v3.25.2
DEI 8-K Notes
Aug. 05, 2025
Document Information [Line Items]  
Document Type 8-K
Document Period End Date Aug. 05, 2025
Entity Registrant Name ONE Gas, Inc.
Entity Central Index Key 0001587732
Title of 12(b) Security Common Stock, par value $0.01 per share
Entity Incorporation, State or Country Code OK
Entity File Number 001-36108
Entity Tax Identification Number 46-3561936
Entity Address, Postal Zip Code 74103
City Area Code (918)
Local Phone Number 947-7000
Trading Symbol OGS
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
Amendment Flag false
Entity Address, Address Line One 15 East Fifth Street
Entity Address, City or Town Tulsa
Entity Address, State or Province OK