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v3.3.1.900

Report of Business Segments (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2015 | Sep. 30, 2015 | Jun. 30, 2015 | Mar. 31, 2015 | Dec. 31, 2014 | Sep. 30, 2014 | Jun. 30, 2014 | Mar. 31, 2014 | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Operating revenues | $ 447.1 | $ 719.8 | $ 549.9 | $ 480.1 | $ 526.2 | $ 754.7 | $ 611.8 | $ 560.4 | $ 2,196.9 |  | $ 2,453.1 | $ 2,867.7
Cost of sales |  |  |  |  |  |  |  |  | 865.0 |  | 1,106.6 | 1,428.9
Other operation and maintenance |  |  |  |  |  |  |  |  | 451.6 |  | 439.6 | 489.2
Depreciation and amortization |  |  |  |  |  |  |  |  | 307.9 |  | 281.4 | 297.3
Taxes other than income |  |  |  |  |  |  |  |  | 91.2 |  | 88.7 | 98.8
Operating income (loss) | 46.8 | 250.8 | 127.2 | 56.4 | 85.1 | 248.1 | 141.8 | 61.8 | 481.2 |  | 536.8 | 553.5
Equity in earnings of unconsolidated affiliates |  |  |  |  |  |  |  |  | 15.5 | [1] | 172.6 | 101.9
Other income (expense) |  |  |  |  |  |  |  |  | 21.0 |  | 7.6 | 16.2
Interest expense |  |  |  |  |  |  |  |  | 149.0 |  | 148.4 | 147.5
Income tax expense (benefit) |  |  |  |  |  |  |  |  | 97.4 |  | 172.8 | 130.3
NET INCOME | 29.4 | $ 111.2 | $ 87.5 | $ 43.2 | 58.4 | $ 187.3 | $ 100.8 | $ 49.3 | 271.3 |  | 395.8 | 393.8
Less: Net income attributable to noncontrolling interests |  |  |  |  |  |  |  |  | 0.0 |  | 0.0 | 6.2
NET INCOME ATTRIBUTABLE TO OGE ENERGY |  |  |  |  |  |  |  |  | 271.3 |  | 395.8 | 387.6
Investment in unconsolidated affiliates | 1,194.4 |  |  |  | 1,318.2 |  |  |  | 1,194.4 |  | 1,318.2 | 1,298.8
Total assets | 9,597.4 |  |  |  | 9,527.8 |  |  |  | 9,597.4 |  | 9,527.8 | 9,134.7
Capital expenditures |  |  |  |  |  |  |  |  | 547.8 |  | 569.3 | 990.6
Electric Utility [Member] |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Operating revenues |  |  |  |  |  |  |  |  | 2,196.9 |  | 2,453.1 | 2,262.2
Cost of sales |  |  |  |  |  |  |  |  | 865.0 |  | 1,106.6 | 965.9
Other operation and maintenance |  |  |  |  |  |  |  |  | 444.5 |  | 453.2 | 438.8
Depreciation and amortization |  |  |  |  |  |  |  |  | 299.9 |  | 270.8 | 248.4
Taxes other than income |  |  |  |  |  |  |  |  | 87.1 |  | 84.5 | 83.8
Operating income (loss) |  |  |  |  |  |  |  |  | 500.4 |  | 538.0 | 525.3
Equity in earnings of unconsolidated affiliates |  |  |  |  |  |  |  |  | 0.0 | [1] | 0.0 | 0.0
Other income (expense) |  |  |  |  |  |  |  |  | 20.0 |  | 7.1 | 10.1
Interest expense |  |  |  |  |  |  |  |  | 146.7 |  | 141.5 | 129.3
Income tax expense (benefit) |  |  |  |  |  |  |  |  | 104.8 |  | 111.6 | 113.5
NET INCOME |  |  |  |  |  |  |  |  | 268.9 |  | 292.0 | 292.6
Less: Net income attributable to noncontrolling interests |  |  |  |  |  |  |  |  |  |  |  | 0.0
NET INCOME ATTRIBUTABLE TO OGE ENERGY |  |  |  |  |  |  |  |  |  |  |  | 292.6
Investment in unconsolidated affiliates | 0.0 |  |  |  | 0.0 |  |  |  | 0.0 |  | 0.0 | 0.0
Total assets | 8,541.8 |  |  |  | 8,266.2 |  |  |  | 8,541.8 |  | 8,266.2 | 7,694.9
Capital expenditures |  |  |  |  |  |  |  |  | 551.6 |  | 565.4 | 797.6
Natural Gas Midstream Operations [Member] |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Operating revenues |  |  |  |  |  |  |  |  | 0.0 |  | 0.0 | 630.4
Cost of sales |  |  |  |  |  |  |  |  | 0.0 |  | 0.0 | 489.0
Other operation and maintenance |  |  |  |  |  |  |  |  | 7.5 |  | 1.2 | 60.9
Depreciation and amortization |  |  |  |  |  |  |  |  | 0.0 |  | 0.0 | 36.8
Taxes other than income |  |  |  |  |  |  |  |  | 0.0 |  | 0.0 | 10.5
Operating income (loss) |  |  |  |  |  |  |  |  | (7.5) |  | (1.2) | 33.2
Equity in earnings of unconsolidated affiliates |  |  |  |  |  |  |  |  | 15.5 | [1] | 172.6 | 101.9
