Consolidated Balance Sheet (Parenthetical) (Unaudited) - Williams - USD ($) shares in Thousands, $ in Millions	Mar. 31, 2025	Dec. 31, 2024
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	1,260,000	1,258,000
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