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Debt (Narrative) (Detail) $ in Millions | 9 Months Ended
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Sep. 30, 2019 USD ($)
Refinanced Facility [Member] |
Senior notes, aggregate principal amount | $ 278
Proceeds from issuance of senior notes | $ 54
Debt Instrument, Maturity Date | Jan. 20, 2022
Debt instrument interest rate | 12.00%
Debt issuance cost paid | $ 6
Refinanced Facility [Member] | Expenses Of Consolidated Variable Interest Entities [Member] |
Debt issuance cost expensed | 3
Net gains (losses) on extinguishment of debt | $ 1
6.400% Senior Notes due 2022 [Member] |
Debt instrument interest rate | 6.40%
Long term debt redemption amount | $ 150
Percentage of debt redemption | 100.00%

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