Other income (expense) |  |  |  |  |  |  |  |  | 0.4 |  | 0.0 | 8.9
Interest expense |  |  |  |  |  |  |  |  | 0.0 |  | 0.0 | 10.6
Income tax expense (benefit) |  |  |  |  |  |  |  |  | (1.0) |  | 69.1 | 26.9
NET INCOME |  |  |  |  |  |  |  |  | 9.4 |  | 102.3 | 106.5
Less: Net income attributable to noncontrolling interests |  |  |  |  |  |  |  |  |  |  |  | 6.6
NET INCOME ATTRIBUTABLE TO OGE ENERGY |  |  |  |  |  |  |  |  |  |  |  | 99.9
Investment in unconsolidated affiliates | 1,194.4 |  |  |  | 1,318.2 |  |  |  | 1,194.4 |  | 1,318.2 | 1,298.8
Total assets | 1,439.5 |  |  |  | 1,461.2 |  |  |  | 1,439.5 |  | 1,461.2 | 1,348.6
Capital expenditures |  |  |  |  |  |  |  |  | 0.0 |  | 0.0 | 181.5
Other Operations [Member] |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Operating revenues |  |  |  |  |  |  |  |  | 0.0 |  | 0.0 | 0.0
Cost of sales |  |  |  |  |  |  |  |  | 0.0 |  | 0.0 | 0.0
Other operation and maintenance |  |  |  |  |  |  |  |  | (0.4) |  | (14.8) | (10.5)
Depreciation and amortization |  |  |  |  |  |  |  |  | 8.0 |  | 10.6 | 12.1
Taxes other than income |  |  |  |  |  |  |  |  | 4.1 |  | 4.2 | 4.5
Operating income (loss) |  |  |  |  |  |  |  |  | (11.7) |  | 0.0 | (6.1)
Equity in earnings of unconsolidated affiliates |  |  |  |  |  |  |  |  | 0.0 | [1] | 0.0 | 0.0
Other income (expense) |  |  |  |  |  |  |  |  | 0.9 |  | 0.7 | (2.3)
Interest expense |  |  |  |  |  |  |  |  | 2.6 |  | 7.1 | 8.1
Income tax expense (benefit) |  |  |  |  |  |  |  |  | (6.4) |  | (7.9) | (10.6)
NET INCOME |  |  |  |  |  |  |  |  | (7.0) |  | 1.5 | (5.9)
Less: Net income attributable to noncontrolling interests |  |  |  |  |  |  |  |  |  |  |  | 0.0
NET INCOME ATTRIBUTABLE TO OGE ENERGY |  |  |  |  |  |  |  |  |  |  |  | (5.9)
Investment in unconsolidated affiliates | 0.0 |  |  |  | 0.0 |  |  |  | 0.0 |  | 0.0 | 0.0
Total assets | 175.1 |  |  |  | 129.2 |  |  |  | 175.1 |  | 129.2 | 216.2
Capital expenditures |  |  |  |  |  |  |  |  | (3.8) |  | 10.8 | 11.5
Eliminations [Member] |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Operating revenues |  |  |  |  |  |  |  |  | 0.0 |  | 0.0 | (24.9)
Cost of sales |  |  |  |  |  |  |  |  | 0.0 |  | 0.0 | (26.0)
Other operation and maintenance |  |  |  |  |  |  |  |  | 0.0 |  | 0.0 | 0.0
Depreciation and amortization |  |  |  |  |  |  |  |  | 0.0 |  | 0.0 | 0.0
Taxes other than income |  |  |  |  |  |  |  |  | 0.0 |  | 0.0 | 0.0
Operating income (loss) |  |  |  |  |  |  |  |  | 0.0 |  | 0.0 | 1.1
Equity in earnings of unconsolidated affiliates |  |  |  |  |  |  |  |  | 0.0 | [1] | 0.0 | 0.0
Other income (expense) |  |  |  |  |  |  |  |  | (0.3) |  | (0.2) | (0.5)
Interest expense |  |  |  |  |  |  |  |  | (0.3) |  | (0.2) | (0.5)
Income tax expense (benefit) |  |  |  |  |  |  |  |  | 0.0 |  | 0.0 | 0.5
NET INCOME |  |  |  |  |  |  |  |  | 0.0 |  | 0.0 | 0.6
Less: Net income attributable to noncontrolling interests |  |  |  |  |  |  |  |  |  |  |  | (0.4)
NET INCOME ATTRIBUTABLE TO OGE ENERGY |  |  |  |  |  |  |  |  |  |  |  | 1.0
Investment in unconsolidated affiliates | 0.0 |  |  |  | 0.0 |  |  |  | 0.0 |  | 0.0 | 0.0
Total assets | $ (559.0) |  |  |  | $ (328.8) |  |  |  | (559.0) |  | (328.8) | (125.0)
Capital expenditures |  |  |  |  |  |  |  |  | 0.0 |  | $ (6.9) | $ 0.0
OGE Energy [Member] |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Goodwill, Impairment Loss |  |  |  |  |  |  |  |  | $ 108.4 |  |  |
[1] | In September 2015, the Company recorded a $108.4 million pre-tax charge for its share of the goodwill impairment, as adjusted for the basis difference. See Note 3 for further discussion of Enable's goodwill impairment.

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