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

Asbestos (Details 5)

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Asbestos (Details 5)
In Millions, unless otherwise specified
 1 Months Ended 12 Months Ended
Feb. 29, 2012
USD ($)
Feb. 29, 2012
AUD
Mar. 31, 2012
USD ($)
Mar. 31, 2012
AUD
Mar. 31, 2011
USD ($)
Mar. 31, 2010
USD ($)
Changes in the restricted cash and short-term investments of the AICF            
Restricted cash and cash equivalents and restricted short-term investments, Beginning balance     $ 61.9 59.9    
Exchange rate, Beginning balance     0.9676 0.9676    
Asbestos claims paid     (103.5) (99.1)    
Asbestos claims paid, Exchange rate     0.9573 0.9573    
Payments received in accordance with AFFA     51.5 48.9    
Payments received in accordance with AFFA, Exchange rate     0.9487 0.9487    
AICF operating costs paid - claims-handling     (2.8) (2.7) (2.2) (2.1)
AICF operating costs paid - claims handling, Exchange rate     0.9573 0.9573    
AICF operating costs paid - non-claims handling     (2.8) (2.7)    
AICF operating costs paid - non-claims handling, Exchange rate     0.9573 0.9573    
Insurance recoveries     25.0 23.9    
Insurance Recoveries Exchange Rate     0.9573 0.9573    
Interest and investment income     3.3 3.2    
Interest and investment income, Exchange rate     0.9573 0.9573    
Unrealized gain on investments     0.1 0.1    
Unrealized gain on investments, Exchange rate     0.9573 0.9573    
Proceeds from loan facility 32.0 29.7 32.0 29.7    
Proceeds from loan facility, exchange rate     0.9281 0.9281    
Other     1.4 1.3    
Other, Exchange rate     0.9573 0.9573    
Loss on foreign currency exchange     (1.1)      
Restricted cash and cash equivalents and restricted short-term investments, Ending balance     $ 65.0 62.5 $ 61.9  
Exchange rate, Ending balance     0.9614 0.9614 0.9676