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Cover Page
Dec. 01, 2025
Entity Information [Line Items]  
Document Type 8-K
Document Period End Date Dec. 01, 2025
Entity Registrant Name Williams Companies, Inc.
Entity Incorporation, State or Country Code DE
Entity File Number 001-04174
Entity Tax Identification Number 73-0569878
Entity Address, Address Line One One Williams Center
Entity Address, City or Town Tulsa
Entity Address, State or Province OK
Entity Address, Postal Zip Code 74172
City Area Code 800
Local Phone Number 945-5426
Title of 12(b) Security Common Stock, $1.00 par value
Trading Symbol WMB
Security Exchange Name NYSE
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Entity Emerging Growth Company false
Entity Central Index Key 0000107263
Amendment Flag false
Northwest Pipeline LLC [Member]  
Entity Information [Line Items]  
Entity Registrant Name Northwest Pipeline LLC
Entity Incorporation, State or Country Code DE
Entity File Number 001-07414
Entity Tax Identification Number 26-1157701
Entity Address, Address Line One One Williams Center
Entity Address, City or Town Tulsa
Entity Address, State or Province OK
Entity Address, Postal Zip Code 74172
City Area Code 800
Local Phone Number 945-5426
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Entity Emerging Growth Company false
Entity Central Index Key 0000099250