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Business Segments (Tables)
 12 Months Ended
Dec. 31, 2023
Business Segments [Abstract]  
Measurement of Total Segment Gross Operating Margin
The following table presents our measurement of total segment gross operating margin for the years indicated.  The GAAP financial measure most directly comparable to total segment gross operating margin is operating income.

  
For the Year Ended December 31,
  
   
2023
    
2022
    
2021
  
Operating income
  
$
6,929
    
$
6,907
    
$
6,103
  
Adjustments to reconcile operating income to total segment gross operating margin
(addition or subtraction indicated by sign):
                        
   Depreciation, amortization and accretion expense in operating costs and expenses (1)
    
2,215
      
2,107
      
2,011
  
   Asset impairment charges in operating costs and expenses
    
30
      
53
      
233
  
   Net losses (gains) attributable to asset sales and related matters in operating costs and
 expenses
    
(10
)
    
1
      
5
  
   General and administrative costs
    
231
      
241
      
209
  
   Non-refundable payments received from shippers attributable to make-up rights (2)
    
52
      
144
      
85
  
   Subsequent recognition of revenues attributable to make-up rights (3)
    
(71
)
    
(97
)
    
(138
)
Total segment gross operating margin
  
$
9,376
    
$
9,356
    
$
8,508
  

(1)
Excludes amortization of major maintenance costs for reaction-based plants, which are a component of gross operating margin.
(2)
Since make-up rights entail a future performance obligation by the pipeline to the shipper, these receipts are recorded as deferred revenue for GAAP purposes; however, these receipts are included in gross operating margin in the period of receipt since they are nonrefundable to the shipper.
(3)
As deferred revenues attributable to make-up rights are subsequently recognized as revenue under GAAP, gross operating margin must be adjusted to remove such amounts to prevent duplication since the associated non-refundable payments were previously included in gross operating margin.
Information by Business Segments
Gross operating margin by segment is calculated by subtracting segment operating costs and expenses from segment revenues, with both segment totals reflecting the adjustments noted in the preceding table, as applicable, and before the elimination of intercompany transactions.  The following table presents gross operating margin by segment for the years indicated:

 
  
For the Year Ended December 31,
 
 
  
2023
    
2022
    
2021
  
Gross operating margin by segment:
                  
NGL Pipelines & Services
  
$
4,898
    
$
5,142
    
$
4,316
  
Crude Oil Pipelines & Services
    
1,707
      
1,655
      
1,680
  
Natural Gas Pipelines & Services
    
1,077
      
1,042
      
1,155
  
Petrochemical & Refined Products Services
    
1,694
      
1,517
      
1,357
  
Total segment gross operating margin
  
$
9,376
    
$
9,356
    
$
8,508
  
Information by business segment, together with reconciliations to amounts presented on, or included in, our Statements of Consolidated Operations, is presented in the following table:

 
  
Reportable Business Segments
              
 
  
NGL
Pipelines
& Services
    
Crude Oil
Pipelines
& Services
    
Natural Gas
Pipelines
& Services
    
Petrochemical
& Refined
Products
Services
    
Adjustments
and
Eliminations
    
Consolidated
Total
  
Revenues from third parties:
                                    
Year ended December 31, 2023
  
$
17,635
    
$
19,300
    
$
3,761
    
$
8,958
    
$
–
    
$
49,654
  
Year ended December 31, 2022
    
24,244
      
18,548
      
6,229
      
9,106
      
–
      
58,127
  
Year ended December 31, 2021
    
16,293
      
10,849
      
4,382
      
9,203
      
–
      
40,727
  
Revenues from related parties:
                                                
Year ended December 31, 2023
    
10
      
36
      
15
      
–
      
–
      
61
  
Year ended December 31, 2022
    
15
      
13
      
31
      
–
      
–
      
59
  
Year ended December 31, 2021
    
9
      
53
      
18
      
–
      
–
      
80
  
Intersegment and intrasegment revenues:
                                                
Year ended December 31, 2023
    
45,490
      
57,122
      
527
      
18,882
      
(122,021
)
    
–
  
Year ended December 31, 2022
    
65,760
      
46,625
      
888
      
18,304
      
(131,577
)
    
–
  
Year ended December 31, 2021
    
55,796
      
29,985
      
650
      
22,110
      
(108,541
)
    
–
  
Total revenues:
                                                
Year ended December 31, 2023
    
63,135
      
76,458
      
4,303
      
27,840
      
(122,021
)
    
