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Consolidated Balance Sheet (Parenthetical) (Unaudited) - Williams - USD ($)
shares in Thousands, $ in Millions
Jun. 30, 2026
Dec. 31, 2025
Accounts Receivable, Allowance for Credit Loss, Current $ 1 $ 1
Common Stock, Par or Stated Value Per Share $ 1 $ 1
Common Stock, Shares Authorized 1,470,000 1,470,000
Common Stock, Shares, Issued 1,262,000 1,261,000
Treasury Stock, Common, Shares 39,000 39,000
Series B Preferred Stock [Member]    
Preferred Stock, Par or Stated Value Per Share $ 1 $ 1
Preferred Stock, Shares Authorized 30,000 30,000
Preferred Stock, Shares Issued 35 35