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Short-Term and Long-Term Loans - Additional Information (Detail) Share data in Millions, unless otherwise specified | 1 Months Ended | 6 Months Ended | 12 Months Ended |  |  |  |  | 1 Months Ended |  | 1 Months Ended |  |  | 1 Months Ended |  |  | 1 Months Ended |  |  | 12 Months Ended |  | 12 Months Ended |  | 1 Months Ended | 12 Months Ended | 1 Months Ended |  | 1 Months Ended | 12 Months Ended |  |  | 1 Months Ended | 12 Months Ended |  | 1 Months Ended | 6 Months Ended | 12 Months Ended |  |  | 1 Months Ended |  | 1 Months Ended | 12 Months Ended |  | 1 Months Ended |  | 1 Months Ended | 6 Months Ended |  | 1 Months Ended | 12 Months Ended |  | 1 Months Ended | 6 Months Ended | 12 Months Ended |  | 1 Months Ended | 12 Months Ended | 1 Months Ended | 12 Months Ended |  | 1 Months Ended |  |  | 6 Months Ended | 12 Months Ended |  | 1 Months Ended | 2 Months Ended |  |  |  | 12 Months Ended |  |  | 6 Months Ended | 12 Months Ended |  | 1 Months Ended | 12 Months Ended |  |  |  |  | 12 Months Ended | 1 Months Ended |  | 12 Months Ended |  | 1 Months Ended | 12 Months Ended
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Nov. 28, 2012 USD ($) | Nov. 28, 2012 ZAR | Dec. 31, 2010 USD ($) | Dec. 31, 2012 USD ($) | Dec. 31, 2011 USD ($) | Jun. 30, 2010 USD ($) | Dec. 31, 2012 ZAR | Nov. 16, 2012 ZAR | Oct. 24, 2012 USD ($) | Oct. 24, 2012 ZAR | Dec. 31, 2011 ZAR | Jan. 30, 2013 Subsequent Event USD ($) | Feb. 18, 2013 Subsequent Event USD ($) | Mar. 08, 2013 Subsequent Event Gold Fields Operations ZAR | Mar. 08, 2013 Subsequent Event GFI Joint Venture Holdings USD ($) | Jan. 30, 2013 Bridge Facility Subsequent Event USD ($) | Nov. 28, 2012 Refinancing of Line of Credit, Non-Revolving Credit Facility USD ($) | Nov. 28, 2012 Term Loan Credit Facilty [Member] USD ($) | Nov. 28, 2012 Term Loan Credit Facilty [Member] ZAR | Mar. 01, 2013 Nedbank Revolving Credit Facility [Member] Subsequent Event ZAR | Nov. 28, 2012 Spin Off [Member] | Nov. 28, 2012 Spin Off [Member] Term Loan Credit Facilty [Member] USD ($) | Nov. 28, 2012 Spin Off [Member] Term Loan Credit Facilty [Member] ZAR | Nov. 28, 2012 $500 million Syndicated Revolving Credit Facility USD ($) | Feb. 15, 2013 $500 million Syndicated Revolving Credit Facility Subsequent Event USD ($) | Nov. 28, 2012 R1 billion syndicated revolving credit facility USD ($) | Nov. 28, 2012 R1 billion syndicated revolving credit facility ZAR | Feb. 15, 2013 R1 billion syndicated revolving credit facility Subsequent Event USD ($) | Dec. 31, 2012 R3.5 billion long term revolving credit facility [Member] USD ($) | Dec. 31, 2012 R3.5 billion long term revolving credit facility [Member] ZAR | Dec. 31, 2012 Uncollateralized Loan [Member] Nedbank Revolving Credit Facility [Member] | Dec. 31, 2010 Collateralized Mvelaphanda Resources Limited | Dec. 31, 2012 Collateralized Split tenor revolving credit facility USD ($) | Dec. 31, 2011 Collateralized Split tenor revolving credit facility USD ($) | May 16, 2007 Collateralized Split tenor revolving credit facility USD ($) | May 26, 2011 Collateralized Split tenor revolving credit facility Orogen Investments SA (Luxembourg) USD ($) | Jun. 30, 2010 Collateralized Split tenor revolving credit facility Orogen Investments SA (Luxembourg) USD ($) | Apr. 30, 2008 Collateralized Split tenor revolving credit facility 364-Day Revolving Credit USD ($) | May 16, 2007 Collateralized