Earnings (Loss) Per Common Share (Tables)

3 Months Ended

Mar. 31, 2017

Earnings Per Share [Abstract]

Earnings (loss) per common share [Table Text Block]

	Three Months Ended   March 31,
	2017		2016
	(Dollars in millions, except per-share amounts; shares in thousands)
Net income (loss) attributable to The Williams Companies, Inc. available to common stockholders for basic and diluted earnings (loss) per common share	$	373	$	(65	)
Basic weighted-average shares	824,548		750,332
Effect of dilutive securities:
Nonvested restricted stock units	1,305		—
Stock options	623		—
Diluted weighted-average shares	826,476		750,332
Earnings (loss) per common share:
Basic	$	.45	$	(.09	)
Diluted	$	.45	$	(.09	)