Consolidated Statement of Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Comprehensive income (loss):
Net income (loss)	$ (570)	$ 214
Pension and other postretirement benefits:
Net actuarial gain (loss) arising during the year, net of taxes of $4 in 2020	(14)	0
Amortization of actuarial (gain) loss and net actuarial loss from settlements included in net periodic benefit cost (credit), net of taxes of ($2) in 2020 and ($1) in 2019	8	3
Other comprehensive income (loss)	(6)	3
Comprehensive income (loss)	(576)	217
Less: Comprehensive income (loss) attributable to noncontrolling interests	(53)	19
Comprehensive income (loss) attributable to The Williams Companies, Inc.	$ (523)	$ 198