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)

v2.4.0.8
Asbestos - Changes in Restricted Cash and Short-Term Investments (Detail)
In Millions, unless otherwise specified
 12 Months Ended
Mar. 31, 2014
USD ($)
Mar. 31, 2014
AUD
Mar. 31, 2013
USD ($)
Mar. 31, 2012
USD ($)
Insurance [Abstract]        
Restricted cash assets - Beginning balance $ 133.5 128.1    
Asbestos claims paid (131.0) (140.4)    
AICF operating costs paid - claims-handling (2.5) (2.7)    
AICF operating costs paid - non claims-handling (2.1) (2.3) (1.7) (2.8)
Insurance recoveries 25.7 27.5    
Interest and investment income 2.9 3.1    
NSW loan - drawdowns 22.6 25.3    
NSW loan - drawdowns 23.0 25.3    
Interest Received 0.9 0.9    
Other 0.7 0.7    
Effect of foreign exchange (13.4)      
Restricted cash & investments, Ending balance $ 60.3 65.5 $ 133.5  
Exchange rate, Beginning balance 0.9597 0.9597    
Asbestos claims paid, Exchange rate 1.0716 1.0716    
AICF operating costs paid - claims-handling, Exchange rate 1.0716 1.0716    
AICF operating costs paid - non claims-handling, Exchange rate 1.0716 1.0716    
Insurance recoveries, Exchange rate 1.0716 1.0716    
Interest and investment income, Exchange rate 1.0716 1.0716    
NSW loan - drawdowns, Exchange rate 1.1186 1.1186    
NSW loan - drawdowns, Exchange rate 1.0983 1.0983    
Interest Received, Exchange rate 1.0074 1.0074    
Other, Exchange rate 1.0716 1.0716    
Exchange rate, Ending balance 1.0845 1.0845 0.9597