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Intangible Assets and Goodwill
 3 Months Ended
Mar. 31, 2022
Intangible Assets and Goodwill [Abstract]  
Intangible Assets and Goodwill
Note 6.  Intangible Assets and Goodwill

Identifiable Intangible Assets

The following table summarizes our intangible assets by business segment at the dates indicated:

   
March 31, 2022
    
December 31, 2021
  
 
  
Gross
Value
    
Accumulated
Amortization
    
Carrying
Value
    
Gross
Value
    
Accumulated
Amortization
    
Carrying
Value
  
NGL Pipelines & Services:
                                    
Customer relationship intangibles
  
$
449
    
$
(238
)
  
$
211
    
$
449
    
$
(236
)
  
$
213
  
Contract-based intangibles
    
749
      
(67
)
    
682
      
165
      
(61
)
    
104
  
Segment total
    
1,198
      
(305
)
    
893
      
614
      
(297
)
    
317
  
Crude Oil Pipelines & Services:
                                                
Customer relationship intangibles
    
2,195
      
(373
)
    
1,822
      
2,195
      
(355
)
    
1,840
  
Contract-based intangibles
    
283
      
(265
)
    
18
      
283
      
(263
)
    
20
  
Segment total
    
2,478
      
(638
)
    
1,840
      
2,478
      
(618
)
    
1,860
  
Natural Gas Pipelines & Services:
                                                
Customer relationship intangibles
    
1,350
      
(559
)
    
791
      
1,350
      
(550
)
    
800
  
Contract-based intangibles
    
639
      
(185
)
    
454
      
232
      
(183
)
    
49
  
Segment total
    
1,989
      
(744
)
    
1,245
      
1,582
      
(733
)
    
849
  
Petrochemical & Refined Products Services:
                                                
Customer relationship intangibles
    
181
      
(77
)
    
104
      
181
      
(75
)
    
106
  
Contract-based intangibles
    
45
      
(26
)
    
19
      
45
      
(26
)
    
19
  
Segment total
    
226
      
(103
)
    
123
      
226
      
(101
)
    
125
  
Total intangible assets
  
$
5,891
    
$
(1,790
)
  
$
4,101
    
$
4,900
    
$
(1,749
)
  
$
3,151
  

The following table presents the amortization expense of our intangible assets by business segment for the periods indicated:

 
  
For the Three Months
Ended March 31,
  
 
  
2022
    
2021
  
NGL Pipelines & Services
  
$
8
    
$
6
  
Crude Oil Pipelines & Services
    
20
      
18
  
Natural Gas Pipelines & Services
    
11
      
10
  
Petrochemical & Refined Products Services
    
2
      
2
  
Total
  
$
41
    
$
36
  

The following table presents our forecast of amortization expense associated with existing intangible assets for the periods indicated:

Remainder
of 2022
    
2023
    
2024
    
2025
    
2026
  
$
148
    
$
204
    
$
212
    
$
211
    
$
206
  

Goodwill

Goodwill represents the excess of the purchase price of an acquired business over the amounts assigned to assets acquired and liabilities assumed in the transaction.  The following table presents changes in the carrying amount of goodwill for the period presented:

 
  
NGL
Pipelines
& Services
    
Crude Oil
Pipelines
& Services
    
Natural Gas
Pipelines
& Services
    
Petrochemical
& Refined
Products
Services
    
Consolidated
Total
  
Balance at December 31, 2021
  
$
2,652
    
$
1,841
    
$
–
    
$
956
    
$
5,449
  
Goodwill related to acquisition (1)
    
159
      
–
      
–
      
–
      
159
  
Balance at March 31, 2022
  
$
2,811
    
$
1,841
    
$
–
    
$
956
    
$
5,608
  

(1)
This amount represents the goodwill recognized in connection with our acquisition of Navitas Midstream in February 2022.  See Note 12 for additional information regarding this acquisition.