Property, Plant and Equipment - Components of Property, Plant and Equipment (Parenthetical) (Detail) - USD ($) $ in Millions |
12 Months Ended | |
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Mar. 31, 2016 |
Mar. 31, 2015 |
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| Property Plant And Equipment Capitalized Interest Costs [Abstract] | ||
| Capitalized interest | $ 3.2 | $ 1.7 |
| Net book value of disposals | 16.4 | |
| Net book value of disposals, usage of replacement parts | 10.9 | |
| Net book value of disposals, impairment charges | 3.5 | |
| Net book value of disposals, disposal of assets no longer in use | $ 2.0 | |
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- Definition Property Plant And Equipment Capitalized Interest Costs [Abstract] No definition available.
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- Definition Property plant and equipment disposal impairment charges. No definition available.
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- Definition Property plant and equipment disposals net. No definition available.
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- Definition Property plant and equipment disposals of assets no longer in use. No definition available.
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- Definition Property plant and equipment disposals usage of replacement parts. No definition available.
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- Definition The amount of cash paid during the current period for interest that is capitalized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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