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Subsequent Events (Details) - USD ($) $ / shares in Units, $ in Millions			12 Months Ended
	Jan. 28, 2025	Jan. 15, 2025	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Jan. 09, 2025
Subsequent Event [Line Items]
Common Stock, Dividends, Per Share, Declared			$ 1.90	$ 1.79	$ 1.70
3.9% Senior Unsecured Notes Due 2025 [Member] \| Williams Companies Inc [Member]
Subsequent Event [Line Items]
Long-term debt interest rate			3.90%
Subsequent Event [Member]
Subsequent Event [Line Items]
Common Stock, Dividends, Per Share, Declared	$ 0.500
Subsequent Event [Member] \| 5.6 Percent Senior Unsecured Notes Due 2035 \| Williams Companies Inc [Member]
Subsequent Event [Line Items]
Debt Instrument, Face Amount						$ 1,000
Long-term debt interest rate						5.60%
Subsequent Event [Member] \| 6.0 Percent Senior Unsecured Notes Due 2055 \| Williams Companies Inc [Member]
Subsequent Event [Line Items]
Debt Instrument, Face Amount						$ 500
Long-term debt interest rate						6.00%
Subsequent Event [Member] \| 3.9% Senior Unsecured Notes Due 2025 [Member] \| Williams Companies Inc [Member]
Subsequent Event [Line Items]
Long-term debt interest rate		3.90%
Extinguishment of Debt, Amount		$ 750