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v3.21.1

Report of Business Segments (Details) - USD ($) $ in Millions | 3 Months Ended |
--- | --- | ---
Mar. 31, 2021 | Mar. 31, 2020 | Dec. 31, 2020
Segment Reporting Information [Line Items] |  |  |  |
Operating revenues | $ 1,630.6 | $ 431.3 |  |
Cost of sales | 1,346.8 | 135.0 |  |
Other operation and maintenance | 109.3 | 120.0 |  |
Depreciation and amortization | 98.7 | 94.4 |  |
Taxes other than income | 27.2 | 25.6 |  |
OPERATING INCOME | 48.6 | 56.3 |  |
Equity in earnings of unconsolidated affiliates | 53.2 | (746.5) | [1] |
Other Nonoperating Income (Expense) | 0.9 | 2.1 |  |
Interest expense | 39.4 | 38.3 |  |
Income Tax Expense (Benefit) | 10.6 | (234.6) |  |
Net income (loss) | 52.7 | (491.8) |  |
Investment in unconsolidated affiliates | 432.8 | 367.5 |  | $ 397.4
Total assets | 11,788.7 | 10,370.9 |  | $ 10,718.8
Electric Utility [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Operating revenues | 1,630.6 | 431.3 |  |
Cost of sales | 1,346.8 | 135.0 |  |
Other operation and maintenance | 110.3 | 121.0 |  |
Depreciation and amortization | 98.7 | 94.4 |  |
Taxes other than income | 25.7 | 23.9 |  |
OPERATING INCOME | 49.1 | 57.0 |  |
Equity in earnings of unconsolidated affiliates | 0.0 | 0.0 | [1] |
Other Nonoperating Income (Expense) | 1.7 | 1.8 |  |
Interest expense | 38.4 | 36.9 |  |
Income Tax Expense (Benefit) | 1.2 | 2.0 |  |
Net income (loss) | 11.2 | 19.9 |  |
Investment in unconsolidated affiliates | 0.0 | 0.0 |  |
Total assets | 11,248.2 | 10,030.7 |  |
Natural Gas Midstream Operations [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Operating revenues | 0.0 | 0.0 |  |
Cost of sales | 0.0 | 0.0 |  |
Other operation and maintenance | 0.4 | 0.6 |  |
Depreciation and amortization | 0.0 | 0.0 |  |
Taxes other than income | 0.1 | 0.1 |  |
OPERATING INCOME | (0.5) | (0.7) |  |
Equity in earnings of unconsolidated affiliates | 53.2 | (746.5) | [1] |
Other Nonoperating Income (Expense) | (0.5) | 0.0 |  |
Interest expense | 0.0 | 0.0 |  |
Income Tax Expense (Benefit) | 14.3 | (179.2) |  |
Net income (loss) | 37.9 | (568.0) |  |
Investment in unconsolidated affiliates | 409.2 | 348.0 |  |
Total assets | 415.4 | 353.4 |  |
Other Operations [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Operating revenues | 0.0 | 0.0 |  |
Cost of sales | 0.0 | 0.0 |  |
Other operation and maintenance | (1.4) | (1.6) |  |
Depreciation and amortization | 0.0 | 0.0 |  |
Taxes other than income | 1.4 | 1.6 |  |
OPERATING INCOME | 0.0 | 0.0 |  |
Equity in earnings of unconsolidated affiliates | 0.0 | 0.0 | [1] |
Other Nonoperating Income (Expense) | (0.1) | 1.3 |  |
Interest expense | 1.2 | 2.4 |  |
Income Tax Expense (Benefit) | (4.9) | (57.4) |  |
Net income (loss) | 3.6 | 56.3 |  |
Investment in unconsolidated affiliates | 23.6 | 19.5 |  |
Total assets | 521.6 | 252.9 |  |
Eliminations [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Operating revenues | 0.0 | 0.0 |  |
Cost of sales | 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 | 0.0 | [1] |
Other Nonoperating Income (Expense) | (0.2) | (1.0) |  |
Interest expense | (0.2) | (1.0) |  |
Income Tax Expense (Benefit) | 0.0 | 0.0 |  |
Net income (loss) | 0.0 | 0.0 |  |
Investment in unconsolidated affiliates | 0.0 | 0.0 |  |
Total assets | $ (396.5) | $ (266.1) |  |
[1] | In 2020, OGE Energy recorded a $780.0 million impairment on its investment in Enable, as further discussed in Note 4

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