XML 191 R184.htm IDEA: XBRL DOCUMENT v3.8.0.1
Risk Management Activities - Schedule of Contractually Due Undiscounted Cash Flows Resulting from Maturities of All Financial Liabilities, Including Interest Payments (Detail) - USD ($)
$ in Millions
Dec. 31, 2017
Dec. 31, 2016
Disclosure of maturity analysis for non-derivative financial liabilities [line items]    
Trade and other payables $ 451.0 $ 459.3
Environmental rehabilitation costs 381.0 380.8
Total 2,817.3 2,766.6
Copper derivatives [member]    
Disclosure of maturity analysis for non-derivative financial liabilities [line items]    
Copper derivative contracts 3.3  
South deep [member]    
Disclosure of maturity analysis for non-derivative financial liabilities [line items]    
South Deep dividend 12.7 12.8
US dollar borrowings [member]    
Disclosure of maturity analysis for non-derivative financial liabilities [line items]    
Capital 1,360.9 1,637.9
Interest 149.1 209.7
Australian Dollar borrowings [member]    
Disclosure of maturity analysis for non-derivative financial liabilities [line items]    
Capital 231.5  
Interest 23.4  
Rand borrowing [member]    
Disclosure of maturity analysis for non-derivative financial liabilities [line items]    
Capital 193.6 61.0
Interest 10.8 5.1
Within one year [member]    
Disclosure of maturity analysis for non-derivative financial liabilities [line items]    
Trade and other payables 451.0 459.3
Environmental rehabilitation costs 6.5 3.6
Total 737.6 722.0
Within one year [member] | Copper derivatives [member]    
Disclosure of maturity analysis for non-derivative financial liabilities [line items]    
Copper derivative contracts 3.3  
Within one year [member] | South deep [member]    
Disclosure of maturity analysis for non-derivative financial liabilities [line items]    
South Deep dividend 1.6 1.4
Within one year [member] | US dollar borrowings [member]    
Disclosure of maturity analysis for non-derivative financial liabilities [line items]    
Capital 0.0 127.0
Interest 61.3 64.6
Within one year [member] | Australian Dollar borrowings [member]    
Disclosure of maturity analysis for non-derivative financial liabilities [line items]    
Capital 0.0  
Interest 9.5  
Within one year [member] | Rand borrowing [member]    
Disclosure of maturity analysis for non-derivative financial liabilities [line items]    
Capital 193.6 61.0
Interest 10.8 5.1
Later than one and not later than five years [member]    
Disclosure of maturity analysis for non-derivative financial liabilities [line items]    
Trade and other payables 0.0 0.0
Environmental rehabilitation costs 24.8 29.8
Total 1,724.2 1,691.0
Later than one and not later than five years [member] | Copper derivatives [member]    
Disclosure of maturity analysis for non-derivative financial liabilities [line items]    
Copper derivative contracts 0.0  
Later than one and not later than five years [member] | South deep [member]    
Disclosure of maturity analysis for non-derivative financial liabilities [line items]    
South Deep dividend 5.3 5.2
Later than one and not later than five years [member] | US dollar borrowings [member]    
Disclosure of maturity analysis for non-derivative financial liabilities [line items]    
Capital 1,360.9 1,510.9
Interest 87.8 145.1
Later than one and not later than five years [member] | Australian Dollar borrowings [member]    
Disclosure of maturity analysis for non-derivative financial liabilities [line items]    
Capital 231.5  
Interest 13.9  
Later than one and not later than five years [member] | Rand borrowing [member]    
Disclosure of maturity analysis for non-derivative financial liabilities [line items]    
Capital 0.0 0.0
Interest 0.0 0.0
Later than five years [member]    
Disclosure of maturity analysis for non-derivative financial liabilities [line items]    
Trade and other payables 0.0 0.0
Environmental rehabilitation costs 349.7 347.4
Total 355.5 353.6
Later than five years [member] | Copper derivatives [member]    
Disclosure of maturity analysis for non-derivative financial liabilities [line items]    
Copper derivative contracts 0.0  
Later than five years [member] | South deep [member]    
Disclosure of maturity analysis for non-derivative financial liabilities [line items]    
South Deep dividend 5.8 6.2
Later than five years [member] | US dollar borrowings [member]    
Disclosure of maturity analysis for non-derivative financial liabilities [line items]    
Capital 0.0 0.0
Interest 0.0 0.0
Later than five years [member] | Australian Dollar borrowings [member]    
Disclosure of maturity analysis for non-derivative financial liabilities [line items]    
Capital 0.0  
Interest 0.0  
Later than five years [member] | Rand borrowing [member]    
Disclosure of maturity analysis for non-derivative financial liabilities [line items]    
Capital 0.0 0.0
Interest $ 0.0 $ 0.0