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Asbestos - Summary of Net Unfunded AFFA Liability, Net of Tax 2 (Detail) $ in Millions, $ in Millions | 3 Months Ended | 12 Months Ended | 60 Months Ended
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Mar. 31, 2018 USD ($) | Mar. 31, 2017 USD ($) | Mar. 31, 2016 USD ($) | Mar. 31, 2019 USD ($) | Mar. 31, 2019 AUD ($) | Mar. 31, 2018 USD ($) | Mar. 31, 2017 USD ($) | Mar. 31, 2019 USD ($) | Mar. 31, 2019 AUD ($)
Asbestos Claims [Line Items] |  |  |  |  |  |  |  |  |
Translation of payments at exchange rate, number of days prior to payment date |  |  |  | 5 days | 5 days |  |  |  |
Payment to fund |  |  |  | $ 103.0 |  | $ 102.2 | $ 91.1 | $ 472.1 | $ 595.3
Net cash provided by operating activities | $ 295.0 | $ 292.1 | $ 260.4 | 287.6 |  |  |  |  |
Adjustment to Net Cash Provided by (Used in) Operating Activities |  |  |  | 0.8 |  |  |  |  |
Asbestos Liability |  |  |  |  |  |  |  |  |
Asbestos Claims [Line Items] |  |  |  |  |  |  |  |  |
Asbestos claims paid |  |  |  | 107.6 | $ 147.5 |  |  |  |
Net Unfunded AFFA Liability |  |  |  |  |  |  |  |  |
Asbestos Claims [Line Items] |  |  |  |  |  |  |  |  |
Payment received in accordance with AFFA |  |  |  | $ 103.0 | $ 138.4 |  |  |  |
AICF Funding |  |  |  |  |  |  |  |  |
Asbestos Claims [Line Items] |  |  |  |  |  |  |  |  |
Maximum percentage of Free Cash Flow contributed to AICF (as percent) |  |  |  | 35.00% | 35.00% |  |  |  |
Net cash provided by operating activities |  |  |  | $ 288.4 |  |  |  |  |

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- Definition Maximum percentage of Free Cash Flow (as defined in the Amended and Restated Final Funding Agreement) in any given Financial year that is contributed to the Asbestos Injuries Compensation Fund in the next Financial Year. + References No definition available. + Details
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- Definition Under the terms of the Amended and Restated Final Funding Agreement (AFFA), a wholly owned Australian subsidiary (the Performing Subsidiary) has an obligation to make payments to the AICF on an annual basis. The amount of these annual payments is dependent on several factors, including the Company's free cash flow (as defined by the AFFA), actuarial estimations, actual claims paid, operating expenses of the AICF and the annual cash flow cap. + References No definition available. + Details
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- Definition Amount of cash inflow (outflow) from operating activities, including discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 25 -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3536-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3521-108585 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3602-108585 + Details
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