49,715
  
Year ended December 31, 2022
    
90,019
      
65,186
      
7,148
      
27,410
      
(131,577
)
    
58,186
  
Year ended December 31, 2021
    
72,098
      
40,887
      
5,050
      
31,313
      
(108,541
)
    
40,807
  
Equity in income of unconsolidated affiliates:
                                                
Year ended December 31, 2023
    
133
      
320
      
6
      
3
      
–
      
462
  
Year ended December 31, 2022
    
149
      
308
      
5
      
2
      
–
      
464
  
Year ended December 31, 2021
    
120
      
456
      
6
      
1
      
–
      
583
  

Information by business segment, together with reconciliations to our Consolidated Balance Sheet totals, is presented in the following table:

 
  
Reportable Business Segments
              
 
  
NGL
Pipelines
& Services
    
Crude Oil
Pipelines
& Services
    
Natural Gas
Pipelines
& Services
    
Petrochemical
& Refined
Products
Services
    
Adjustments
and
Eliminations
    
Consolidated
Total
  
Property, plant and equipment, net: (see Note 4)
                                    
At December 31, 2023
  
$
17,541
    
$
6,627
    
$
10,019
    
$
9,372
    
$
2,245
    
$
45,804
  
At December 31, 2022
    
17,283
      
6,760
      
9,721
      
7,770
      
2,867
      
44,401
  
At December 31, 2021
    
17,202
      
6,974
      
8,560
      
7,736
      
1,616
      
42,088
  
Investments in unconsolidated affiliates: (see Note 5)
                                                
At December 31, 2023
    
612
      
1,681
      
33
      
4
      
–
      
2,330
  
At December 31, 2022
    
640
      
1,677
      
32
      
3
      
–
      
2,352
  
At December 31, 2021
    
656
      
1,738
      
31
      
3
      
–
      
2,428
  
Intangible assets, net: (see Note 6)
                                                
At December 31, 2023
    
828
      
1,673
      
1,158
      
111
      
–
      
3,770
  
At December 31, 2022
    
865
      
1,776
      
1,206
      
118
      
–
      
3,965
  
At December 31, 2021
    
317
      
1,860
      
849
      
125
      
–
      
3,151
  
Goodwill: (see Note 6)
                                                
At December 31, 2023
    
2,811
      
1,841
      
–
      
956
      
–
      
5,608
  
At December 31, 2022
    
2,811
      
1,841
      
–
      
956
      
–
      
5,608
  
At December 31, 2021
    
2,652
      
1,841
      
–
      
956
      
–
      
5,449
  
Segment assets:
                                                
At December 31, 2023
    
21,792
      
11,822
      
11,210
      
10,443
      
2,245
      
57,512
  
At December 31, 2022
    
21,599
      
12,054
      
10,959
      
8,847
      
2,867
      
56,326
  
At December 31, 2021
    
20,827
      
12,413
      
9,440
      
8,820
      
1,616
      
53,116
  
Consolidated Revenues and Expenses
The following table presents additional information regarding our consolidated revenues and costs and expenses for the years indicated:

 
  
For the Year Ended December 31,
  
 
  
2023
    
2022
    
2021
  
Consolidated revenues:
                  
NGL Pipelines & Services
  
$
17,645
    
$
24,259
    
$
16,302
  
Crude Oil Pipelines & Services
    
19,336
      
18,561
      
10,902
  
Natural Gas Pipelines & Services
    
3,776
      
6,260
      
4,400
  
Petrochemical & Refined Products Services
    
8,958
      
9,106
      
9,203
  
Total consolidated revenues
  
$
49,715
    
$
58,186
    
$
40,807
  
 
                        
Consolidated costs and expenses:
                        
Operating costs and expenses:
                        
Cost of sales
  
$
37,023
    
$
45,836
    
$
29,887
  
Other operating costs and expenses (1)
    
3,695
      
3,454
      
2,915
  
Depreciation, amortization and accretion
    
2,279
      
2,158
      
2,038
  
Impairment of assets other than goodwill
    
30
      
53
      
233
  
Net losses (gains) attributable to asset sales and related matters
    
(10
)
    
1
      
5
  
General and administrative costs
    
231
      
241
      
209
  
Total consolidated costs and expenses
  
$
43,248
    
$
51,743
    
$
35,287
  

(1)
Represents the cost of operating our plants, pipelines and other fixed assets excluding: depreciation, amortization and accretion charges; asset impairment charges; and net losses (gains) attributable to asset sales and related matters.