| 
             Note  | 
            
             Contributed equity $000  | 
            
             Reserves $000  | 
            
             Accumulated surplus/ $000  | 
            
             Total equity $000  | 
        |
|---|---|---|---|---|---|
| 
             Balance at 1 July 2008  | 
            
             2,233,737  | 
            
             794,888  | 
            
             98,175  | 
            
             3,126,800  | 
        |
| 
             Total comprehensive income for the year  | 
            
             0  | 
            
             25,227  | 
            
             (4,005)  | 
            
             21,222  | 
        |
| 
             Transactions with owners in their capacity as owners:  | 
            |||||
| 
             Capital appropriations  | 
            
             124,660  | 
            
             0  | 
            
             0  | 
            
             124,660  | 
        |
| 
             Other contributions by owners  | 
            
             0  | 
            
             0  | 
            
             0  | 
            
             0  | 
        |
| 
             Distributions to owners  | 
            
             0  | 
            
             0  | 
            
             0  | 
            
             0  | 
        |
| 
             Total  | 
            
             124,660  | 
            
             0  | 
            
             0  | 
            
             124,660  | 
        |
| 
             Balance at 30 June 2009  | 
            
             2,358,397  | 
            
             820,115  | 
            
             94,170  | 
            
             3,272,682  | 
        |
| 
             Balance at 1 July 2009  | 
            
             2,358,397  | 
            
             820,115  | 
            
             94,170  | 
            
             3,272,682  | 
        |
| 
             Total comprehensive income for the year  | 
            
             0  | 
            
             1,131,656  | 
            
             16,655  | 
            
             1,148,311  | 
        |
| 
             Transactions with owners in their capacity as owners:  | 
            |||||
| 
             Capital appropriations  | 
            
             58,501  | 
            
             0  | 
            
             0  | 
            
             58,501  | 
        |
| 
             Other contributions by owners  | 
            
             1,103  | 
            
             0  | 
            
             0  | 
            
             1,103  | 
        |
| 
             Distributions to owners  | 
            
             (3,567)  | 
            
             0  | 
            
             0  | 
            
             (3,567)  | 
        |
| 
             Total  | 
            
             56,037  | 
            
             0  | 
            
             0  | 
            
             56,037  | 
        |
| 
             Balance at 30 June 2010  | 
            
             2,414,434  | 
            
             1,951,771  | 
            
             110,825  | 
            
             4,477,030  | 
        
The Statement of Changes in Equity should be read in conjunction with the accompanying notes.