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v3.21.2

Condensed Consolidated Statements Of Income - USD ($) shares in Millions, $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020
Revenues: |  |  |  |
Electric utility | $ 939 | $ 852 | $ 2,357 | $ 2,257
Gas utility | 50 | 42 | 289 | 253
Other utility | 13 | 10 | 36 | 32
Non-utility | 22 | 16 | 60 | 57
Total revenues | 1,024 | 920 | 2,742 | 2,599
Operating expenses: |  |  |  |
Electric production fuel and purchased power | 207 | 179 | 478 | 527
Electric transmission service | 148 | 132 | 403 | 326
Cost of gas sold | 18 | 11 | 149 | 117
Other operation and maintenance | 171 | 143 | 477 | 465
Depreciation and amortization | 165 | 156 | 494 | 454
Taxes other than income taxes | 26 | 27 | 78 | 82
Total operating expenses | 735 | 648 | 2,079 | 1,971
Operating income | 289 | 272 | 663 | 628
Other (income) and deductions: |  |  |  |
Interest expense | 68 | 68 | 206 | 207
Equity income from unconsolidated investments, net | (13) | (15) | (47) | (46)
Allowance for funds used during construction | (7) | (13) | (16) | (51)
Other | 3 | 3 | 7 | 7
Total other (income) and deductions | 51 | 43 | 150 | 117
Income before income taxes | 238 | 229 | 513 | 511
Income tax benefit | (21) | (20) | (66) | (47)
Net income | 259 | 249 | 579 | 558
Preferred dividend requirements of Interstate Power and Light Company | 3 | 3 | 8 | 8
Net income attributable to common shareowners | $ 256 | $ 246 | $ 571 | $ 550
Weighted average number of common shares outstanding: |  |  |  |
Basic (in shares) | 250.3 | 249.7 | 250.2 | 247.9
Diluted (in shares) | 250.8 | 250.0 | 250.6 | 248.1
Earnings per weighted average common share attributable to Alliant Energy common shareowners: |  |  |  |
Basic (in dollars per share) | $ 1.02 | $ 0.99 | $ 2.28 | $ 2.22
Diluted (in dollars per share) | $ 1.02 | $ 0.98 | $ 2.28 | $ 2.22
IPL [Member] |  |  |  |
Revenues: |  |  |  |
Electric utility | $ 555 | $ 519 | $ 1,343 | $ 1,332
Gas utility | 31 | 24 | 165 | 141
Other utility | 13 | 10 | 35 | 31
Total revenues | 599 | 553 | 1,543 | 1,504
Operating expenses: |  |  |  |
Electric production fuel and purchased power | 101 | 102 | 215 | 304
Electric transmission service | 103 | 93 | 274 | 212
Cost of gas sold | 12 | 6 | 84 | 63
Other operation and maintenance | 95 | 85 | 253 | 269
Depreciation and amortization | 94 | 89 | 281 | 264
Taxes other than income taxes | 14 | 16 | 42 | 45
Total operating expenses | 419 | 391 | 1,149 | 1,157
Operating income | 180 | 162 | 394 | 347
Other (income) and deductions: |  |  |  |
Interest expense | 34 | 35 | 103 | 104
Allowance for funds used during construction | (2) | (6) | (7) | (21)
Other | 0 | 1 | 2 | 3
Total other (income) and deductions | 32 | 30 | 98 | 86
Income before income taxes | 148 | 132 | 296 | 261
Income tax benefit | (12) | (19) | (34) | (37)
Net income | 160 | 151 | 330 | 298
Preferred dividend requirements of Interstate Power and Light Company | 3 | 3 | 8 | 8
Net income attributable to common shareowners | 157 | 148 | 322 | 290
WPL [Member] |  |  |  |
Revenues: |  |  |  |
Electric utility | 384 | 333 | 1,014 | 925
Gas utility | 19 | 18 | 124 | 112
Other utility | 0 | 0 | 1 | 1
Total revenues | 403 | 351 | 1,139 | 1,038
Operating expenses: |  |  |  |
Electric production fuel and purchased power | 105 | 78 | 263 | 223
Electric transmission service | 44 | 39 | 128 | 114
Cost of gas sold | 6 | 4 | 65 | 53
Other operation and maintenance | 66 | 65 | 194 | 172
Depreciation and amortization | 70 | 65 | 209 | 186
Taxes other than income taxes | 12 | 11 | 35 | 35
Total operating expenses | 303 | 262 | 894 | 783
Operating income | 100 | 89 | 245 | 255
Other (income) and deductions: |  |  |  |
Interest expense | 25 | 26 | 77 | 78
Allowance for funds used during construction | (5) | (6) | (9) | (29)
Other | 2 | 1 | 3 | 3
Total other (income) and deductions | 22 | 21 | 71 | 52
Income before income taxes | 78 | 68 | 174 | 203
Income tax benefit | (15) | (5) | (41) | (17)
Net income | $ 93 | $ 73 | $ 215 | $ 220

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