Earnings (Loss) Per Common Share from Continuing Operations (Tables)

9 Months Ended

Sep. 30, 2013

Earnings Per Share [Abstract]

Earnings (loss) per common share from continuing operations

	Three months ended   September 30,				Nine months ended    September 30,
	2013		2012		2013		2012
	(Dollars in millions, except per-share amounts; shares in thousands)
Income (loss) from continuing operations attributable to The Williams Companies, Inc. available to common stockholders for basic and diluted earnings (loss) per common share	$	143	$	152	$	454	$	572
Basic weighted-average shares	683,274		626,809		682,744		613,888
Effect of dilutive securities:
Nonvested restricted stock units	1,901		2,490		1,975		2,721
Stock options	2,113		2,535		2,169		2,695
Convertible debentures	18		185		119		461
Diluted weighted-average shares	687,306		632,019		687,007		619,765
Earnings (loss) per common share from continuing operations:
Basic	$	.21	$	.25	$	.66	$	.94
Diluted	$	.20	$	.25	$	.66	$	.93