Annual and transition report of foreign private issuers pursuant to Section 13 or 15(d)

Asbestos - Central Estimates, Net of Insurance Recoveries (Detail)

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Asbestos - Central Estimates, Net of Insurance Recoveries (Detail) - Mar. 31, 2019
$ in Millions, $ in Millions
USD ($)
AUD ($)
Central Estimate – Discounted and Inflated    
Asbestos Claims [Line Items]    
Central Estimate, net of insurance recoveries $ 1,325.9 $ 1,868.4
Central Estimate – Undiscounted but Inflated    
Asbestos Claims [Line Items]    
Central Estimate, net of insurance recoveries 1,574.3 2,218.5
Central Estimate – Undiscounted and Uninflated    
Asbestos Claims [Line Items]    
Central Estimate, net of insurance recoveries $ 993.3 $ 1,399.8