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

Australian Taxation Office - Amended Assessment (Details)

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Australian Taxation Office - Amended Assessment (Details)
In Millions, unless otherwise specified
1 Months Ended 3 Months Ended 12 Months Ended 1 Months Ended 3 Months Ended
Feb. 29, 2012
USD ($)
Mar. 31, 2012
USD ($)
Mar. 31, 2012
AUD
Mar. 31, 2012
USD ($)
Mar. 31, 2012
AUD
Mar. 31, 2011
USD ($)
Mar. 31, 2011
AUD
Mar. 31, 2007
USD ($)
Mar. 31, 2007
AUD
Mar. 31, 2006
RCI [Member]
AUD
Mar. 31, 2006
RCI [Member]
AUD
Mar. 07, 2012
RCI [Member]
USD ($)
Mar. 07, 2012
RCI [Member]
AUD
Feb. 27, 2012
RCI [Member]
USD ($)
Feb. 27, 2012
RCI [Member]
AUD
Income Tax Examination [Line Items]                              
Initial ATO Amended Assessment                   412.0          
Amended assessment total after remissions of general interest charges                     368.0        
Refund of amended assessment paid to subsidiary                       130.5 121.8 265.8 248.0
Australian Taxation Office - Amended Assessment (Textual) [Abstract]                              
Percentage of ATO amended assessment paid               50.00% 50.00%            
Amount of total ATO amended assessment paid               152.5 184.0            
General interest charges on the unpaid portion of amended assessment       68.3 63.7                    
Percentage of unpaid outcome of ATO amended assessment guaranteed by the Company               50.00% 50.00%            
Recognised expense after removing deposit with ATO           345.2 388.0                
Uncertain tax position           198.1 184.3                
Translation spot exchange rate 1.0714                            
Cash remitted to ATO during appeal proceedings 197.5       184.3                    
Aggregate refund amended assessment       396.3 369.8                    
Income tax benefit from RCI's successful appeal   485.2 452.9                        
Reversal of provision for unpaid portion of amended assessment       197.5 184.3                    
Reversal of general interest charges recognised       $ 108.6 101.2