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

Reclassifications Out of Accumulated Other Comprehensive Income (Loss) - Additional Information (Detail)

v2.4.0.6
Reclassifications Out of Accumulated Other Comprehensive Income (Loss) - Additional Information (Detail)
In Millions, unless otherwise specified
12 Months Ended
Mar. 31, 2013
USD ($)
Mar. 31, 2013
AUD
Jun. 30, 2012
USD ($)
Jun. 30, 2012
AUD
Reclassifications Out Of Accumulated Other Comprehensive Income [Line Items]        
AICF invested excess cash in time deposits $ 106.5 105.0 $ 106.5 105.0
Realized gain on available-for-sale securities 2.7 2.6    
Amounts reclassified from Accumulated Other Comprehensive Income to Interest Income (Expense) $ 2.7 2.6