Consolidated Statement of Income (Unaudited) (USD $) In Millions, except Share data in Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Revenues:
Service revenues	$ 736	$ 675	$ 2,163	$ 2,019
Product sales	887	1,077	3,037	3,598
Total revenues	1,623	1,752	5,200	5,617
Costs and expenses:
Product costs	710	771	2,301	2,628
Operating and maintenance expenses	269	261	820	766
Depreciation and amortization epxenses	207	196	606	545
Selling, general, and administrative expenses	130	137	385	415
Other (income) expense - net	(29)	14	(24)	31
Total costs and expenses	1,287	1,379	4,088	4,385
Operating income (loss)	336	373	1,112	1,232
Equity earnings (losses)	37	30	93	88
Interest incurred	(151)	(140)	(454)	(421)
Interest capitalized	27	11	75	33
Other investing income - net	10	3	62	75
Other income (expense) - net	1	0	1	(1)
Income (loss) from continuing operations before income taxes	260	277	889	1,006
Provision (benefit) for income taxes	62	77	260	281
Income (loss) from continuing operations	198	200	629	725
Income (loss) from discontinued operations	(1)	3	(10)	138
Net income (loss)	197	203	619	863
Less: Net income attributable to noncontrolling interests	56	48	175	153
Net income (loss) attributable to The Williams Companies, Inc.	141	155	444	710
Amounts attributable to The Williams Companies, Inc.:
Income (loss) from continuing operations	143	152	454	572
Income (loss) from discontinued operations	(2)	3	(10)	138
Net income (loss)	$ 141	$ 155	$ 444	$ 710
Basic earnings (loss) per common share:
Income (loss) from continuing operations	$ 0.21	$ 0.25	$ 0.66	$ 0.94
Income (loss) from discontinued operations	$ 0.00	$ 0.00	$ (0.01)	$ 0.22
Net income (loss)	$ 0.21	$ 0.25	$ 0.65	$ 1.16
Weighted-average shares (thousands)	683,274	626,809	682,744	613,888
Diluted earnings (loss) per common share:
Income (loss) from continuing operations	$ 0.20	$ 0.25	$ 0.66	$ 0.93
Income (loss) from discontinued operations	$ 0.00	$ 0.00	$ (0.01)	$ 0.22
Net income (loss)	$ 0.20	$ 0.25	$ 0.65	$ 1.15
Weighted-average shares (thousands)	687,306	632,019	687,007	619,765
Cash dividends declared per common share	$ 0.36625	$ 0.3125	$ 1.0575	$ 0.87125