Consolidated Statement of Income - USD ($) shares in Thousands, $ in Millions		12 Months Ended
		Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Revenues:
Revenues		$ 10,907	$ 10,965	$ 10,627
Costs and expenses:
Operating and maintenance expenses		1,984	1,817	1,548
Depreciation and amortization expenses		2,071	2,009	1,842
Selling, general, and administrative expenses		665	636	558
Gain on sale of business (Note 3)		(129)	0	0
Other (income) expense – net		(30)	28	16
Total costs and expenses		6,596	7,947	7,996
Operating income (loss)		4,311	3,018	2,631
Equity earnings (losses)		589	637	608
Other investing income (loss) – net		108	16	7
Interest expense		(1,236)	(1,147)	(1,179)
Gain (Loss) Related to Litigation Settlement		534	0	0
Other income (expense) – net		99	18	6
Income (loss) before income taxes		4,405	2,542	2,073
Less: Provision (benefit) for income taxes		1,005	425	511
Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest		3,400	2,117	1,562
Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest		(97)	0	0
Net income (loss)		3,303	2,117	1,562
Less: Net income (loss) attributable to noncontrolling interests		124	68	45
Net income (loss) attributable to The Williams Companies, Inc.		3,179	2,049	1,517
Less: Preferred stock dividends		3	3	3
Net income (loss) available to common stockholders		3,176	2,046	1,514
Amounts attributable to The Williams Companies, Inc. available to common stockholders:
Income (loss) from continuing operations available to common stockholders		$ 3,273	$ 2,046	$ 1,514
Basic earnings (loss) per common share:
Basic		$ 2.69	$ 1.68	$ 1.25
Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Basic Share		(0.08)	0	0
Net income (loss)		$ 2.61	$ 1.68	$ 1.25
Weighted-average shares (thousands)		1,217,784	1,218,362	1,215,221
Diluted earnings (loss) per common share:
Diluted		$ 2.68	$ 1.67	$ 1.24
Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Diluted Share		(0.08)	0	0
Net income (loss)		$ 2.60	$ 1.67	$ 1.24
Weighted-average shares (thousands)		1,222,715	1,222,672	1,218,215
Service [Member]
Revenues:
Revenues		$ 7,026	$ 6,536	$ 6,001
NonRegulated Service Commodity Consideration [Member]
Revenues:
Revenues		146	260	238
Product [Member]
Revenues:
Revenues		2,779	4,556	4,536
Energy Commodities and Service
Revenues:
Revenues	[1]	956	(387)	(148)
Oil and Gas, Purchased [Member]
Costs and expenses:
Cost of Goods and Service, Excluding Depreciation, Depletion, and Amortization		1,884	3,369	3,931
Natural Gas Purchased For Shrink [Member]
Costs and expenses:
Cost of Goods and Service, Excluding Depreciation, Depletion, and Amortization		$ 151	$ 88	$ 101

[1] We record transactions that qualify as commodity derivatives at fair value with changes in fair value recognized in earnings in the period of change and characterized as unrealized gains or losses. Gains and losses from commodity derivatives held for energy trading purposes are presented on a net basis in revenue.