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

Asbestos - Changes in Restricted Cash and Short-Term Investments (Detail)

v2.4.0.6
Asbestos - Changes in Restricted Cash and Short-Term Investments (Detail)
In Millions, unless otherwise specified
 1 Months Ended 12 Months Ended
Apr. 03, 2012
USD ($)
Apr. 03, 2012
AUD
Mar. 31, 2013
USD ($)
Rate
Mar. 31, 2013
AUD
Mar. 31, 2012
USD ($)
Rate
Mar. 31, 2011
USD ($)
Asbestos Claims [Line Items]            
Restricted cash and cash equivalents and restricted short-term investments - Beginning balance     $ 65.0 62.5    
Asbestos claims paid     (125.1) (121.3)    
Payments received in accordance with AFFA     184.1 177.5    
AICF operating costs paid - claims-handling     (2.5) (2.4)    
AICF operating costs paid - non claims-handling     (1.7) (1.6) (2.8) (2.2)
Insurance recoveries     36.8 35.7    
Interest and investment income     7.0 6.8    
Unrealised gain on investments     0.9 0.9    
NSW loan repayment (32.0) (29.7) (30.0) (29.7)    
Other     (0.3) (0.3)    
Loss on foreign currency exchange     (0.7)      
Restricted cash and cash equivalents and restricted short-term investments, Ending balance     $ 133.5 128.1 $ 65.0  
Exchange rate, Beginning balance     0.9614 0.9614    
Asbestos claims paid, Exchange rate     0.9694 0.9694    
Payments received in accordance with AFFA, Exchange rate     0.9641 0.9641    
AICF operating costs paid - claims-handling, Exchange rate     0.9694 0.9694    
AICF operating costs paid - non claims-handling, Exchange rate     0.9694 0.9694    
Insurance recoveries, Exchange rate     0.9694 0.9694    
Interest and investment income, Exchange rate     0.9694 0.9694    
Unrealised gain on investments, Exchange rate     0.9694 0.9694    
NSW loan repayment, Exchange rate     0.9901 0.9901    
Other, Exchange rate     0.9694 0.9694    
Exchange rate, Ending balance     0.9597 0.9597 0.9614