Reviewed condensed group financial statements and unreviewed production and sales volumes information for the year ended 31 December 2014

NOTES TO THE REVIEWED CONDENSED GROUP FINANCIAL STATEMENTSfor the year ended 31 December

    At 31 December  
    2014  
Reviewed  
Rm  
2013  
Audited  
Rm  

13.  

Intangible assets  

   
  Goodwill1      
  At beginning of year   953   902  
  Exchange differences on translation   67   51  
  Impairment charge   (1 020)   
  At end of year     953  
  Patents and licences2      
  Gross carrying amount      
  At beginning of year   232   121  
  Additions   30   201  
  Transfer from other assets   1    
  Write-off   (5)  (90) 
  At end of year   258   232  
  Accumulated amortisation      
  At beginning of year   9   61  
  Write-off   (1)  (88) 
  Amortisation charge   14   36  
  At end of year   22   9  
  Accumulated impairment      
  Impairment charge   202    
  At end of year   202    
  Net carrying amount at end of year   34   1 176  
 
1 Goodwill was allocated to AKI, which is regarded as a single cash-generating unit. Impairment testing was performed on this goodwill based on fair value less costs of disposal where factors such as iron ore prices and respective discount rates were considered. The full amount of goodwill was impaired at 30 June 2014 (refer to note 7).  
2 Includes software licences, intellectual property, which was impaired on 31 December 2014 (refer to note 7), as well as an option to receive specific quantities of water from the Eungella water pipeline (Australia) and the right to receive water from the Zeeland Water Treatment Works (Lephalale).