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CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Millions, $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Revenues from contracts with customers | $ 2,607.3 | $ 3,304.2 | $ 3,588.7
Other revenues | 67.0 | 71.5 | 65.0
Operating revenues | 2,674.3 | 3,375.7 | 3,653.7
FUEL, PURCHASED POWER AND DIRECT TRANSMISSION EXPENSE | 911.7 | 1,662.4 | 2,127.6
OPERATING EXPENSES |  |  |
Other operation and maintenance | 502.6 | 501.4 | 463.1
Depreciation and amortization | 506.6 | 460.9 | 416.0
Taxes other than income | 103.2 | 101.5 | 102.8
Operating expenses | 1,112.4 | 1,063.8 | 981.9
OPERATING INCOME | 650.2 | 649.5 | 544.2
OTHER INCOME (EXPENSE) |  |  |
Allowance for equity funds used during construction | 19.4 | 6.9 | 6.7
Other net periodic benefit income (expense) | 5.6 | (12.9) | (6.1)
Gain (loss) on equity securities (Note 1) | 0.0 | 282.1 | (8.6)
Equity in earnings of unconsolidated affiliates | 0.0 | 0.0 | 169.8
Gain on Enable/Energy Transfer transaction, net | 0.0 | 0.0 | 344.4
Other income | 48.2 | 74.6 | 26.3
Other expense | (29.0) | (44.6) | (39.9)
Net other income | 44.2 | 306.1 | 492.6
INTEREST EXPENSE |  |  |
Interest on long-term debt | 205.0 | 162.1 | 154.8
Allowance for borrowed funds used during construction | (7.1) | (4.0) | (3.5)
Interest on short-term debt and other interest charges | 23.5 | 8.2 | 7.0
Interest expense | 221.4 | 166.3 | 158.3
INCOME BEFORE TAXES | 473.0 | 789.3 | 878.5
INCOME TAX EXPENSE | 56.2 | 123.6 | 141.2
NET INCOME | $ 416.8 | $ 665.7 | $ 737.3
BASIC AVERAGE COMMON SHARES OUTSTANDING | 200.3 | 200.2 | 200.1
DILUTED AVERAGE COMMON SHARES OUTSTANDING | 200.9 | 200.8 | 200.3
BASIC EARNINGS PER AVERAGE COMMON SHARE | $ 2.08 | $ 3.33 | $ 3.68
DILUTED EARNINGS PER AVERAGE COMMON SHARE | $ 2.07 | $ 3.32 | $ 3.68
Other comprehensive income, net of tax | $ 4.7 | $ 12.9 | $ 7.3
Comprehensive income | 421.5 | 678.6 | 744.6
OG&E [Member] |  |  |
Revenues from contracts with customers | 2,607.3 | 3,304.2 | 3,558.7
Other revenues | 67.0 | 71.5 | 65.0
Operating revenues | 2,674.3 | 3,375.7 | 3,653.7
FUEL, PURCHASED POWER AND DIRECT TRANSMISSION EXPENSE | 911.7 | 1,662.4 | 2,127.6
OPERATING EXPENSES |  |  |
Other operation and maintenance | 505.0 | 491.9 | 464.7
Depreciation and amortization | 506.6 | 460.9 | 416.0
Taxes other than income | 99.4 | 98.0 | 99.3
Operating expenses | 1,111.0 | 1,050.8 | 980.0
OPERATING INCOME | 651.6 | 662.5 | 546.1
OTHER INCOME (EXPENSE) |  |  |
Allowance for equity funds used during construction | 19.4 | 6.9 | 6.7
Other net periodic benefit income (expense) | 6.5 | 1.2 | (4.3)
Other income | 23.9 | 6.5 | 7.1
Other expense | (6.3) | (3.4) | (1.8)
Net other income | 43.5 | 11.2 | 7.7
INTEREST EXPENSE |  |  |
Interest on long-term debt | 200.4 | 157.4 | 152.7
Allowance for borrowed funds used during construction | (7.1) | (4.0) | (3.5)
Interest on short-term debt and other interest charges | 6.6 | 4.4 | 2.8
Interest expense | 199.9 | 157.8 | 152.0
INCOME BEFORE TAXES | 495.2 | 515.9 | 401.8
INCOME TAX EXPENSE | 68.8 | 76.4 | 41.8
NET INCOME | 426.4 | 439.5 | 360.0
Other comprehensive income, net of tax | 0.0 | 0.0 | 0.0
Comprehensive income | $ 426.4 | $ 439.5 | $ 360.0

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