Long-Term Debt Issuances and Retirements (Details) - USD ($) $ in Millions	Oct. 17, 2022	May 16, 2022	Jan. 18, 2022	Sep. 01, 2021	Aug. 16, 2021	Aug. 17, 2020	Mar. 15, 2020	Jan. 15, 2020	Dec. 31, 2022	Aug. 08, 2022	Dec. 31, 2021	Oct. 08, 2021	Mar. 02, 2021	May 14, 2020	May 08, 2020
The Williams Companies, Inc. [Member] | 3.7% Senior Unsecured Notes Due 2023 [Member]
Debt Instrument [Line Items]
Extinguishment of Debt, Amount	$ 850
Long-term debt interest rate	3.70%								3.70%
Long-term debt									$ 0		$ 850
The Williams Companies, Inc. [Member] | 4.65 Percent Senior Unsecured Notes Due 2032
Debt Instrument [Line Items]
Long-term debt interest rate									4.65%	4.65%
Long-term debt face amount										$ 1,000
Long-term debt									$ 1,000		0
The Williams Companies, Inc. [Member] | 5.3 Percent Senior Unsecured Notes Due 2052
Debt Instrument [Line Items]
Long-term debt interest rate									5.30%	5.30%
Long-term debt face amount										$ 750
Long-term debt									$ 750		0
The Williams Companies, Inc. [Member] | 3.35% Senior Unsecured Notes Due 2022 [Member]
Debt Instrument [Line Items]
Extinguishment of Debt, Amount		$ 750
Long-term debt interest rate		3.35%							3.35%
Long-term debt									$ 0		750
The Williams Companies, Inc. [Member] | 3.6% Senior Unsecured Notes Due 2022 [Member]
Debt Instrument [Line Items]
Extinguishment of Debt, Amount			$ 1,250
Long-term debt interest rate			3.60%						3.60%
Long-term debt									$ 0		1,250
The Williams Companies, Inc. [Member] | 2.6 Percent Senior Unsecured Notes Due 2031
Debt Instrument [Line Items]
Long-term debt interest rate									2.60%			2.60%	2.60%
Long-term debt face amount												$ 600	$ 900
Long-term debt									$ 1,500		1,500
The Williams Companies, Inc. [Member] | 3.5 Percent Senior Unsecured Notes Due 2051
Debt Instrument [Line Items]
Long-term debt interest rate									3.50%			3.50%
Long-term debt face amount												$ 650
Long-term debt									$ 650		650
The Williams Companies, Inc. [Member] | 7.875% Senior Unsecured Notes Due 2021 [Member]
Debt Instrument [Line Items]
Extinguishment of Debt, Amount				$ 371
Long-term debt interest rate				7.875%
The Williams Companies, Inc. [Member] | 4% Senior Unsecured Notes Due 2021 [Member]
Debt Instrument [Line Items]
Extinguishment of Debt, Amount					$ 500
Long-term debt interest rate					4.00%
The Williams Companies, Inc. [Member] | 4.125% Senior Unsecured Notes Due 2020 [Member]
Debt Instrument [Line Items]
Extinguishment of Debt, Amount						$ 600
Long-term debt interest rate						4.125%
The Williams Companies, Inc. [Member] | 3.5 Percent Senior Unsecured Notes Due 2030 [Member]
Debt Instrument [Line Items]
Long-term debt interest rate									3.50%					3.50%
Long-term debt face amount														$ 1,000
Long-term debt									$ 1,000		1,000
The Williams Companies, Inc. [Member] | 5.25% Senior Unsecured Notes Due 2020 [Member]
Debt Instrument [Line Items]
Extinguishment of Debt, Amount							$ 1,500
Long-term debt interest rate							5.25%
The Williams Companies, Inc. [Member] | 8.75 Percent Senior Unsecured Notes Due 2020 [Member]
Debt Instrument [Line Items]
Extinguishment of Debt, Amount								$ 14
Long-term debt interest rate								8.75%
Transcontinental Gas Pipe Line Company, LLC [Member] | 3.25 Percent Senior Unsecured Notes Due 2030 [Member]
Debt Instrument [Line Items]
Long-term debt interest rate									3.25%						3.25%
Long-term debt face amount															$ 700
Long-term debt									$ 700		700
Transcontinental Gas Pipe Line Company, LLC [Member] | 3.95 Percent Senior Unsecured Notes Due 2050 [Member]
Debt Instrument [Line Items]
Long-term debt interest rate									3.95%						3.95%
Long-term debt face amount															$ 500
Long-term debt									$ 500		$ 500
Transcontinental Gas Pipe Line Company, LLC [Member] | Atlantic Sunrise [Member]
Debt Instrument [Line Items]
Long-term debt interest rate									9.00%
Transcontinental Gas Pipe Line Company, LLC [Member] | Leidy South
Debt Instrument [Line Items]
Long-term debt interest rate									13.00%
Transcontinental Gas Pipe Line Company, LLC [Member] | Dalton [Member]
Debt Instrument [Line Items]
Long-term debt interest rate									9.00%