Consolidated Statement of Comprehensive Income (Loss) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Comprehensive income (loss):
Net income (loss)	$ 662	$ 957
Designated interest rate cash flow hedging activities:
Net unrealized gain (loss) from derivative instruments, net of taxes of ($3) in 2024 and $(7) in 2023	11	20
Reclassifications into earnings of net derivative instruments (gain) loss, net of taxes of $— in 2024 and $— in 2023	(1)	0
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 $— in 2024 and $— in 2023	0	1
Other comprehensive income (loss)	10	21
Comprehensive income (loss)	672	978
Less: Comprehensive income (loss) attributable to noncontrolling interests	30	30
Comprehensive income (loss) attributable to The Williams Companies, Inc.	$ 642	$ 948