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Commitments and Contingencies (Environmental Matters and Other) (Details) - USD ($) | Apr. 01, 2016 | Mar. 31, 2016
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Other - Nuclear Insurance (Numeric) [Abstract] |  |
Maximum public liability for claims resulting an incident at nuclear station |  | $ 13,400,000,000
Maximum amount that could be assessed resulting from an incident at nuclear station |  | 255,000,000
Maximum amount payable per year resulting from an incident at nuclear station |  | 38,000,000
Maximum amount of insured property damage losses at nuclear station |  | 2,000,000,000
Maximum assessment for retroactive premiums for nuclear outage insurance coverage |  | $ 55,000,000
Subsequent Event |  |
Other - Nuclear Insurance (Numeric) [Abstract] |  |
Maximum assessment for retroactive premiums for nuclear outage insurance coverage | $ 61,000,000 |

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- Definition The company's maximum amount that could be assessed resulting from an incident at its nuclear station covered by Price-Anderson Act Amendments under the Energy Policy Act of 2005. + References No definition available. + Details
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- Definition The company's maximum public liability for claims resulting from an incident at its nuclear station covered by Provisions of The Price-Anderson Act Amendments under the Energy Policy Act of 2005. + References No definition available. + Details
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- Definition Maximum property insurance coverage for the company's nuclear station. + References No definition available. + Details
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- Definition Maximum amount payable per year that company would have to pay resulting from an incident at its nuclear station covered by the Price-Anderson Act Amendments under the Energy Policy Act of 2005. + References No definition available. + Details
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- Definition Maximum assessment of retroactive premiums the company could be assessed in the event of insurers' loss under property and replacement power insurance programs for coverage for the cost of replacement power during prolonged outages of nuclear units under certain specified conditions. + References No definition available. + Details
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- Details
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