Consolidated Statement of Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Comprehensive income (loss):
Net income (loss)	$ 392	$ 435
Cash flow hedging activities:
Net unrealized gain (loss) from derivative instruments, net of taxes of ($1) in 2022 and $2 in 2021	3	(9)
Reclassifications into earnings of net derivative instruments (gain) loss, net of taxes of $— in 2022 and $— in 2021	0	2
Pension and other postretirement benefits:
Amortization of actuarial (gain) loss and net actuarial loss from settlements included in net periodic benefit cost (credit), net of taxes of ($1) in 2022 and ($1) in 2021	2	3
Other comprehensive income (loss)	5	(4)
Comprehensive income (loss)	397	431
Less: Comprehensive income (loss) attributable to noncontrolling interests	12	9
Comprehensive income (loss) attributable to The Williams Companies, Inc.	$ 385	$ 422