v3.26.3
Business Segments and Related Information - Schedule of Segment Financial Information (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Segment revenues:        
Revenues $ 17,948 $ 12,023 $ 50,603 $ 38,803
Significant segment expenses:        
Cost of sales 13,993 8,590 38,831 28,494
Other segment income (expense):        
Equity in income (loss) of unconsolidated affiliates 87 90 272 276
NGL Pipelines & Services        
Segment revenues:        
Revenues 5,945 3,465 15,211 12,271
Other segment income (expense):        
Equity in income (loss) of unconsolidated affiliates 24 21 64 59
Crude Oil Pipelines & Services        
Segment revenues:        
Revenues 6,631 5,396 21,269 15,300
Other segment income (expense):        
Equity in income (loss) of unconsolidated affiliates 61 68 201 212
Natural Gas Pipelines & Services        
Segment revenues:        
Revenues 1,188 932 2,954 3,224
Other segment income (expense):        
Equity in income (loss) of unconsolidated affiliates 2 2 5 4
Petrochemical & Refined Products Services        
Segment revenues:        
Revenues 4,184 2,230 11,169 8,008
Other segment income (expense):        
Equity in income (loss) of unconsolidated affiliates 0 (1) 2 1
Nonrelated Party        
Segment revenues:        
Revenues 17,934 12,009 50,559 38,765
Related parties        
Segment revenues:        
Revenues 14 14 44 38
Operating Segments        
Segment revenues:        
Revenues 63,361 45,364 174,848 139,537
Significant segment expenses:        
Cost of sales 59,108 41,643 162,179 128,388
Variable operating costs and expenses 434 394 1,244 1,121
Fixed operating costs and expenses 1,181 1,048 3,401 3,051
Total significant segment expenses 60,723 43,085 166,824 132,560
Other segment income (expense):        
Equity in income (loss) of unconsolidated affiliates 87 90 272 276
Other segment items 18 14 93 65
Total other segment income 105 104 365 341
Total segment gross operating margin 2,743 2,383 8,389 7,318
Other financial information:        
Capital expenditures 1,058 1,958 3,199 4,319
Operating Segments | NGL Pipelines & Services        
Segment revenues:        
Revenues 25,589 21,048 70,090 63,875
Significant segment expenses:        
Cost of sales 23,338 19,093 63,472 58,013
Variable operating costs and expenses 233 219 651 622
Fixed operating costs and expenses 512 456 1,493 1,321
Total significant segment expenses 24,083 19,768 65,616 59,956
Other segment income (expense):        
Equity in income (loss) of unconsolidated affiliates 24 21 64 59
Other segment items 5 2 45 40
Total other segment income 29 23 109 99
Total segment gross operating margin 1,535 1,303 4,583 4,018
Other financial information:        
Capital expenditures 484 1,097 1,515 2,557
Operating Segments | Crude Oil Pipelines & Services        
Segment revenues:        
Revenues 20,737 16,900 64,023 46,750
Significant segment expenses:        
Cost of sales 20,258 16,450 62,581 45,417
Variable operating costs and expenses 42 36 121 105
Fixed operating costs and expenses 136 116 372 305
Total significant segment expenses 20,436 16,602 63,074 45,827
Other segment income (expense):        
Equity in income (loss) of unconsolidated affiliates 61 68 201 212
Other segment items 5 5 31 13
Total other segment income 66 73 232 225
Total segment gross operating margin 367 371 1,181 1,148
Other financial information:        
Capital expenditures 22 35 71 83
Operating Segments | Natural Gas Pipelines & Services        
Segment revenues:        
Revenues 1,394 1,167 3,745 3,893
Significant segment expenses:        
Cost of sales 745 616 1,606 2,159
Variable operating costs and expenses 18 21 59 63
Fixed operating costs and expenses 224 194 626 566
Total significant segment expenses 987 831 2,291 2,788
Other segment income (expense):        
Equity in income (loss) of unconsolidated affiliates 2 2 5 4
Other segment items 2 1 4 4
Total other segment income 4 3 9 8
Total segment gross operating margin 411 339 1,463 1,113
Other financial information:        
Capital expenditures 483 674 1,302 1,304
Operating Segments | Petrochemical & Refined Products Services        
Segment revenues:        
Revenues 15,641 6,249 36,990 25,019
Significant segment expenses:        
Cost of sales 14,767 5,484 34,520 22,799
Variable operating costs and expenses 141 118 413 331
Fixed operating costs and expenses 309 282 910 859
Total significant segment expenses 15,217 5,884 35,843 23,989
Other segment income (expense):        
Equity in income (loss) of unconsolidated affiliates 0 (1) 2 1
Other segment items 6 6 13 8
Total other segment income 6 5 15 9
Total segment gross operating margin 430 370 1,162 1,039
Other financial information:        
Capital expenditures 69 152 311 375
Operating Segments | Nonrelated Party        
Segment revenues:        
Revenues 17,934 12,009 50,559 38,765
Operating Segments | Nonrelated Party | NGL Pipelines & Services        
Segment revenues:        
Revenues 5,942 3,463 15,202 12,265
Operating Segments | Nonrelated Party | Crude Oil Pipelines & Services        
Segment revenues:        
Revenues 6,624 5,389 21,250 15,281
Operating Segments | Nonrelated Party | Natural Gas Pipelines & Services        
Segment revenues:        
Revenues 1,184 927 2,938 3,211
Operating Segments | Nonrelated Party | Petrochemical & Refined Products Services        
Segment revenues:        
Revenues 4,184 2,230 11,169 8,008
Operating Segments | Related parties        
Segment revenues:        
Revenues 14 14 44 38
Operating Segments | Related parties | NGL Pipelines & Services        
Segment revenues:        
Revenues 3 2 9 6
Operating Segments | Related parties | Crude Oil Pipelines & Services        
Segment revenues:        
Revenues 7 7 19 19
Operating Segments | Related parties | Natural Gas Pipelines & Services        
Segment revenues:        
Revenues 4 5 16 13
Operating Segments | Related parties | Petrochemical & Refined Products Services        
Segment revenues:        
Revenues 0 0 0 0
Intersegment Eliminations        
Segment revenues:        
Revenues (45,413) (33,341) (124,245) (100,734)
Intersegment Eliminations | NGL Pipelines & Services        
Segment revenues:        
Revenues (19,644) (17,583) (54,879) (51,604)
Intersegment Eliminations | Crude Oil Pipelines & Services        
Segment revenues:        
Revenues (14,106) (11,504) (42,754) (31,450)
Intersegment Eliminations | Natural Gas Pipelines & Services        
Segment revenues:        
Revenues (206) (235) (791) (669)
Intersegment Eliminations | Petrochemical & Refined Products Services        
Segment revenues:        
Revenues $ (11,457) $ (4,019) $ (25,821) $ (17,011)