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Changes In Capitalization (Detail) - Jun. 30, 2015 - USD ($) $ in Millions | Total
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Power [Member] |
Debt Instrument [Line Items] |
Cash dividends paid to parent company | $ 400
Medium Term Notes Three Point Zero Percent Due In Two Thousand Twenty Five [Member] | PSE And G [Member] |
Debt Instrument [Line Items] |
Issued long-term debt | $ 350
Stated interest rate of debt instrument | 3.00%
Medium Term Notes Four Point Zero Five Percent due Two Thousand Forty Five [Member] | PSE And G [Member] |
Debt Instrument [Line Items] |
Issued long-term debt | $ 250
Stated interest rate of debt instrument | 4.05%
Medium Term Notes Two Point Seven Zero Percentage Due On Two Thousand Fifteen [Member] | PSE And G [Member] |
Debt Instrument [Line Items] |
Stated interest rate of debt instrument | 2.70%
Repayments of long-term debt | $ 300
Securitization Debt [Member] | PSE And G [Member] |
Debt Instrument [Line Items] |
Repayments of long-term debt | 117
Transition Fundings Ii Securitization Debt [Member] | PSE And G [Member] |
Debt Instrument [Line Items] |
Repayments of long-term debt | $ 8

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