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v3.10.0.1

Selected Consolidated Quarterly Financial Data (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2018 | Sep. 30, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2017 | Sep. 30, 2017 | Jun. 30, 2017 | Mar. 31, 2017 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Revenues | $ 873.5 | $ 928.6 | $ 816.1 | $ 916.3 | $ 856.1 | $ 906.9 | $ 765.3 | $ 853.9 | $ 3,534.5 | $ 3,382.2 | $ 3,320.0
Operating income | 121.4 | 256.1 | 151.2 | 165.7 | 134.0 | 236.3 | 153.7 | 147.2 | 694.4 | 671.2 | 554.1
Income from continuing operations, net of tax | 85.3 | 205.5 | 100.4 | 120.9 | 93.8 | 168.8 | 94.3 | 99.0 | 512.1 | 455.9 | 373.8
Income (loss) from discontinued operations, net of tax | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 1.4 | 0.0 | 1.4 | (2.3)
Net income |  |  |  |  |  |  |  |  | 522.3 | 467.5 | 381.7
Net income attributable to common shareowners | $ 85.3 | $ 205.5 | $ 100.4 | $ 120.9 | $ 93.8 | $ 168.8 | $ 94.3 | $ 100.4 | 512.1 | 457.3 | 371.5
Income from continuing operations, net of tax (in dollars per share) | $ 0.36 | $ 0.87 | $ 0.43 | $ 0.52 | $ 0.41 | $ 0.73 | $ 0.41 | $ 0.43 |  |  |
Income from discontinued operations, net of tax (in dollars per share) | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.01 |  |  |
Net income (in dollars per share) | $ 0.36 | $ 0.87 | $ 0.43 | $ 0.52 | $ 0.41 | $ 0.73 | $ 0.41 | $ 0.44 |  |  |
IPL [Member] |  |  |  |  |  |  |  |  |  |  |
Revenues | $ 494.1 | $ 547.6 | $ 474.8 | $ 525.8 | $ 472.2 | $ 527.4 | $ 420.2 | $ 450.5 | 2,042.3 | 1,870.3 | 1,820.4
Operating income | 54.4 | 143.1 | 77.7 | 75.6 | 50.9 | 133.8 | 68.1 | 51.3 | 350.8 | 304.1 | 277.6
Net income | 41.6 | 129.1 | 54.2 | 49.3 | 18.9 | 123.0 | 45.3 | 39.8 | 274.2 | 227.0 | 225.8
Net income attributable to common shareowners | 39.1 | 126.5 | 51.7 | 46.7 | 16.4 | 120.4 | 42.8 | 37.2 | 264.0 | 216.8 | 215.6
WPL [Member] |  |  |  |  |  |  |  |  |  |  |
Revenues | 369.4 | 370.7 | 330.8 | 381.7 | 374.7 | 370.2 | 334.8 | 393.1 | 1,452.6 | 1,472.8 | 1,459.1
Operating income | 61.3 | 104.2 | 63.4 | 84.0 | 75.4 | 93.5 | 76.2 | 88.6 | 312.9 | 333.7 | 337.2
Net income | 38.0 | 76.3 | 39.8 | 54.0 | 53.2 | 49.8 | 38.1 | 45.5 | 208.1 | 186.6 | 192.8
Net income attributable to common shareowners | $ 38.0 | $ 76.3 | $ 39.8 | $ 54.0 | $ 53.2 | $ 49.8 | $ 38.1 | $ 45.5 | $ 208.1 | $ 186.6 | $ 190.4

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