United States Dollar  
  Figures in millions unless otherwise stated 2018      2017  
33.  FINANCE LEASE LIABILITIES                
   Balance at the beginning of the year  –        –    
   Additions1  96.2        –    
   Interest expense  0.2        –    
   Repayments  (2.5)       –    
   Translation adjustment  (5.3)       –    
   Balance at the end of the year  88.6        –    
   Current portion of finance lease liability  (8.5)       –    
   Non-current portion of finance lease liability  80.1        –    
   Finance lease liabilities are payable as follows:                
   Future minimum lease payments                
   – within one year  11.6        –    
   – later than one and not later than five years  41.5        –    
   – later than five years  58.4        –    
   Total  111.5        –    
   – within one year  3.1        –    
   – later than one and not later than five years  11.5        –    
   – later than five years  8.3        –    
   Total  22.9        –    
   Present value of minimum lease payments                
   – within one year  8.5        –    
   – later than one and not later than five years  30.0        –    
   – later than five years  50.1        –    
   Total  88.6        –    
  1 The finance lease additions relate mainly to the power purchase agreement at Gruyere. Gruyere joint venture (“Gruyere”) entered into a contract with APA Power Holdings Proprietary Limited (“APA”) for the supply of electricity to the Gruyere Mine. Gruyere has contracted APA to design, construct, operate and maintain the power facilities including gas pipelines for a period of 15 years. Gruyere pays a fee including a fixed monthly charge over the term of the arrangement, that is adjusted by the Australian consumer price index (“CPI”) on an annual basis. Due to the location of the site and the capacity of the plant, APA is unlikely to sell the power generated to other customers. Accordingly, although the arrangement is not in the legal form of a lease, in terms of IFRIC 4 Determining Whether an Arrangement Contains a Lease, it meets the definition of a lease and the lease was classified as a finance lease. At the inception of the arrangement, payments were split into lease payments and non-lease payments based on their relative fair values. The imputed finance costs on the liability were determined based on the interest rate implicit in the lease of 3.46%. The Group has proportionately consolidated its share of the finance lease.