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v3.22.4

Consolidated Income Statements - USD ($) shares in Millions, $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Income Statement [Abstract] |  |  |
Operating revenues | $ 9,597.4 | $ 8,316.0 | $ 7,241.7
Operating expenses |  |  |
Cost of sales | 4,358.9 | 3,311.0 | 2,319.5
Other operation and maintenance | 1,938.0 | 2,005.5 | 2,032.2
Depreciation and amortization | 1,122.6 | 1,074.3 | 975.9
Property and revenue taxes | 253.7 | 210.3 | 208.0
Total operating expenses | 7,673.2 | 6,601.1 | 5,535.6
Operating income | 1,924.2 | 1,714.9 | 1,706.1
Equity in earnings of transmission affiliates | 194.7 | 158.1 | 175.8
Other income, net | 128.8 | 133.2 | 79.5
Interest expense | 515.1 | 471.1 | 493.7
Loss on debt extinguishment | 0.0 | 36.3 | 38.4
Other expense | (191.6) | (216.1) | (276.8)
Income before income taxes | 1,732.6 | 1,498.8 | 1,429.3
Income tax expense | 322.9 | 200.3 | 227.9
Net income | 1,409.7 | 1,298.5 | 1,201.4
Preferred stock dividends of subsidiary | 1.2 | 1.2 | 1.2
Net (income) loss attributed to noncontrolling interests | (0.4) | 3.0 | (0.3)
Net income attributed to common shareholders | $ 1,408.1 | $ 1,300.3 | $ 1,199.9
Earnings per share |  |  |
Basic (in dollars per share) | $ 4.46 | $ 4.12 | $ 3.80
Diluted (in dollars per share) | $ 4.45 | $ 4.11 | $ 3.79
Weighted average common shares outstanding |  |  |
Basic (in shares) | 315.4 | 315.4 | 315.4
Diluted (in shares) | 316.1 | 316.3 | 316.5

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- Definition Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 10 -URI https://asc.fasb.org/extlink&oid=126958026&loc=d3e1448-109256 + Details
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- Definition Amount of income (loss) for our proportionate share of the income (loss) of our transmission affiliates accounted for under the equity method. + References No definition available. + Details
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- Definition Weighted Average Common Shares Outstanding (Millions). + References No definition available. + Details
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