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v3.20.2

Condensed Consolidated Statements Of Income - USD ($) shares in Millions, $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019
Revenues: |  |  |  |
Electric utility | $ 852 | $ 916 | $ 2,257 | $ 2,350
Gas utility | 42 | 42 | 253 | 323
Other utility | 10 | 11 | 32 | 33
Non-utility | 16 | 21 | 57 | 62
Total revenues | 920 | 990 | 2,599 | 2,768
Operating expenses: |  |  |  |
Electric production fuel and purchased power | 179 | 219 | 527 | 602
Electric transmission service | 132 | 127 | 326 | 363
Cost of gas sold | 11 | 9 | 117 | 151
Other operation and maintenance | 143 | 174 | 465 | 527
Depreciation and amortization | 156 | 144 | 454 | 424
Taxes other than income taxes | 27 | 27 | 82 | 84
Total operating expenses | 648 | 700 | 1,971 | 2,151
Operating income | 272 | 290 | 628 | 617
Other (income) and deductions: |  |  |  |
Interest expense | 68 | 68 | 207 | 204
Equity income from unconsolidated investments, net | (15) | (12) | (46) | (35)
Allowance for funds used during construction | (13) | (22) | (51) | (66)
Other | 3 | 4 | 7 | 11
Total other (income) and deductions | 43 | 38 | 117 | 114
Income before income taxes | 229 | 252 | 511 | 503
Income tax expense (benefit) | (20) | 23 | (47) | 49
Net income | 249 | 229 | 558 | 454
Preferred dividend requirements of Interstate Power and Light Company | 3 | 3 | 8 | 8
Net income attributable to common shareowners | $ 246 | $ 226 | $ 550 | $ 446
Weighted average number of common shares outstanding: |  |  |  |
Basic (in shares) | 249.7 | 239.1 | 247.9 | 237.7
Diluted (in shares) | 250.0 | 239.9 | 248.1 | 238.2
Earnings per weighted average common share attributable to Alliant Energy common shareowners: |  |  |  |
Basic (in dollars per share) | $ 0.99 | $ 0.95 | $ 2.22 | $ 1.88
Diluted (in dollars per share) | $ 0.98 | $ 0.94 | $ 2.22 | $ 1.87
IPL [Member] |  |  |  |
Revenues: |  |  |  |
Electric utility | $ 519 | $ 561 | $ 1,332 | $ 1,373
Gas utility | 24 | 25 | 141 | 188
Other utility | 10 | 11 | 31 | 32
Total revenues | 553 | 597 | 1,504 | 1,593
Operating expenses: |  |  |  |
Electric production fuel and purchased power | 102 | 127 | 304 | 339
Electric transmission service | 93 | 92 | 212 | 257
Cost of gas sold | 6 | 6 | 63 | 80
Other operation and maintenance | 85 | 100 | 269 | 306
Depreciation and amortization | 89 | 84 | 264 | 243
Taxes other than income taxes | 16 | 14 | 45 | 46
Total operating expenses | 391 | 423 | 1,157 | 1,271
Operating income | 162 | 174 | 347 | 322
Other (income) and deductions: |  |  |  |
Interest expense | 35 | 32 | 104 | 93
Allowance for funds used during construction | (6) | (11) | (21) | (34)
Other | 1 | 2 | 3 | 5
Total other (income) and deductions | 30 | 23 | 86 | 64
Income before income taxes | 132 | 151 | 261 | 258
Income tax expense (benefit) | (19) | 7 | (37) | 11
Net income | 151 | 144 | 298 | 247
Preferred dividend requirements of Interstate Power and Light Company | 3 | 3 | 8 | 8
Net income attributable to common shareowners | 148 | 141 | 290 | 239
WPL [Member] |  |  |  |
Revenues: |  |  |  |
Electric utility | 333 | 355 | 925 | 977
Gas utility | 18 | 17 | 112 | 135
Other utility | 0 | 0 | 1 | 1
Total revenues | 351 | 372 | 1,038 | 1,113
Operating expenses: |  |  |  |
Electric production fuel and purchased power | 78 | 92 | 223 | 263
Electric transmission service | 39 | 36 | 114 | 106
Cost of gas sold | 4 | 3 | 53 | 71
Other operation and maintenance | 65 | 62 | 172 | 188
Depreciation and amortization | 65 | 59 | 186 | 177
Taxes other than income taxes | 11 | 12 | 35 | 35
Total operating expenses | 262 | 264 | 783 | 840
Operating income | 89 | 108 | 255 | 273
Other (income) and deductions: |  |  |  |
Interest expense | 26 | 25 | 78 | 77
Allowance for funds used during construction | (6) | (11) | (29) | (31)
Other | 1 | 1 | 3 | 4
Total other (income) and deductions | 21 | 15 | 52 | 50
Income before income taxes | 68 | 93 | 203 | 223
Income tax expense (benefit) | (5) | 17 | (17) | 40
Net income | $ 73 | $ 76 | $ 220 | $ 183

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