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v3.22.4

Consolidated Statements Of Income - USD ($) shares in Millions, $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Revenues: |  |  |
Electric utility | $ 3,421 | $ 3,081 | $ 2,920
Gas utility | 642 | 456 | 373
Other utility | 49 | 49 | 49
Non-utility | 93 | 83 | 74
Total revenues | 4,205 | 3,669 | 3,416
Operating expenses: |  |  |
Electric production fuel and purchased power | 830 | 642 | 652
Electric transmission service | 573 | 537 | 449
Cost of gas sold | 389 | 258 | 182
Other operation and maintenance | 704 | 676 | 670
Depreciation and amortization | 671 | 657 | 615
Taxes other than income taxes | 110 | 104 | 108
Total operating expenses | 3,277 | 2,874 | 2,676
Operating income (loss) | 928 | 795 | 740
Other (income) and deductions: |  |  |
Interest expense | 325 | 277 | 275
Equity income from unconsolidated investments, net | (51) | (62) | (61)
Allowance for funds used during construction | (60) | (25) | (55)
Other | 6 | 5 | 14
Total other (income) and deductions | 220 | 195 | 173
Income before income taxes | 708 | 600 | 567
Income tax expense (benefit) | 22 | (74) | (57)
Net income | 686 | 674 | 624
Preferred dividend requirements of Interstate Power and Light Company | 0 | 15 | 10
Net income attributable to common shareowners | $ 686 | $ 659 | $ 614
Weighted average number of common shares outstanding: |  |  |
Basic (in shares) | 250.9 | 250.2 | 248.4
Diluted (in shares) | 251.2 | 250.7 | 248.7
Earnings per weighted average common share attributable to Alliant Energy common shareowners: |  |  |
Basic (in dollars per share) | $ 2.73 | $ 2.63 | $ 2.47
Diluted (in dollars per share) | $ 2.73 | $ 2.63 | $ 2.47
IPL [Member] |  |  |
Revenues: |  |  |
Electric utility | $ 1,859 | $ 1,752 | $ 1,695
Gas utility | 351 | 265 | 208
Other utility | 46 | 46 | 44
Total revenues | 2,256 | 2,063 | 1,947
Operating expenses: |  |  |
Electric production fuel and purchased power | 383 | 295 | 352
Electric transmission service | 407 | 367 | 298
Cost of gas sold | 206 | 149 | 99
Other operation and maintenance | 369 | 362 | 375
Depreciation and amortization | 381 | 375 | 356
Taxes other than income taxes | 57 | 55 | 57
Total operating expenses | 1,803 | 1,603 | 1,537
Operating income (loss) | 453 | 460 | 410
Other (income) and deductions: |  |  |
Interest expense | 148 | 139 | 139
Allowance for funds used during construction | (11) | (9) | (24)
Other | 6 | 1 | 8
Total other (income) and deductions | 143 | 131 | 123
Income before income taxes | 310 | 329 | 287
Income tax expense (benefit) | (50) | (36) | (47)
Net income | 360 | 365 | 334
Preferred dividend requirements of Interstate Power and Light Company | 0 | 15 | 10
Net income attributable to common shareowners | 360 | 350 | 324
WPL [Member] |  |  |
Revenues: |  |  |
Electric utility | 1,562 | 1,329 | 1,225
Gas utility | 291 | 191 | 165
Other utility | 3 | 3 | 5
Total revenues | 1,856 | 1,523 | 1,395
Operating expenses: |  |  |
Electric production fuel and purchased power | 447 | 347 | 300
Electric transmission service | 166 | 170 | 151
Cost of gas sold | 183 | 109 | 83
Other operation and maintenance | 278 | 268 | 254
Depreciation and amortization | 283 | 276 | 254
Taxes other than income taxes | 47 | 45 | 47
Total operating expenses | 1,404 | 1,215 | 1,089
Operating income (loss) | 452 | 308 | 306
Other (income) and deductions: |  |  |
Interest expense | 121 | 105 | 104
Allowance for funds used during construction | (49) | (16) | (31)
Other | (1) | 2 | 3
Total other (income) and deductions | 71 | 91 | 76
Income before income taxes | 381 | 217 | 230
Income tax expense (benefit) | 66 | (51) | (19)
Net income | $ 315 | $ 268 | $ 249

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