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Business Segments and Related Information (Tables)
 9 Months Ended
Sep. 30, 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 periods presented.  The GAAP financial measure most directly comparable to total segment gross operating margin is operating income.

 
  
For the Three Months
Ended September 30,
    
For the Nine Months
Ended September 30,
  
 
  
2023
    
2022
    
2023
    
2022
  
Operating income
  
$
1,695
    
$
1,712
    
$
5,008
    
$
5,142
  
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)
    
566
      
524
      
1,644
      
1,569
  
Asset impairment charges in operating costs and expenses
    
11
      
29
      
27
      
48
  
Net losses (gains) attributable to asset sales and related matters in operating costs
   and expenses
    
–
      
1
      
(4
)
    
3
  
General and administrative costs
    
59
      
55
      
172
      
179
  
Non-refundable payments received from shippers attributable to make-up rights (2)
    
12
      
39
      
36
      
112
  
Subsequent recognition of revenues attributable to make-up rights (3)
    
(23
)
    
(18
)
    
(68
)
    
(63
)
Total segment gross operating margin
  
$
2,320
    
$
2,342
    
$
6,815
    
$
6,990
  

(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 The following table presents gross operating margin by segment for the periods indicated:

   
For the Three Months
Ended September 30,
    
For the Nine Months
Ended September 30,
  
 
  
2023
    
2022
    
2023
    
2022
  
Gross operating margin by segment:
                        
NGL Pipelines & Services
  
$
1,196
    
$
1,296
    
$
3,518
    
$
3,848
  
Crude Oil Pipelines & Services
    
432
      
415
      
1,251
      
1,237
  
Natural Gas Pipelines & Services
    
239
      
278
      
791
      
727
  
Petrochemical & Refined Products Services
    
453
      
353
      
1,255
      
1,178
  
Total segment gross operating margin
  
$
2,320
    
$
2,342
    
$
6,815
    
$
6,990
  

Information by business segment, together with reconciliations to amounts presented on, or included in, our Unaudited Condensed 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:
                                    
Three months ended September 30, 2023
  
$
3,754
    
$
5,354
    
$
880
    
$
1,992
    
$
–
    
$
11,980
  
Three months ended September 30, 2022
    
6,232
      
4,720
      
1,875
      
2,621
      
–
      
15,448
  
Nine months ended September 30, 2023
    
12,367
      
13,825
      
2,863
      
5,994
      
–
      
35,049
  
Nine months ended September 30, 2022
    
18,358
      
14,163
      
4,672
      
7,288
      
–
      
44,481
  
Revenues from related parties:
                                                
Three months ended September 30, 2023
    
3
      
11
      
4
      
–
      
–
      
18
  
Three months ended September 30, 2022
    
5
      
4
      
11
      
–
      
–
      
20
  
Nine months ended September 30, 2023
    
8
      
25
      
11
      
–
      
–
      
44
  
Nine months ended September 30, 2022
    
13
      
18
      
24
      
–
      
–
      
55
  
Intersegment and intrasegment revenues:
                                                
Three months ended September 30, 2023
    
12,367
      
16,343
      
133
      
4,307
      
(33,150
)
    
–
  
Three months ended September 30, 2022
    
14,666
      
13,456
      
262
      
5,934
      
(34,318
)
    
–
  
Nine months ended September 30, 2023
    
34,347
      
41,139
      
386
      
13,108
      
(88,980
)
    
–
  
Nine months ended September 30, 2022
    
52,079
      
35,327
      
683
      
14,446
      
(102,535
)
    
–
  
Total revenues:
                                                
Three months ended September 30, 2023
    
16,124
      
21,708
      
1,017
      
6,299
      
(33,150
)
    
11,998
  
Three months ended September 30, 2022
    
20,903
      
18,180
      
2,148
      
8,555
      
(34,318
)
    
15,468
  
Nine months ended September 30, 2023
    
46,722
      
54,989
      
3,260
      
19,102
      
(88,980
)
    
35,093
  
Nine months ended September 30, 2022
    
70,450
      
49,508
      
5,379
      
21,734
      
(102,535
)
    
44,536
  
Equity in income of unconsolidated affiliates:
                                                
Three months ended September 30, 2023
    
32
      
89
      
1
      
–
      
–
      
122
  
Three months ended September 30, 2022
    
39
      
70
      
2
      
–
      
–
      
111
  
Nine months ended September 30, 2023
    
101
      
241
      
4
      
1
      
–
      
347
  
Nine months ended September 30, 2022
    
109
      
221
      
4
      
1
      
–
      
335
  
Information by business segment, together with reconciliations to our Unaudited Condensed 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 September 30, 2023
  
$
17,468
    
$
6,671
    
$
9,821
    
$
9,374
    
$
2,006
    
$
45,340
  
At December 31, 2022
    
17,283
      
6,760
      
9,721
      
7,770
      
2,867
      
44,401
  
Investments in unconsolidated affiliates:
(see Note 5)
                                                
At September 30, 2023
    
618
      
1,684
      
32
      
3
      
–
      
2,337
  
At December 31, 2022
    
640
      
1,677
      
32
      
3
      
–
      
2,352
  
Intangible assets, net: (see Note 6)
                                                
At September 30, 2023
    
839
      
1,700
      
1,170
      
112
      
–
      
3,821
  
At December 31, 2022
    
865
      
1,776
      
1,206
      
118
      
–
      
3,965
  
Goodwill: (see Note 6)
                                                
At September 30, 2023
    
2,811
      
1,841
      
–
      
956
      
–
      
5,608
  
At December 31, 2022
    
2,811
      
1,841
      
–
      
956
      
–
      
5,608
  
Segment assets:
                                                
At September 30, 2023
    
21,736
      
11,896
      
11,023
      
10,445
      
2,006
      
57,106
  
At December 31, 2022
    
21,599
      
12,054
      
10,959
      
8,847
      
2,867
      
56,326
  
Consolidated Revenues and Expenses
The following table presents additional information regarding our consolidated revenues and costs and expenses for the periods indicated:

 
  
For the Three Months
Ended September 30,
    
For the Nine Months
Ended September 30,
  
 
  
2023
    
2022
    
2023
    
2022
  
Consolidated revenues:
                        
NGL Pipelines & Services
  
$
3,757
    
$
6,237
    
$
12,375
    
$
18,371
  
Crude Oil Pipelines & Services
    
5,365
      
4,724
      
13,850
      
14,181
  
Natural Gas Pipelines & Services
    
884
      
1,886
      
2,874
      
4,696
  
Petrochemical & Refined Products Services
    
1,992
      
2,621
      
5,994
      
7,288
  
Total consolidated revenues
  
$
11,998
    
$
15,468
    
$
35,093
    
$
44,536
  
 
                                
Consolidated costs and expenses
                                
Operating costs and expenses:
                                
Cost of sales
  
$
8,786
    
$
12,319
    
$
25,796
    
$
35,325
  
Other operating costs and expenses (1)
    
986
      
926
      
2,749
      
2,567
  
Depreciation, amortization and accretion
    
583
      
537
      
1,692
      
1,607
  
Asset impairment charges
    
11
      
29
      
27
      
48
  
Net losses (gains) attributable to asset sales and related matters
    
–
      
1
      
(4
)
    
3
  
General and administrative costs
    
59
      
55
      
172
      
179
  
Total consolidated costs and expenses
  
$
10,425
    
$
13,867
    
$
30,432
    
$
39,729
  

(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.