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Income Taxes (Effective Income Tax Reconciliation) (Details) - project | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013 | Aug. 22, 2014 | Jun. 25, 2014
Effective Income Tax Rate Reconciliation, Amount [Abstract] |  |  |  |  |
Statutory Federal tax rate | 35.00% | 35.00% | 35.00% |  |
State taxes, net of Federal tax benefit | (5.00%) | (1.00%) | (3.00%) |  |
Taxes on foreign earnings | 3.00% | (14.00%) | (4.00%) |  |
Valuation allowance | (5.00%) | (1.00%) | 0.00% |  |
Uncertain tax positions | 0.00% | 0.00% | (5.00%) |  |
Bad debt deduction | 0.00% | 0.00% | (3.00%) |  |
Change in tax law | 0.00% | 4.00% | (1.00%) |  |
Goodwill impairment | 10.00% | 4.00% | 12.00% |  |
Other—net | 3.00% | 0.00% | 2.00% |  |
Effective tax rate | 41.00% | 27.00% | 33.00% |  |
Masinloc Subsidiary |  |  |  |  |
Effective Income Tax Rate Reconciliation, Amount [Abstract] |  |  |  |  |
Component of taxes on foreign earnings | (8.00%) |  |  |  |
Investment In Affiliate Ownership Percentage Sold |  |  |  |  | 45.00%
UK Wind Projects |  |  |  |  |
Effective Income Tax Rate Reconciliation, Amount [Abstract] |  |  |  |  |
Number of U.K. Wind Projects Sold |  |  |  | 4 |

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- Definition The portion of the difference between the effective income tax rate and domestic federal statutory income tax rate attributable to DPL goodwill impairment + References No definition available. + Details
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- Definition The portion of the difference between the effective income tax rate and domestic federal statutory income tax rate attributable to withholding tax reversals. + References No definition available. + Details
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