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Asbestos - Asbestos Adjustments (Detail) - USD ($) $ in Millions | 12 Months Ended
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Mar. 31, 2017 | Mar. 31, 2016 | Mar. 31, 2015
Change in estimates: |  |  |
Change in actuarial estimate - asbestos liability | $ 44.7 | $ 2.4 | $ (129.0)
Change in actuarial estimate - insurance receivable | (8.2) | 4.5 | 16.6
Change in estimate - AICF claims-handling costs | 2.1 | 1.2 | 1.1
Subtotal - Change in estimates | 38.6 | 8.1 | (111.3)
Gain (loss) on foreign currency exchange | 1.8 | (2.6) | 144.7
Total Asbestos Adjustments | $ 40.4 | $ 5.5 | $ 33.4

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- Definition Gain (loss) on foreign exchange movements in the other asbestos related assets and liabilities which are denominated in Australian dollars. + References No definition available. + Details
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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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