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Provision (Benefit) for Income Taxes (Tables)
3 Months Ended
Mar. 31, 2025
Income Tax Expense (Benefit), Continuing Operations [Abstract]  
Schedule of Components of Provision (benefit) for income taxes [Table Text Block]
Williams’ Provision (benefit) for income taxes includes:
Three Months Ended March 31,
20252024
(Millions)
Current:
Federal$79 $35 
State
86 41 
Deferred:
Federal89 127 
State18 25 
107 152 
Provision (benefit) for income taxes$193 $193