XML 44 R1.htm IDEA: XBRL DOCUMENT v3.25.1
Cover Page - shares
 3 Months Ended
Mar. 31, 2025
Apr. 21, 2025
Cover [Abstract]    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Mar. 31, 2025  
Document Transition Report false  
Entity File Number 001-13643  
Entity Registrant Name ONEOK, Inc.  
Entity Incorporation, State or Country Code OK  
Entity Tax Identification Number 73-1520922  
Entity Address, Address Line One 100 West Fifth Street,  
Entity Address, City or Town Tulsa,  
Entity Address, State or Province OK  
Entity Address, Postal Zip Code 74103  
City Area Code 918  
Local Phone Number 588-7000  
Title of 12(b) Security Common stock, par value of $0.01  
Trading Symbol OKE  
Security Exchange Name NYSE  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Large Accelerated Filer  
Entity Small Business false  
Entity Emerging Growth Company false  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   624,632,479
Entity Central Index Key 0001039684  
Current Fiscal Year End Date --12-31  
Document Fiscal Year Focus 2025  
Document Fiscal Period Focus Q1  
Amendment Flag false