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Asbestos - Central Estimates, Net of Insurance Recoveries (Detail) - Mar. 31, 2017 AUD in Millions, $ in Millions | USD ($) | AUD
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Discounted & Inflated [Member] |  |
Asbestos Claims [Line Items] |  |
Central Estimate, net of insurance recoveries | $ 1,330.1 | AUD 1,740.1
Undiscounted but Inflated [Member] |  |
Asbestos Claims [Line Items] |  |
Central Estimate, net of insurance recoveries | 1,681.5 | 2,199.7
Undiscounted and Uninflated [Member] |  |
Asbestos Claims [Line Items] |  |
Central Estimate, net of insurance recoveries | $ 1,059.2 | AUD 1,385.7

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- Definition Actuarial estimate of the Asbestos related liabilities, net of insurance recoveries. + References No definition available. + Details
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