v3.26.1
Net Asset Value (Tables)
12 Months Ended
Dec. 31, 2025
EBP 001 [Member]  
Employee Benefit Plan Investment Fair Value Estimated Nav [Line Items]  
Summary of estimate fair value
Net Asset Value of the trust funds’ units held by the Plan at year end, is used as a practical expedient to estimate fair value. The NAV is based on the fair value of the underlying investments held by the fund less its liabilities. The Plan’s investments for which fair values are estimated using NAV per unit are summarized in the following table:
 
     Unfunded
Commitment
     Redemption
Frequency
     Other
Restrictions
     Redemption
Notice
Period
     Fair Value  
December 31,
                              
2025
     2024  
(thousands of dollars)
                                         
Common collective trust funds
1
                 
Foreign Large-Blend Portfolio (BlackRock)
     None        Daily        None        1 day     
 
37,418
 
     28,752  
U.S. Large Cap Blend Fund (BlackRock)
     None        Daily        None        1 day     
 
423,021
 
     375,530  
Fixed Income Index Fund (BlackRock)
     None        Daily        None        2 days     
 
22,640
 
     17,250  
LifePath Funds (BlackRock)
     None        Daily        None        3 days     
 
761,385
 
     644,019  
              
 
 
    
 
 
 
              
 
1,244,464
 
     1,065,551  
              
 
 
    
 
 
 
Stable Value Trust Fund (T. Rowe Price)
2
     None        Daily        None        12 months     
 
37,048
 
     39,926  
              
 
 
    
 
 
 
              
 
1,281,512
 
     1,105,477  
              
 
 
    
 
 
 
 
1
Pooled funds invested primarily in other collective investment funds.
2
Pooled funds invested in guaranteed investment contracts issued by insurance companies; investments contracts issued by banks; structured or synthetic investments contracts issued by banks, insurance companies, and other issuers; separate account contracts and other similar instruments that are intended to maintain a constant NAV.