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v3.22.1

Asbestos - Summary of Net Unfunded AFFA Liability, Net of Tax (Details) $ in Millions, $ in Millions | 12 Months Ended
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Mar. 31, 2022 USD ($) | Mar. 31, 2022 AUD ($) | Mar. 31, 2021 USD ($) | Mar. 31, 2021 AUD ($) | Mar. 31, 2020 USD ($) | Mar. 31, 2020 AUD ($)
Asbestos Net Liability [Roll Forward] |  |  |  |  |  |
Change in claims handling cost estimate | $ (0.6) |  | $ (1.5) |  | $ 0.1 |
Net Unfunded AFFA Liability, net of tax |  |  |  |  |  |
Asbestos Net Liability [Roll Forward] |  |  |  |  |  |
Net Unfunded AFFA liability, net of tax, Beginning Balance | (554.1) |  |  |  |  |
Asbestos claims paid | 0.0 |  |  |  |  |
Payment received in accordance with AFFA | 248.5 |  |  |  |  |
AICF claims-handling costs incurred (paid) | 0.0 |  |  |  |  |
AICF operating costs paid - non claims-handling | (1.3) |  |  |  |  |
Change in actuarial estimate | (140.3) |  |  |  |  |
Change in claims handling cost estimate | (0.6) |  |  |  |  |
Impact on deferred income tax due to change in actuarial estimate | 42.3 |  |  |  |  |
Insurance recoveries | 0.0 |  |  |  |  |
Movement in income tax payable | (34.9) |  |  |  |  |
Other movements | (6.3) |  |  |  |  |
Effect of foreign exchange | 13.2 |  |  |  |  |
Net Unfunded AFFA liability, net of tax, Ending Balance | (433.5) |  | (554.1) |  |  |
Deferred Tax Assets |  |  |  |  |  |
Asbestos Net Liability [Roll Forward] |  |  |  |  |  |
Asbestos, deferred tax assets, beginning balance | 360.1 |  | 367.4 |  |  |
Impact on deferred income tax due to change in actuarial estimate | 42.3 |  |  |  |  |
Movement in income tax payable | (43.3) |  |  |  |  |
Other movements | 0.1 |  |  |  |  |
Effect of foreign exchange | (6.4) |  |  |  |  |
Asbestos, deferred tax assets, beginning balance | 360.1 |  | 367.4 |  |  |
Income Tax Payable |  |  |  |  |  |
Asbestos Net Liability [Roll Forward] |  |  |  |  |  |
Asbestos, income tax payable, beginning balance | 35.2 |  |  |  |  |
Movement in income tax payable | 8.4 |  |  |  |  |
Effect of foreign exchange | 0.3 |  |  |  |  |
Asbestos, income tax payable, ending balance | 43.9 |  | 35.2 |  |  |
Net Unfunded AFFA Liability |  |  |  |  |  |
Asbestos Net Liability [Roll Forward] |  |  |  |  |  |
Asbestos, net liability, beginning balance | (956.7) |  |  |  |  |
Payment received in accordance with AFFA | 248.5 |  |  |  |  |
AICF operating costs paid - non claims-handling | (1.3) |  |  |  |  |
Change in actuarial estimate | (140.3) |  |  |  |  |
Change in claims handling cost estimate | (0.6) |  |  |  |  |
Other movements | (6.4) |  |  |  |  |
Effect of foreign exchange | 19.3 |  |  |  |  |
Asbestos net liability, ending balance | (837.5) |  | (956.7) |  |  |
Asbestos Liability |  |  |  |  |  |
Asbestos Net Liability [Roll Forward] |  |  |  |  |  |
Asbestos, net liability, beginning balance | (1,135.8) |  |  |  |  |
Asbestos claims paid | 117.6 | $ 159.1 |  |  |  |
AICF claims-handling costs incurred (paid) | 1.2 |  |  |  |  |
Change in actuarial estimate | (145.6) |  |  |  |  |
Change in claims handling cost estimate | (0.6) |  |  |  |  |
Effect of foreign exchange | 19.5 |  |  |  |  |
Asbestos net liability, ending balance | (1,143.7) |  | (1,135.8) |  |  |
Insurance Receivables |  |  |  |  |  |
Asbestos Net Liability [Roll Forward] |  |  |  |  |  |
Asbestos, net liability, beginning balance | 49.5 |  |  |  |  |
Change in actuarial estimate | 5.3 |  |  |  |  |
Insurance recoveries | (8.3) |  |  |  |  |
Effect of foreign exchange | (0.8) |  |  |  |  |
Asbestos net liability, ending balance | 45.7 |  | 49.5 |  |  |
Restricted Cash and Investments |  |  |  |  |  |
Asbestos Net Liability [Roll Forward] |  |  |  |  |  |
Asbestos, net liability, beginning balance | 131.5 |  |  |  |  |
Asbestos claims paid | (117.6) |  |  |  |  |
Payment received in accordance with AFFA | 248.5 | $ 328.2 | 153.3 | $ 220.9 | $ 108.9 | $ 156.7
AICF claims-handling costs incurred (paid) | (1.2) |  |  |  |  |
AICF operating costs paid - non claims-handling | (1.3) |  |  |  |  |
Insurance recoveries | 8.3 |  |  |  |  |
Other movements | (7.4) |  |  |  |  |
Effect of foreign exchange | 0.8 |  |  |  |  |
Asbestos net liability, ending balance | 261.6 |  | 131.5 |  |  |
Other Assets and Liabilities |  |  |  |  |  |
Asbestos Net Liability [Roll Forward] |  |  |  |  |  |
Asbestos, net liability, beginning balance | (1.9) |  |  |  |  |
Other movements | 1.0 |  |  |  |  |
Effect of foreign exchange | (0.2) |  |  |  |  |
Asbestos net liability, ending balance | $ (1.1) |  | $ (1.9) |  |  |

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