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Asbestos - Additional Information (Detail) | 1 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Dec. 31, 2017 USD ($) | Dec. 31, 2017 AUD ($) | Mar. 31, 2020 USD ($) | Mar. 31, 2019 USD ($) | Mar. 31, 2018 USD ($) | Mar. 31, 2020 AUD ($)
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract] |  |  |  |  |  |
Asbestos adjustments | $ 43,600,000 | $ 56,800,000 | $ 58,200,000 | $ 22,000,000.0 | $ 156,400,000 |
Secured standby loan facility maximum borrowing capacity |  |  | 197,700,000 |  |  | $ 320,000,000.0
Loan facility, outstanding balance |  |  | $ 0 |  |  |
Rate of interest of Benchmark Bonds (as percent) |  |  | 6.00% |  |  |
Secured Standby Loan Facility Maturity Date |  |  | Nov. 01, 2030 |  |  |
Maturity date of Benchmark Bonds |  |  | May 01, 2020 |  |  |

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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 Total portion of carrying amounts as of the balance sheet date of AICF drawdown of loan facility with The State of New South Wales Australia. + References No definition available. + Details
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- Definition Maturity date of benchmark bonds. + References No definition available. + Details
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- Definition Rate of interest of benchmark bonds. + References No definition available. + Details
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- Definition Secured standby loan facility maturity date. + References No definition available. + Details
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- Definition Maximum borrowing capacity under the standby loan facility entered into between the Obligors (AICF, Amaca, Amaba and ABN 60) and the State of New South Wales, Australia + References No definition available. + Details
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- References No definition available. + Details
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