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v3.23.1

Asbestos - Summary of Net Unfunded AFFA Liability, Net of Tax (Details) $ in Millions, $ in Millions | 12 Months Ended
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Mar. 31, 2023 USD ($) | Mar. 31, 2023 AUD ($) | Mar. 31, 2022 USD ($) | Mar. 31, 2022 AUD ($) | Mar. 31, 2021 USD ($) | Mar. 31, 2021 AUD ($)
Asbestos Net Liability [Roll Forward] |  |  |  |  |  |
Change in claims handling cost estimate | $ (1.2) |  | $ (0.6) |  | $ (1.5) |
Net Unfunded AFFA Liability, net of tax |  |  |  |  |  |
Asbestos Net Liability [Roll Forward] |  |  |  |  |  |
Net Unfunded AFFA liability, net of tax, Beginning Balance | (433.5) |  |  |  |  |
Asbestos claims paid | 0.0 |  |  |  |  |
Payment received in accordance with AFFA | 109.6 |  |  |  |  |
AICF claims-handling costs incurred (paid) | 0.0 |  |  |  |  |
AICF operating costs paid - non claims-handling | (1.5) |  |  |  |  |
Change in actuarial estimate | (55.9) |  |  |  |  |
Change in claims handling cost estimate | (1.2) |  |  |  |  |
Impact on deferred income tax due to change in actuarial estimate | 17.1 |  |  |  |  |
Insurance recoveries | 0.0 |  |  |  |  |
Movement in income tax payable | (40.1) |  |  |  |  |
Other movements | 0.9 |  |  |  |  |
Effect of foreign exchange | 45.9 |  |  |  |  |
Net Unfunded AFFA liability, net of tax, Ending Balance | (358.7) |  | (433.5) |  |  |
Deferred Tax Assets |  |  |  |  |  |
Asbestos Net Liability [Roll Forward] |  |  |  |  |  |
Asbestos, deferred tax assets, beginning balance | 298.6 |  | 360.1 |  |  |
Impact on deferred income tax due to change in actuarial estimate | 17.1 |  |  |  |  |
Movement in income tax payable | (41.1) |  |  |  |  |
Other movements | (1.2) |  |  |  |  |
Effect of foreign exchange | (36.3) |  |  |  |  |
Asbestos, deferred tax assets, beginning balance | 298.6 |  | 360.1 |  |  |
Income Tax Payable |  |  |  |  |  |
Asbestos Net Liability [Roll Forward] |  |  |  |  |  |
Asbestos, income tax payable, beginning balance | 43.9 |  |  |  |  |
Movement in income tax payable | 1.0 |  |  |  |  |
Other movements | 0.3 |  |  |  |  |
Effect of foreign exchange | (4.5) |  |  |  |  |
Asbestos, income tax payable, ending balance | 40.7 |  | 43.9 |  |  |
Net Unfunded AFFA Liability |  |  |  |  |  |
Asbestos Net Liability [Roll Forward] |  |  |  |  |  |
Asbestos, net liability, beginning balance | (837.5) |  |  |  |  |
Payment received in accordance with AFFA | 109.6 |  |  |  |  |
AICF operating costs paid - non claims-handling | (1.5) |  |  |  |  |
Change in actuarial estimate | (55.9) |  |  |  |  |
Change in claims handling cost estimate | (1.2) |  |  |  |  |
Other movements | 1.8 |  |  |  |  |
Effect of foreign exchange | 86.7 |  |  |  |  |
Asbestos net liability, ending balance | (698.0) |  | (837.5) |  |  |
Asbestos Liability |  |  |  |  |  |
Asbestos Net Liability [Roll Forward] |  |  |  |  |  |
Asbestos, net liability, beginning balance | (1,143.7) |  |  |  |  |
Asbestos claims paid | 106.8 |  |  |  |  |
AICF claims-handling costs incurred (paid) | 1.1 |  |  |  |  |
Change in actuarial estimate | (56.0) |  |  |  |  |
Change in claims handling cost estimate | (1.2) |  |  |  |  |
Effect of foreign exchange | 115.9 |  |  |  |  |
Asbestos net liability, ending balance | (977.1) |  | (1,143.7) |  |  |
Insurance Receivables |  |  |  |  |  |
Asbestos Net Liability [Roll Forward] |  |  |  |  |  |
Asbestos, net liability, beginning balance | 45.7 |  |  |  |  |
Change in actuarial estimate | 0.1 |  |  |  |  |
Insurance recoveries | (6.2) |  |  |  |  |
Effect of foreign exchange | (4.6) |  |  |  |  |
Asbestos net liability, ending balance | 35.0 |  | 45.7 |  |  |
Restricted Cash and Investments |  |  |  |  |  |
Asbestos Net Liability [Roll Forward] |  |  |  |  |  |
Asbestos, net liability, beginning balance | 261.6 |  |  |  |  |
Asbestos claims paid | (106.8) |  |  |  |  |
Payment received in accordance with AFFA | 109.6 | $ 158.8 | 248.5 | $ 328.2 | $ 153.3 | $ 220.9
AICF claims-handling costs incurred (paid) | (1.1) |  |  |  |  |
AICF operating costs paid - non claims-handling | (1.5) |  |  |  |  |
Insurance recoveries | 6.2 |  |  |  |  |
Other movements | 1.8 |  |  |  |  |
Effect of foreign exchange | (25.1) |  |  |  |  |
Asbestos net liability, ending balance | 244.7 |  | 261.6 |  |  |
Other Assets and Liabilities |  |  |  |  |  |
Asbestos Net Liability [Roll Forward] |  |  |  |  |  |
Asbestos, net liability, beginning balance | (1.1) |  |  |  |  |
Effect of foreign exchange | 0.5 |  |  |  |  |
Asbestos net liability, ending balance | $ (0.6) |  | $ (1.1) |  |  |

X
- Definition Portion of deferred income tax asset that becomes available to the Company as an Australian tax deduction resulting from the Company's previous contributions to AICF. + References No definition available. + Details
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