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Income Taxes
 6 Months Ended
Jun. 30, 2024
Income Taxes [Abstract]  
Income Taxes
Note 15.  Income Taxes

Income taxes are accounted for under the asset-and-liability method.  Deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases and operating loss and tax credit carryforwards.  Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled.  The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that includes the enactment date.  We recognize the effect of income tax positions only if those positions are more likely than not of being sustained.  Recognized income tax positions are measured at the largest amount that is greater than 50% likely of being realized.  Changes in recognition or measurement are reflected in the period in which the change in judgment occurs.  We did not rely on any uncertain tax positions in recording our income tax-related amounts during the three and six months ended June 30, 2024 and 2023.

Our federal, state and foreign income tax benefit (provision) is summarized below:

 
  
For the Three Months
Ended June 30,
    
For the Six Months
Ended June 30,
  
 
  
2024
    
2023
    
2024
    
2023
  
Current portion of income tax provision:
                        
Federal
  
$
–
    
$
(14
)
  
$
–
    
$
(10
)
State
    
(10
)
    
(10
)
    
(22
)
    
(21
)
Total current portion
    
(10
)
    
(24
)
    
(22
)
    
(31
)
Deferred portion of income tax provision:
                                
    Federal
    
(4
)
    
11
      
(8
)
    
4
  
    State
    
(1
)
    
–
      
(6
)
    
4
  
Total deferred portion
    
(5
)
    
11
      
(14
)
    
8
  
Total provision for income taxes
  
$
(15
)
  
$
(13
)
  
$
(36
)
  
$
(23
)

A reconciliation of the provision for income taxes with amounts determined by applying the statutory U.S. federal income tax rate to income before income taxes is as follows:

 
  
For the Three Months
Ended June 30,
    
For the Six Months
Ended June 30,
  
 
  
2024
    
2023
    
2024
    
2023
  
Pre-Tax Net Book Income (“NBI”)
  
$
1,437
    
$
1,296
    
$
2,941
    
$
2,728
  
                                 
Texas Margin Tax (1)
    
(10
)
    
(10
)
    
(27
)
    
(16
)
State income tax provision, net of federal benefit
    
–
      
–
      
–
      
(1
)
Federal income tax provision computed by applying
     the federal statutory rate to NBI of corporate entities
    
(5
)
    
(3
)
    
(8
)
    
(6
)
Other
    
–
      
–
      
(1
)
    
–
  
Provision for income taxes
  
$
(15
)
  
$
(13
)
  
$
(36
)
  
$
(23
)
 
                                
Effective income tax rate
    
(1.0
)%
    
(1.0
)%
    
(1.2
)%
    
(0.8
)%

(1)
Although the Texas Margin Tax is not considered a state income tax, it has the characteristics of an income tax since it is determined by applying a tax rate to a base that considers our Texas-sourced revenues and expenses.

The following table presents the significant components of deferred tax assets and deferred tax liabilities at the dates indicated:

   
June 30,
    
December 31,
  
 
  
2024
    
2023
  
Deferred tax liabilities:
            
Attributable to investment in OTA (1)
  
$
450
    
$
436
  
Attributable to property, plant and equipment
    
143
      
138
  
Attributable to investments in other entities
    
4
      
4
  
Other
    
84
      
83
  
     Total deferred tax liabilities
    
681
      
661
  
Deferred tax assets:
                
Net operating loss carryovers (2)
    
52
      
46
  
Temporary differences related to Texas Margin Tax
    
4
      
4
  
Total deferred tax assets
    
56
      
50
  
Total net deferred tax liabilities
  
$
625
    
$
611
  

(1)
Represents the deferred tax liability balance held by our wholly owned subsidiary, OTA Holdings, Inc. ("OTA"), which we acquired in March 2020.
(2)
The loss amount presented as of June 30, 2024 has an indefinite carryover period.  All losses are subject to limitations on their utilization.