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v3.22.1

Report of Business Segments (Details) - USD ($) $ in Millions | 3 Months Ended |
--- | --- | ---
Mar. 31, 2022 | Mar. 31, 2021 | Dec. 31, 2021
Segment Reporting Information [Line Items] |  |  |
Operating revenues | $ 589.3 | $ 1,630.6 |
Fuel, purchased power and direct transmission expense | 255.7 | 1,346.8 |
Other operation and maintenance | 115.0 | 109.3 |
Depreciation and amortization | 107.4 | 98.7 |
Taxes other than income | 28.1 | 27.2 |
OPERATING INCOME | 83.1 | 48.6 |
Equity in earnings of unconsolidated affiliates | 0.0 | 53.2 |
Other income (expense) | 9.3 | 0.9 |
Interest expense | 40.1 | 39.4 |
Income tax expense (benefit) | 55.1 | 10.6 |
Net income (loss) | 279.5 | 52.7 |
Investment in unconsolidated affiliates |  | 409.2 |
Total assets | 13,093.6 | 11,788.7 | $ 12,606.4
Gain (Loss) on Disposition of Assets |  | 53.2 |
Equity Securities, FV-NI, Gain (Loss) | 282.3 | 0.0 |
Electric Utility [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Operating revenues | 589.3 | 1,630.6 |
Fuel, purchased power and direct transmission expense | 255.7 | 1,346.8 |
Other operation and maintenance | 115.5 | 110.3 |
Depreciation and amortization | 107.4 | 98.7 |
Taxes other than income | 26.8 | 25.7 |
OPERATING INCOME | 83.9 | 49.1 |
Equity in earnings of unconsolidated affiliates |  | 0.0 |
Other income (expense) | 0.7 | 1.7 |
Interest expense | 38.2 | 38.4 |
Income tax expense (benefit) | 7.4 | 1.2 |
Net income (loss) | 39.0 | 11.2 |
Investment in unconsolidated affiliates |  | 0.0 |
Total assets | 11,898.8 | 11,248.2 |
Equity Securities, FV-NI, Gain (Loss) | 0.0 |  |
Natural Gas Midstream Operations [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Operating revenues | 0.0 | 0.0 |
Fuel, purchased power and direct transmission expense | 0.0 | 0.0 |
Other operation and maintenance | 0.7 | 0.4 |
Depreciation and amortization | 0.0 | 0.0 |
Taxes other than income | 0.0 | 0.1 |
OPERATING INCOME | (0.7) | (0.5) |
Equity in earnings of unconsolidated affiliates |  | 53.2 |
Other income (expense) | 8.7 | (0.5) |
Interest expense | 0.0 | 0.0 |
Income tax expense (benefit) | 60.2 | 14.3 |
Net income (loss) | 230.1 | 37.9 |
Investment in unconsolidated affiliates |  | 409.2 |
Total assets | 1,068.8 | 415.4 |
Equity Securities, FV-NI, Gain (Loss) | 282.3 |  |
Other Operations [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Operating revenues | 0.0 | 0.0 |
Fuel, purchased power and direct transmission expense | 0.0 | 0.0 |
Other operation and maintenance | (1.2) | (1.4) |
Depreciation and amortization | 0.0 | 0.0 |
Taxes other than income | 1.3 | 1.4 |
OPERATING INCOME | (0.1) | 0.0 |
Equity in earnings of unconsolidated affiliates |  | 0.0 |
Other income (expense) | 0.0 | (0.1) |
Interest expense | 2.0 | 1.2 |
Income tax expense (benefit) | (12.5) | (4.9) |
Net income (loss) | 10.4 | 3.6 |
Investment in unconsolidated affiliates |  | 0.0 |
Total assets | 320.9 | 521.6 |
Equity Securities, FV-NI, Gain (Loss) | 0.0 |  |
Eliminations [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Operating revenues | 0.0 | 0.0 |
Fuel, purchased power and direct transmission expense | 0.0 | 0.0 |
Other operation and maintenance | 0.0 | 0.0 |
Depreciation and amortization | 0.0 | 0.0 |
Taxes other than income | 0.0 | 0.0 |
OPERATING INCOME | 0.0 | 0.0 |
Equity in earnings of unconsolidated affiliates |  | 0.0 |
Other income (expense) | (0.1) | (0.2) |
Interest expense | (0.1) | (0.2) |
Income tax expense (benefit) | 0.0 | 0.0 |
Net income (loss) | 0.0 | 0.0 |
Investment in unconsolidated affiliates |  | 0.0 |
Total assets | (194.9) | $ (396.5) |
Equity Securities, FV-NI, Gain (Loss) | $ 0.0 |  |

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