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CONSOLIDATED STATEMENTS OF INCOME - USD ($)
shares in Millions, $ in Millions
 3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Revenues    
Total revenues (Note K) $ 8,043 $ 4,781
Cost of sales and fuel (exclusive of items shown separately below) 5,655 2,897
Operations and maintenance 655 483
Depreciation and amortization 380 254
General taxes 97 86
Transaction costs (Note B) 42 3
Other operating income, net (6) (6)
Operating income 1,220 1,064
Equity in net earnings from investments (Note I) 108 76
Other income, net 2 7
Interest expense (net of capitalized interest of $10 and $12, respectively) (442) (300)
Income before income taxes 888 847
Income taxes (197) (208)
Net income 691 639
Less: Net income attributable to noncontrolling interests (55) 0
Net income attributable to ONEOK 636 639
Less: Preferred stock dividends 0 0
Net income available to common shareholders $ 636 $ 639
Basic EPS (Note H) (in dollars per share) $ 1.04 $ 1.09
Diluted EPS (Note H) (in dollars per share) $ 1.04 $ 1.09
Average shares (millions)    
Basic (in shares) 611.4 584.2
Diluted (in shares) 612.5 585.7
Commodity sales    
Revenues    
Total revenues (Note K) $ 6,912 $ 3,928
Services and other    
Revenues    
Total revenues (Note K) $ 1,131 $ 853