Subsequent Events (Details) - USD ($) $ / shares in Units, $ in Millions		1 Months Ended	12 Months Ended
	Jan. 30, 2024	Jan. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Jan. 05, 2024
Subsequent Event [Line Items]
Common Stock, Dividends, Per Share, Declared			$ 1.79	$ 1.70	$ 1.64
Subsequent Event [Member]
Subsequent Event [Line Items]
Common Stock, Dividends, Per Share, Declared	$ 0.475
Subsequent Event [Member] | Williams Companies Inc [Member] | 4.9 Percent Senior Unsecured Notes Due 2029
Subsequent Event [Line Items]
Debt Instrument, Face Amount						$ 1,100
Long-term debt interest rate						4.90%
Subsequent Event [Member] | Williams Companies Inc [Member] | 5.15 Percent Senior Unsecured Notes Due 2034
Subsequent Event [Line Items]
Debt Instrument, Face Amount						$ 1,000
Long-term debt interest rate						5.15%
Subsequent Event [Member] | Commercial Paper [Member] | Williams Companies Inc [Member]
Subsequent Event [Line Items]
Repayments of Commercial Paper		$ 725