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Goodwill - Additional Information (Detail)
 12 Months Ended
Dec. 31, 2013
USD ($)
Dec. 31, 2012
Dec. 31, 2013
South Deep Gold Mine
Dec. 31, 2012
South Deep Gold Mine
Dec. 31, 2013
South Africa Rand
South Deep Gold Mine
Dec. 31, 2012
South Africa Rand
South Deep Gold Mine
Dec. 31, 2013
Currency U.S. Dollar
South Deep Gold Mine
Dec. 31, 2012
Currency U.S. Dollar
South Deep Gold Mine
Goodwill [Line Items]                
Impairment to the goodwill $ 0              
Long-term gold price         400,000 400,000 1,300 1,500
Exchange rate     R9.50 to $1.00 R8.29 to $1.00        
South Deep life of mine (in years)     73 years 80 years        
Discount rate, based on a calculated weighted average cost of capital to Gold Fields, lower limit 10.90% 9.40%            
Discount rate, based on a calculated weighted average cost of capital to Gold Fields, upper limit 12.30% 12.10%