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Risk Management And Financial Instruments - Variable Interest Entities (Detail) $ in Millions | 6 Months Ended
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Jun. 30, 2018 USD ($)
Derivative [Line Items] |
Outstanding principal | $ 141
Interest Rate Swap [Member] | Minimum [Member] |
Derivative [Line Items] |
Pay rates | 0.74%
Interest Rate Swap [Member] | Maximum [Member] |
Derivative [Line Items] |
Pay rates | 3.34%
Derivative Instrument Maturity Date [Member] | Interest Rate Swap [Member] | Variable Interest Entity, Primary Beneficiary [Member] | Minimum [Member] |
Derivative [Line Items] |
Pay rates | 177.00%
Length of contracts | 2013-12
Derivative Instrument Maturity Date [Member] | Interest Rate Swap [Member] | Variable Interest Entity, Primary Beneficiary [Member] | Maximum [Member] |
Derivative [Line Items] |
Pay rates | 201.00%
Length of contracts | 2018-12

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- Definition Amount of the hedged item as of the balance sheet date related to the derivative. For example, the hedged balance on a debt instrument. + References No definition available. + Details
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- Details
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