Leases (Tables)

12 Months Ended

Dec. 31, 2024

Leases [Abstract]

Lease, Cost [Table Text Block]

Williams

	Year Ended December 31,
	2024		2023		2022
	(Millions)
Lease Cost:
Operating lease cost	$	39	$	38	$	34
Variable lease cost	31		31		26
Sublease income	—		(1)		—
Total lease cost	$	70	$	68	$	60
Cash paid for operating lease liabilities	$	37	$	37	$	33

	December 31,
	2024		2023
	(Dollars in Millions)
Other Information:
Right-of-use assets (included in Regulatory assets, deferred charges, and other)	$	154	$	159
Operating lease liabilities:
Current (included in Other current liabilities)	$	26	$	24
Noncurrent (included in Regulatory liabilities, deferred income, and other)	$	142	$	148
Weighted-average remaining lease term – operating leases (years)	11		11
Weighted-average discount rate – operating leases	4.90%		4.78%

Transco

	Year Ended December 31,
	2024		2023		2022
	(Millions)
Lease Cost:
Operating lease cost	$	9	$	9	$	9
Variable lease cost	7		7		7
Total lease cost	$	16	$	16	$	16
Cash paid for operating lease liabilities	$	9	$	10	$	10
			December 31,
			2024		2023
			(Dollars in Millions)
Other Information:
Right-of-use assets (included in Deferred charges and other in Transco’s Balance Sheet)			$	48	$	53
Operating lease liabilities:
Current (included in Other current liabilities in Transco’s Balance Sheet)			$	6	$	6
Noncurrent (included in Deferred income and other in Transco’s Balance Sheet)			$	51	$	56
Weighted-average remaining lease term – operating leases (years)			13		13
Weighted-average discount rate – operating leases			4.77%		4.73%

NWP

	Year Ended December 31,
	2024		2023		2022
	(Millions)
Lease Cost:
Operating lease cost	$	3	$	1		$	1
Variable lease cost	1		1			1
Total lease cost	$	4	$	2		$	2
Cash paid for operating lease liabilities	$	2	$	1		$	1
			December 31,
			2024			2023
			(Dollars in Millions)
Other Information:
Right-of-use assets (included in Deferred charges and other in NWP’s Balance Sheet)			$	5		$	9
Operating lease liabilities:
Current (included in Other current liabilities in NWP’s Balance Sheet)			$	1		$	1
Noncurrent (included in Deferred income and other in NWP’s Balance Sheet)			$	5		$	7
Weighted-average remaining lease term – operating leases (years)			19			15
Weighted-average discount rate – operating leases			4.90%			4.18%

Lessee, Operating Lease, Liability, Maturity [Table Text Block]

At December 31, 2024, the following table represents operating lease maturities, including renewal provisions Williams has assessed as being reasonably certain of exercise, for each of the years ended December 31:

	(Millions)
2025	$	34
2026	33
2027	30
2028	22
2029	19
Thereafter	86
Total future lease payments	224
Less: Amount representing interest	56
Total obligations under operating leases	$	168

As of December 31, 2024, the following table represents operating lease maturities, including renewal provisions that Transco has assessed as being reasonably certain of exercise, for each of the years ended December 31:

	(Millions)
2025	$	9
2026	9
2027	10
2028	10
2029	10
Thereafter	32
Total future lease payments	80
Less: Amount representing interest	23
Total obligations under operating leases	$	57

As of December 31, 2024, the following table represents operating lease maturities, including renewal provisions that NWP has assessed as being reasonably certain of exercise, for each of the years ended December 31:

	(Millions)
2025	$	1
2026	—
2027	1
2028	—
2029	1
Thereafter	6
Total future lease payments	9
Less: Amount representing interest	3
Total obligations under operating leases	$	6