Consolidated Statement of Operations (Unaudited) - USD ($) shares in Thousands, $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Revenues:
Revenues	$ 1,913	$ 2,054
Costs and expenses:
Operating and maintenance expenses	337	340
Depreciation and amortization expenses	429	416
Selling, general, and administrative expenses	113	128
Impairment of goodwill (Note 11)	187	0
Other (income) expense – net	7	44
Total costs and expenses	1,482	1,493
Operating income (loss)	431	561
Equity earnings (losses) (Note 5)	22	80
Impairment of equity-method investments (Note 11)	(938)	(74)
Other investing income (loss) – net	3	1
Interest incurred	(301)	(306)
Interest capitalized	5	10
Other income (expense) – net	4	11
Income (loss) before income taxes	(774)	283
Provision (benefit) for income taxes	(204)	69
Net income (loss)	(570)	214
Less: Net income (loss) attributable to noncontrolling interests	(53)	19
Net income (loss) attributable to The Williams Companies, Inc.	(517)	195
Preferred stock dividends	1	1
Net income (loss) available to common stockholders	$ (518)	$ 194
Basic earnings (loss) per common share:
Net income (loss)	$ (0.43)	$ 0.16
Weighted-average shares (thousands)	1,213,019	1,211,489
Diluted earnings (loss) per common share:
Net income (loss)	$ (0.43)	$ 0.16
Weighted-average shares (thousands)	1,213,019	1,213,592
Service [Member]
Revenues:
Revenues	$ 1,474	$ 1,440
NonRegulated Service Commodity Consideration [Member]
Revenues:
Revenues	28	64
Product [Member]
Revenues:
Revenues	411	550
Oil and Gas, Purchased [Member]
Costs and expenses:
Product costs	396	525
Natural Gas Purchased For Shrink [Member]
Costs and expenses:
Product costs	$ 13	$ 40