 962 949
Operating Segments | Products Pipelines | Total services      
Disaggregation of Revenue [Line Items]      
Revenues from contracts with customers 1,207 1,169 1,208
Operating Segments | Products Pipelines | Natural gas sales      
Disaggregation of Revenue [Line Items]      
Revenues from contracts with customers 0 0 0
Operating Segments | Products Pipelines | Product sales      
Disaggregation of Revenue [Line Items]      
Revenues from contracts with customers 1,635 2,032 845
Operating Segments | Products Pipelines | Total commodity sales      
Disaggregation of Revenue [Line Items]      
Revenues from contracts with customers 1,635 2,032 845
Operating Segments | Terminals      
Disaggregation of Revenue [Line Items]      
Revenues from contracts with customers 1,279 1,218 1,150
Leasing services(d) 638 574 565
Derivatives adjustments on commodity sales 0 0 0
Other 0 0 0
Total other revenues 638 574 565
Total revenues 1,917 1,792 1,715
Operating Segments | Terminals | Firm services      
Disaggregation of Revenue [Line Items]      
Revenues from contracts with customers 819 763 751
Operating Segments | Terminals | Fee-based services      
Disaggregation of Revenue [Line Items]      
Revenues from contracts with customers 427 426 375
Operating Segments | Terminals | Total services      
Disaggregation of Revenue [Line Items]      
Revenues from contracts with customers 1,246 1,189 1,126
Operating Segments | Terminals | Natural gas sales      
Disaggregation of Revenue [Line Items]      
Revenues from contracts with customers 0 0 0
Operating Segments | Terminals | Product sales      
Disaggregation of Revenue [Line Items]      
Revenues from contracts with customers 33 29 24
Operating Segments | Terminals | Total commodity sales      
Disaggregation of Revenue [Line Items]      
Revenues from contracts with customers 33 29 24
Operating Segments | CO2      
Disaggregation of Revenue [Line Items]      
Revenues from contracts with customers 1,240 1,567 1,148
Leasing services(d) 55 60 56
Derivatives adjustments on commodity sales (107) (325) (222)
Other 21 32 27
Total other revenues (31) (233) (139)
Total revenues 1,209 1,334 1,009
Operating Segments | CO2 | Firm services      
Disaggregation of Revenue [Line Items]      
Revenues from contracts with customers 1 1 1
Operating Segments | CO2 | Fee-based services      
Disaggregation of Revenue [Line Items]      
Revenues from contracts with customers 40 46 45
Operating Segments | CO2 | Total services      
Disaggregation of Revenue [Line Items]      
Revenues from contracts with customers 41 47 46
Operating Segments | CO2 | Natural gas sales      
Disaggregation of Revenue [Line Items]      
Revenues from contracts with customers 85 94 32
Operating Segments | CO2 | Product sales      
Disaggregation of Revenue [Line Items]      
Revenues from contracts with customers 1,114 1,426 1,070
Operating Segments | CO2 | Total commodity sales      
Disaggregation of Revenue [Line Items]      
Revenues from contracts with customers 1,199 1,520 1,102
Corporate and Eliminations      
Disaggregation of Revenue [Line Items]      
Revenues from contracts with customers (26) (30) (68)
Leasing services(d) 0 0 0
Derivatives adjustments on commodity sales 0 0 0
Other 0 0 0
Total other revenues 0 0 0
Total revenues (26) (30) (68)
Corporate and Eliminations | Firm services      
Disaggregation of Revenue [Line Items]      
Revenues from contracts with customers 3 (3) (2)
Corporate and Eliminations | Fee-based services      
Disaggregation of Revenue [Line Items]      
Revenues from contracts with customers (9) 0 (1)
Corporate and Eliminations | Total services      
Disaggregation of Revenue [Line Items]      
Revenues from contracts with customers (6) (3) (3)
Corporate and Eliminations | Natural gas sales      
Disaggregation of Revenue [Line Items]      
Revenues from contracts with customers (12) (20) (15)
Corporate and Eliminations | Product sales      
Disaggregation of Revenue [Line Items]      
Revenues from contracts with customers (8) (7) (50)
Corporate and Eliminations | Total commodity sales      
Disaggregation of Revenue [Line Items]      
Revenues from contracts with customers $ (20) $ (27) $ (65)