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Financing Receivables (Narrative) (Detail) $ in Millions | 9 Months Ended
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Sep. 30, 2019 USD ($)
Schedule of Financial Receivables [Line Items] |
Residual Value impairment | $ 58
Lease investment with non-investment grade counterparties, gross | 236
Lease investment with non-investment grade counterparties, net of deferred taxes | $ (25)
Powerton Station [Member] |
Schedule of Financial Receivables [Line Items] |
Counterparties’ S&P Credit Ratings | BB

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