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Asbestos - Summary of Net Unfunded AFFA Liability, Net of Tax (Parenthetical) (Detail) AUD in Millions, $ in Millions | 12 Months Ended
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Mar. 31, 2017 USD ($) | Mar. 31, 2017 AUD | Mar. 31, 2016 USD ($) | Mar. 31, 2015 USD ($)
Asbestos Claims [Line Items] |  |  |  |
Income tax payable | $ 16.8 |  | $ 19.6 |
Other assets and liabilities of AICF | 1.6 |  | 1.0 |
Payment received in accordance with AFFA | $ 91.1 | AUD 120.7 |  |
Translation of payments at exchange rate, number of days prior to payment date | 5 days | 5 days |  |
Asbestos adjustments | $ (40.4) |  | $ (5.5) | $ (33.4)
Effect of foreign exchange | (2.7) |  |  |
Gain loss on foreign currency forward contract of AICF payment | 0.9 |  |  |
Minimum [Member] |  |  |  |
Asbestos Claims [Line Items] |  |  |  |
Asbestos adjustments | 40.4 |  |  |
Effect of foreign exchange | $ 2.7 |  |  |

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- Definition Comprised of changes in actuarial estimates received as of March 31 each year and the effect of foreign exchange movements in the asbestos related assets and liabilities which are denominated in Australian dollars. + References No definition available. + Details
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- Definition Asbestos Claims [Line Items] + References No definition available. + Details
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- Definition Foreign exchange gain or loss in the asbestos liability due to change in closing exchange rates between the currencies at the beginning and ending balance sheet dates. + References No definition available. + Details
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- Definition Australian tax deduction available to be taken by the Company resulting from the Company's previous contributions to AICF. + References No definition available. + Details
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- Definition Net Other Assets And Liabilities Of Asbestos Injuries Compensation Fund + References No definition available. + Details
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- Details
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