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

12 Months Ended

Dec. 31, 2012

Earnings Per Common Share from Continuing Operations [Abstract]

Earnings (loss) per common share from continuing operations

		Years Ended December 31,
		2012		2011		2010
		(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 (1)	$	723	$	803	$	104
Basic weighted-average shares			619,792		588,553		584,552
Effect of dilutive securities:
	Nonvested restricted stock units		2,694		4,332		3,190
	Stock options		2,608		3,374		2,957
	Convertible debentures		392		1,916		-
Diluted weighted-average shares			625,486		598,175		590,699
Earnings (loss) per common share from continuing operations:
	Basic	$	1.17	$	1.36	$	.17
	Diluted	$	1.15	$	1.34	$	.17

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• 2011 includes$.7 million of interest expense, net of tax, associatedwith our convertible debentures. (See Note13.) This amount has been added back to income (loss) from continuing operations attributable to The Williams Companies, Inc. available to common stockholdersto calculate diluted earnings percommon share.

Stock options excluded

	2012	2011	2010
Options excluded (millions)	-	0.9	2.4
Weighted-average exercise price of options excluded	$0.00	$29.68	$32.41
Exercise price ranges of options excluded	$0.00 - $0.00	$26.10 - $29.72	$22.68 - $40.51
Fourth quarter weighted-average market price	$33.38	$24.51	$22.47