Consolidated Statement of Comprehensive Income (Unaudited) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Comprehensive income (loss):
Net income (loss)	$ 1,708	$ 197	$ 2,031	$ 619
Cash flow hedging activities:
Net unrealized gain (loss) from derivative instruments, net of taxes	0	1	0	1
Reclassifications into earnings of net derivative instruments (gain) loss, net of taxes	0	(1)	0	(1)
Foreign currency translation adjustments, net of taxes	(51)	20	(58)	(31)
Pension and other postretirement benefits:
Prior service credit (cost) arising during the year, net of taxes	0	15	0	15
Amortization of prior service cost (credit) included in net periodic benefit cost, net of taxes	(1)	0	(3)	(1)
Net actuarial gain (loss) arising during the year, net of taxes	0	12	0	12
Amortization of actuarial (gain) loss included in net periodic benefit cost, net of taxes	6	9	18	29
Other comprehensive income (loss)	(46)	56	(43)	24
Comprehensive income (loss)	1,662	253	1,988	643
Less: Comprehensive income (loss) attributable to noncontrolling interest	12	56	105	175
Comprehensive Income (loss) attributable to The Williams Companies, Inc.	$ 1,650	$ 197	$ 1,883	$ 468