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

Summary of Significant Accounting Policies - Additional Information (Detail)

v3.4.0.3
Summary of Significant Accounting Policies - Additional Information (Detail)
shares in Millions
12 Months Ended
Mar. 31, 2016
Directors
shares
Mar. 31, 2015
shares
Mar. 31, 2014
shares
Summary Of Significant Accounting Policies [Line Items]      
Ownership interest rate percentage 100.00%    
Number of directors appointed by Company 3    
Number of Directors appointed by NSW Government 2    
Equity awards vested percentage after first year 25.00%    
Equity awards vested percentage after second year 25.00%    
Equity awards vested percentage after third year 50.00%    
Potential diluted common shares outstanding | shares 1.3 1.7 1.9
AICF Funding [Member]      
Summary Of Significant Accounting Policies [Line Items]      
Ownership interest rate percentage 0.00%