Audit Information	12 Months Ended
	Dec. 31, 2024
Auditor [Line Items]
Auditor Name	Ernst & Young LLP
Auditor Location	Tulsa, Oklahoma
Auditor Firm ID	42
Transcontinental Gas Pipe Line Company, LLC [Member]
Auditor [Line Items]
Auditor Name	Ernst & Young LLP
Auditor Location	Houston, Texas
Auditor Firm ID	42
Northwest Pipeline LLC [Member]
Auditor [Line Items]
Auditor Name	Ernst & Young LLP
Auditor Location	Houston, Texas
Auditor Firm ID	42