v3.26.1
FAIR VALUE MEASUREMENTS (Details) - NGSP - USD ($)
$ in Thousands
Dec. 31, 2025
Dec. 31, 2024
EBP, Investment, Fair Value and NAV [Line Items]    
Plan interest in master trust $ 39,301,997 $ 35,040,516
BrokerageLink Account    
EBP, Investment, Fair Value and NAV [Line Items]    
Total investments 4,641,343 4,024,861
State Street Bank and Trust Company short-term investment fund    
EBP, Investment, Fair Value and NAV [Line Items]    
Total investments 143 902
Level 1    
EBP, Investment, Fair Value and NAV [Line Items]    
Plan interest in master trust 4,048,009 3,594,055
Total investments 4,577,861 3,968,127
Level 1 | Cash equivalents and short-term investment fund    
EBP, Investment, Fair Value and NAV [Line Items]    
Plan interest in master trust 0 18
Level 1 | U.S. equities    
EBP, Investment, Fair Value and NAV [Line Items]    
Plan interest in master trust 4,048,009 3,594,037
Level 1 | Collateral held under securities lending agreements    
EBP, Investment, Fair Value and NAV [Line Items]    
Plan interest in master trust 0 0
Level 1 | Common/collective trust funds    
EBP, Investment, Fair Value and NAV [Line Items]    
Plan interest in master trust
Level 1 | BrokerageLink Account    
EBP, Investment, Fair Value and NAV [Line Items]    
Total investments 4,577,861 3,968,127
Level 1 | State Street Bank and Trust Company short-term investment fund    
EBP, Investment, Fair Value and NAV [Line Items]    
Total investments 0 0
Level 2    
EBP, Investment, Fair Value and NAV [Line Items]    
Plan interest in master trust 278,241 786,546
Total investments 63,625 57,636
Level 2 | Cash equivalents and short-term investment fund    
EBP, Investment, Fair Value and NAV [Line Items]    
Plan interest in master trust 78,177 93,041
Level 2 | U.S. equities    
EBP, Investment, Fair Value and NAV [Line Items]    
Plan interest in master trust 0 0
Level 2 | Collateral held under securities lending agreements    
EBP, Investment, Fair Value and NAV [Line Items]    
Plan interest in master trust 200,064 693,505
Level 2 | Common/collective trust funds    
EBP, Investment, Fair Value and NAV [Line Items]    
Plan interest in master trust
Level 2 | BrokerageLink Account    
EBP, Investment, Fair Value and NAV [Line Items]    
Total investments 63,482 56,734
Level 2 | State Street Bank and Trust Company short-term investment fund    
EBP, Investment, Fair Value and NAV [Line Items]    
Total investments 143 902
Total    
EBP, Investment, Fair Value and NAV [Line Items]    
Plan interest in master trust 36,953,901 33,060,233
Total investments 4,641,486 4,025,763
Total | Cash equivalents and short-term investment fund    
EBP, Investment, Fair Value and NAV [Line Items]    
Plan interest in master trust 78,177 93,059
Total | U.S. equities    
EBP, Investment, Fair Value and NAV [Line Items]    
Plan interest in master trust 4,048,009 3,594,037
Total | Collateral held under securities lending agreements    
EBP, Investment, Fair Value and NAV [Line Items]    
Plan interest in master trust 200,064 693,505
Total | Common/collective trust funds    
EBP, Investment, Fair Value and NAV [Line Items]    
Plan interest in master trust 32,627,651 28,679,632
Total | BrokerageLink Account    
EBP, Investment, Fair Value and NAV [Line Items]    
Total investments 4,641,343 4,024,861
Total | State Street Bank and Trust Company short-term investment fund    
EBP, Investment, Fair Value and NAV [Line Items]    
Total investments $ 143 $ 902