Consolidated Statement of Operations (USD $) In Millions, except Share data in Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011		Dec. 31, 2010	Dec. 31, 2009
Revenues:
Total revenues	$ 7,930		$ 6,638	$ 5,278
Segment costs and expenses:
Costs and operating expenses	5,550		4,712	3,712
Selling, general, and administrative expenses	325		313	330
Other (income) expense - net	1		(15)	(34)
Total segment costs and expenses	5,876		5,010	4,008
General corporate expenses	187		221	164
Operating income (loss):
Operating Income (Loss)	1,867		1,407	1,106
Interest accrued	(598)		(628)	(656)
Interest capitalized	25		36	61
Investing income - net	168		188	38
Early debt retirement costs	(271)		(606)	(1)
Other income (expense) - net	11		(12)	2
Income (loss) from continuing operations before income taxes	1,202		385	550
Provision (benefit) for income taxes	124		114	204
Income (loss) from continuing operations	1,078		271	346
Income (loss) from discontinued operations	(417)		(1,193)	15
Net income (loss)	661		(922)	361
Less: Net income attributable to noncontrolling interests	285		175	76
Net income (loss) attributable to The Williams Companies, Inc.	376		(1,097)	285
Amounts attributable to The Williams Companies, Inc.:
Income (loss) from continuing operations	803	[1]	104	206
Income (loss) from discontinued operations	(427)		(1,201)	79
Net income (loss)	376		(1,097)	285
Basic earnings (loss) per common share:
Incom (loss) from continuing operations	$ 1.36		$ 0.17	$ 0.35
Income (loss) from discontinued operations	$ (0.72)		$ (2.05)	$ 0.14
Net income (loss)	$ 0.64		$ (1.88)	$ 0.49
Weighted-average shares (thousands)	588,553		584,552	581,674
Diluted earnings (loss) per common share:
Income (loss) from continuing operations	$ 1.34		$ 0.17	$ 0.35
Income (loss) from discontinued operations	$ (0.71)		$ (2.03)	$ 0.14
Net income (loss)	$ 0.63		$ (1.86)	$ 0.49
Weighted-average shares (thousands)	598,175		590,699	585,955
Williams Partners [Member]
Revenues:
Total revenues	6,729		5,715	4,602
Operating income (loss):
Operating Income (Loss)	1,754		1,465	1,236
Midstream Canada & Olefins [Member]
Revenues:
Total revenues	1,312		1,033	753
Operating income (loss):
Operating Income (Loss)	300		172	37
Other [Member]
Revenues:
Total revenues	25		24	27
Operating income (loss):
Operating Income (Loss)	0		(9)	(3)
General Corporate Expenses [Member]
Operating income (loss):
Operating Income (Loss)	(187)		(221)	(164)
Intercompany eliminations [Member]
Revenues:
Total revenues	$ (136)		$ (134)	$ (104)

[1] 2011 includes $.7 million of interest expense, net of tax, associated with our convertible debentures. (See Note 12.) This amount has been added back to income (loss) from continuing operations attributable to The Williams Companies, Inc. available to common stockholders to calculate diluted earnings per common share.