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Note 7 - Income Taxes (Tables)
12 Months Ended
Dec. 31, 2022
Notes Tables  
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]

Millions

 

2022

  

2021

  

2020

 

Current tax expense:

            

Federal

 $1,465  $1,446  $1,026 

State

  340   347   259 

Foreign

  7   8   6 

Total current tax expense

  1,812   1,801   1,291 

Deferred and other tax expense/(benefit):

            

Federal

  320   199   295 

State [a]

  (59)  (44)  45 

Foreign

  1   (1)  - 

Total deferred and other tax expense

  262   154   340 

Total income tax expense

 $2,074  $1,955  $1,631 
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]

Tax Rate Percentages

 

2022

  

2021

  

2020

 

Federal statutory tax rate

  21.0

%

  21.0

%

  21.0

%

State statutory rates, net of federal benefits

  3.6   3.7   3.7 

Deferred tax adjustments

  (1.0)  (0.6)  (0.1)

Dividends received deduction

  (0.5)  (0.5)  (0.5)

Excess tax benefits from equity compensation plans

  (0.2)  (0.3)  (0.8)

Other

  -   (0.2)  0.1 

Effective tax rate

  22.9

%

  23.1

%

  23.4

%

Schedule of Deferred Tax Assets and Liabilities [Table Text Block]

Millions

 

2022

  

2021

 

Deferred income tax liabilities:

        

Property

 $(12,910) $(12,657)

Operating lease assets

  (411)  (441)

Other

  (591)  (534)

Total deferred income tax liabilities

  (13,912)  (13,632)

Deferred income tax assets:

        

Operating lease liabilities

  401   434 

Accrued casualty costs

  164   157 

Accrued wages

  50   45 

Stock compensation

  26   26 

Retiree benefits

  -   39 

Other

  238   256 

Total deferred income tax assets

  879   957 

Net deferred income tax liability

 $(13,033) $(12,675)
Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block]

Millions

 

2022

  

2021

  

2020

 

Unrecognized tax benefits at January 1

 $38  $74  $64 

Decreases for positions taken in prior years

  (4)  (24)  (19)

Increases for positions taken in current year

  3   3   18 

Lapse of statutes of limitations

  (3)  (1)  (1)

Refunds from/(payments to) and settlements with taxing authorities

  -   (12)  - 

Increases/(decreases) for interest and penalties

  -   (3)  5 

Increases for positions taken in prior years

  -   1   7 

Unrecognized tax benefits at December 31

 $34  $38  $74