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Financing Receivables (Schedule Of Assets Under Lease Receivables) (Detail) $ in Millions | 9 Months Ended
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Sep. 30, 2019 USD ($) MW
Powerton Station Units 5 And 6 [Member] |
Schedule of Financial Receivables [Line Items] |
Location | IL
Gross Investment | $ | $ 75
% Owned | 64.00%
Total MW | MW | 1,538
Fuel Type | Coal
Counterparties’ S&P Credit Ratings | BB
Counterparty | NRG Energy, Inc.
Joliet Station Units 7 And 8 [Member] |
Schedule of Financial Receivables [Line Items] |
Location | IL
Gross Investment | $ | $ 85
% Owned | 64.00%
Total MW | MW | 1,036
Fuel Type | Gas
Counterparties’ S&P Credit Ratings | BB
Counterparty | NRG Energy, Inc.
Shawville Station Units 1, 2, 3 And 4 [Member] |
Schedule of Financial Receivables [Line Items] |
Location | PA
Gross Investment | $ | $ 76
% Owned | 100.00%
Total MW | MW | 596
Fuel Type | Gas
Counterparties’ S&P Credit Ratings | NR
Counterparty | REMA

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- Definition Lease Receivable, Asset Capacity + References No definition available. + Details
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Data Type: | num:powerItemType
Balance Type: | na
Period Type: | instant

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- Definition Lease Receivable, Asset, Fuel Type + References No definition available. + Details
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Data Type: | xbrli:stringItemType
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- Definition Lease Receivable, Asset Location + References No definition available. + Details
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Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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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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Period Type: | duration

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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 Schedule of Financial Receivables [Line Items] + References No definition available. + Details
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Balance Type: | na
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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |