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CONDENSED CONSOLIDATED INCOME STATEMENTS - USD ($)
shares in Millions, $ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2024
Jun. 30, 2023
Jun. 30, 2024
Jun. 30, 2023
Income Statement [Abstract]        
Operating revenues $ 1,772.0 $ 1,830.0 $ 4,452.2 $ 4,718.1 Close
Operating expenses        
Cost of sales 469.7 533.0 1,396.8 1,842.7
Other operation and maintenance 533.4 496.0 1,064.2 1,030.0
Depreciation and amortization 336.6 313.9 670.0 619.4
Property and revenue taxes 67.5 61.8 143.0 131.4
Total operating expenses 1,407.2 1,404.7 3,274.0 3,623.5 Close
Operating income 364.8 425.3 1,178.2 1,094.6 Close
Equity in earnings of transmission affiliates 46.8 43.6 91.6 87.4 Close
Other income, net 40.6 48.3 84.7 89.1 CloseClose
Interest expense 200.6 178.7 392.6 350.9 Close
Other expense (113.2) (86.8) (216.3) (174.4) Close
Total Other Income Expenses 174.8 183.8 352.6 353.0 0.0 Close
Income before income taxes 251.6 338.5 961.9 920.2 CloseClose
Income tax expense 41.6 48.5 129.3 122.6 Close
Net income 210.0 290.0 832.6 797.6 Close
Preferred stock dividends of subsidiary 0.3 0.3 0.6 0.6
Net loss attributed to noncontrolling interests 1.6 0.0 1.6 0.2
Net income attributed to common shareholders $ 211.3 $ 289.7 $ 833.6 $ 797.2
Earnings per share        
Basic (in dollars per share) $ 0.67 $ 0.92 $ 2.64 $ 2.53
Diluted (in dollars per share) $ 0.67 $ 0.92 $ 2.64 $ 2.52
Weighted average common shares outstanding        
Basic (in shares) 315.9 315.4 315.8 315.4
Diluted (in shares) 316.2 315.9 316.1 315.9