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Commitments and Contingencies - Palo Verde Nuclear Generating Station and Contractual Obligations (Details) |  | 3 Months Ended |
--- | --- | --- | ---
Aug. 18, 2014 USD ($) | Mar. 31, 2016 USD ($) time_period power_plant claim | Dec. 31, 1986 Trust
Breach of Contract for Disposal of Spent Nuclear Fuel and/or High Level Radioactive Waste |  |  |
Commitments and Contingencies |  |  |
Litigation settlement amount | $ 57,400,000 |  |
Proceeds from legal settlements |  | $ 53,900,000 |
Arizona Public Service Company |  |  |
Commitments and Contingencies |  |  |
Maximum insurance against public liability per occurrence for a nuclear incident (up to) |  | 13,500,000,000 |
Maximum available nuclear liability insurance (up to) |  | 375,000,000 |
Remaining nuclear liability insurance through mandatory industry wide retrospective assessment program |  | 13,100,000,000 |
Maximum retrospective premium assessment per reactor for each nuclear liability incident |  | 127,300,000 |
Annual limit per incident with respect to maximum retrospective premium assessment |  | $ 19,000,000 |
Number of VIE lessor trusts |  | 3 | 3
Maximum potential retrospective assessment per incident of APS |  | $ 111,000,000 |
Annual payment limitation with respect to maximum potential retrospective premium assessment |  | 16,600,000 |
Amount of "all risk" (including nuclear hazards) insurance for property damage to, and decontamination of, property at Palo Verde |  | 2,800,000,000 |
Maximum amount that APS could incur under the current NEIL policies for each retrospective assessment |  | 23,100,000 |
Collateral assurance provided based on rating triggers |  | $ 61,700,000 |
Period to provide collateral assurance based on rating triggers |  | 20 days |
Arizona Public Service Company | Breach of Contract for Disposal of Spent Nuclear Fuel and/or High Level Radioactive Waste |  |  |
Commitments and Contingencies |  |  |
Litigation settlement amount | $ 16,700,000 |  |
Number of claims submitted | claim |  | 2 |
Number of settlement agreement time periods | time_period |  | 2 |
Proceeds from legal settlements |  | $ 15,700,000 |

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- Definition Represents the "all risk" (including nuclear hazards) insurance for property damage to, and decontamination of, property at Palo Verde of which a substantial portion must first be applied to stabilization and decontamination. + References No definition available. + Details
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- Definition Represents the annual limit per incident with respect to the maximum assessment per reactor under the program for each nuclear incident, to be periodically adjusted for inflation. + References No definition available. + Details
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- Definition Represents the annual payment limitation with respect to maximum potential retrospective assessment. + References No definition available. + Details
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- Definition Represents the collateral assurance provided that depends upon rating triggers such as a rating downgrade to non-investment grade under NEIL policies. + References No definition available. + Details
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- Definition Maximum Amount that Could be Incurred under Retrospective Assessment of NEIL Policies + References No definition available. + Details
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- Definition Represents the maximum assessment per reactor under the program for each nuclear incident. + References No definition available. + Details
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- Definition Represents the maximum available nuclear liability insurance which is provided by commercial insurance carriers, maintained by Palo Verde as required by the Price Anderson Nuclear Industries Indemnity Act. + References No definition available. + Details
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- Definition Represents the maximum insurance amount against public liability per occurrence for a nuclear incident. + References No definition available. + Details
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- Definition Represents the maximum potential retrospective assessment per incident based on the interest of APS in the three Palo Verde units. + References No definition available. + Details
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- Definition Number of VIE lessor trusts with whom agreements have been made to sell and lease back interests in certain nuclear generating assets and related common facilities. + References No definition available. + Details
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