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Financing Receivables (Schedule Of Assets Under Lease Receivables) (Detail) $ in Millions | 12 Months Ended
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Dec. 31, 2018 USD ($) MW
Powerton Station Units 5 And 6 [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Lease Receivable, Asset Location | IL |
Lease Receivable, Gross Investment | $ | $ 133 |
Lease Receivable, % Owned | 64.00% |
Lease Receivable, Total, MW | MW | 1,538 |
Lease Receivable, Asset, Fuel Type | Coal |
Lease Receivable, Counterparties' S&P Credit Ratings | BB |
Lease Receivable, Counterparty | NRG Energy, Inc. |
Joliet Station Units 7 And 8 [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Lease Receivable, Asset Location | IL |
Lease Receivable, Gross Investment | $ | $ 85 |
Lease Receivable, % Owned | 64.00% |
Lease Receivable, Total, MW | MW | 1,036 |
Lease Receivable, Asset, Fuel Type | Gas |
Lease Receivable, Counterparties' S&P Credit Ratings | BB |
Lease Receivable, Counterparty | NRG Energy, Inc. |
Shawville Station [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Lease Receivable, Asset Location | PA |
Lease Receivable, Gross Investment | $ | $ 78 |
Lease Receivable, % Owned | 100.00% |
Lease Receivable, Total, MW | MW | 596 |
Lease Receivable, Asset, Fuel Type | Gas |
Lease Receivable, Counterparties' S&P Credit Ratings | NR |
Lease Receivable, Counterparty | REMA (A) | [1]
[1] | REMA emerged from Chapter 11 of the U.S. Bankruptcy Code in December 2018. For additional information, see Note 8. Long-Term Investments.

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- Definition Lease Receivable, Asset Capacity + References No definition available. + Details
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- Definition Lease Receivable, Asset, Fuel Type + References No definition available. + Details
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- Definition Lease Receivable, Asset Location + References No definition available. + Details
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- Definition Lease receivable counterparties credit ratings + References No definition available. + Details
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- Definition Lease Receivable, Counterparty + References No definition available. + Details
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- Definition Lease Receivable, Gross Investment + References No definition available. + Details
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- Definition Lease Receivable, Percent Owned + References No definition available. + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Details
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- Details
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- Details
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