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Senior Notes and Other Long-Term Debt - Components of Long-Term Debt (Parenthetical) (Detail) - Ex-Im Credit Facility [Member] - USD ($) $ in Millions | Sep. 30, 2017 | Mar. 31, 2017
--- | --- | ---
Other Long-Term Debt |  |
Exposure fees included in the principal | $ 35.3 | $ 29.5
Unamortized discount and debt issuance costs on Ex-Im Credit Facility related to the exposure fees |  | $ 23.0

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- References No definition available. + Details
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- Definition Unamortized discount related to exposure fees. + References No definition available. + Details
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- Details
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Namespace Prefix: |
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Period Type: |