Split tenor revolving credit facility 364-Day Revolving Credit USD ($) | May 15, 2009 Collateralized Split tenor revolving credit facility 364-Day Revolving Credit Orogen Investments SA (Luxembourg) USD ($) | Jun. 30, 2008 Collateralized Split tenor revolving credit facility 364-Day Revolving Credit Orogen Investments SA (Luxembourg) USD ($) | May 15, 2009 Collateralized Split tenor revolving credit facility 364-Day Revolving Credit Gold Fields Operations USD ($) | Jun. 30, 2008 Collateralized Split tenor revolving credit facility 364-Day Revolving Credit Gold Fields Operations USD ($) | Apr. 30, 2008 Collateralized Split tenor revolving credit facility 5 Year Revolving Credit | Dec. 31, 2012 Collateralized Split tenor revolving credit facility 5 Year Revolving Credit | May 16, 2007 Collateralized Split tenor revolving credit facility 5 Year Revolving Credit USD ($) | Apr. 26, 2012 Collateralized Split tenor revolving credit facility 5 Year Revolving Credit Orogen Investments SA (Luxembourg) USD ($) | Jun. 22, 2011 Collateralized Split tenor revolving credit facility 5 Year Revolving Credit Orogen Investments SA (Luxembourg) USD ($) | Mar. 22, 2011 Collateralized Split tenor revolving credit facility 5 Year Revolving Credit Orogen Investments SA (Luxembourg) USD ($) | Aug. 31, 2010 Collateralized Split tenor revolving credit facility 5 Year Revolving Credit Orogen Investments SA (Luxembourg) USD ($) | Dec. 31, 2010 Collateralized Split tenor revolving credit facility 5 Year Revolving Credit Orogen Investments SA (Luxembourg) USD ($) | Jun. 30, 2009 Collateralized Split tenor revolving credit facility 5 Year Revolving Credit Orogen Investments SA (Luxembourg) USD ($) | Jun. 30, 2008 Collateralized Split tenor revolving credit facility 5 Year Revolving Credit Orogen Investments SA (Luxembourg) USD ($) | Dec. 31, 2011 Collateralized Split tenor revolving credit facility 5 Year Revolving Credit Orogen Investments SA (Luxembourg) USD ($) | Oct. 08, 2010 Collateralized Split tenor revolving credit facility 5 Year Revolving Credit Orogen Investments SA (Luxembourg) USD ($) | Sep. 30, 2009 Collateralized Split tenor revolving credit facility 5 Year Revolving Credit Gold Fields Operations USD ($) | May 15, 2009 Collateralized Split tenor revolving credit facility 5 Year Revolving Credit Gold Fields Operations USD ($) | Jun. 30, 2008 Collateralized Split tenor revolving credit facility 5 Year Revolving Credit Gold Fields Operations USD ($) | Apr. 17, 2012 Collateralized $500 million Syndicated Revolving Credit Facility USD ($) | Dec. 31, 2012 Collateralized $500 million Syndicated Revolving Credit Facility USD ($) | Dec. 31, 2012 Collateralized $500 million Syndicated Revolving Credit Facility Utilization under the facility is less than or equal to 33 1/3% | Dec. 31, 2012 Collateralized $500 million Syndicated Revolving Credit Facility Utilization under the facility is greater than 33 1/3% and less than or equal to 66 2/3% | Dec. 31, 2012 Collateralized $500 million Syndicated Revolving Credit Facility Utilisation is greater than 66 2/3% | Nov. 23, 2012 Collateralized $500 million Syndicated Revolving Credit Facility Orogen Investments SA (Luxembourg) USD ($) | Nov. 29, 2012 Collateralized $500 million Syndicated Revolving Credit Facility Orogen Investments SA (Luxembourg) USD ($) | Sep. 20, 2012 Collateralized $500 million Syndicated Revolving Credit Facility Orogen Investments SA (Luxembourg) USD ($) | Aug. 02, 2012 Collateralized $500 million Syndicated Revolving Credit Facility Orogen Investments SA (Luxembourg) USD ($) | Jul. 25, 2012 Collateralized $500 million Syndicated Revolving Credit Facility Orogen Investments SA (Luxembourg) USD ($) | Jun. 01, 2012 Collateralized $500 million Syndicated Revolving Credit Facility Orogen Investments SA (Luxembourg) USD ($) | Apr. 23, 2012 Collateralized $500 million Syndicated Revolving Credit Facility Orogen Investments SA (Luxembourg) USD ($) | Dec. 31, 2012 Collateralized $500 million Syndicated Revolving Credit Facility Orogen Investments SA (Luxembourg) USD ($) | Feb. 15, 2013 Collateralized $500 million Syndicated Revolving Credit Facility Subsequent Event USD ($) | Mar. 31, 2011 Collateralized Preference shares USD ($) | Oct. 10, 2008 Collateralized Preference shares USD ($) | Dec. 24, 2007 Collateralized Preference shares ZAR | Dec. 31, 2010 Collateralized Preference shares USD ($) | Dec. 24, 2007 Collateralized Preference shares Minimum | Dec. 24, 2007 Collateralized Preference shares Maximum | Apr. 05, 2011 Collateralized Scrip Loan USD ($) | Apr. 05, 2011 Collateralized Scrip Loan ZAR | Mar. 26, 2010 Collateralized Scrip Loan USD ($) | Mar. 26, 2010 Collateralized Scrip Loan ZAR | Dec. 31, 2012 Collateralized Scrip Loan USD ($) | Dec. 31, 2011 Collateralized Scrip Loan USD ($) | Mar. 26, 2010 Collateralized Scrip Loan Mvelaphanda Resources Limited | Sep. 30, 2010 Collateralized Non-revolving Senior Secured Term Loan USD ($) | Dec. 31, 2010 Collateralized Non-revolving Senior Secured Term Loan USD ($) | Dec. 31, 2012 Collateralized Non-revolving Senior Secured Term Loan USD ($) Installment | Dec. 31, 2011 Collateralized Non-revolving Senior Secured Term Loan USD ($) | Sep. 17, 2010 Collateralized Non-revolving Senior Secured Term Loan USD ($) | Sep. 30, 2010 Collateralized $1 Billion Notes Issue Orogen Investments SA (Luxembourg) USD ($) | Dec. 31, 2012 Collateralized $1 Billion Notes Issue Orogen Investments SA (Luxembourg) USD ($) | Jun. 20, 2011 Collateralized R1 billion syndicated revolving credit facility USD ($) | Dec. 31, 2012 Collateralized R1 billion syndicated revolving credit facility USD ($) | Dec. 31, 2011 Collateralized R1 billion syndicated revolving credit facility USD ($) | Dec. 31, 2012 Collateralized R1 billion syndicated revolving credit facility Utilization under the facility is less than or equal to 33 1/3% | Dec. 31, 2012 Collateralized R1 billion syndicated revolving credit facility Utilization under the facility is greater than 33 1/3% and less than or equal to 66 2/3% | Apr. 23, 2012 Collateralized R1 billion syndicated revolving credit facility Orogen Investments SA (Luxembourg) USD ($) | Apr. 16, 2012 Collateralized R1 billion syndicated revolving credit facility Orogen Investments SA (Luxembourg) USD ($) | Mar. 15, 2012 Collateralized R1 billion syndicated revolving credit facility Orogen Investments SA (Luxembourg) USD ($) | Dec. 19, 2011 Collateralized R1 billion syndicated revolving credit facility Orogen Investments SA (Luxembourg) USD ($) | Dec. 23, 2011 Collateralized R1 billion syndicated revolving credit facility Orogen Investments SA (Luxembourg) USD ($) | Nov. 30, 2011 Collateralized R1 billion syndicated revolving credit facility Orogen Investments SA (Luxembourg) USD ($) | Sep. 30, 2011 Collateralized R1 billion syndicated revolving credit facility Orogen Investments SA (Luxembourg) USD ($) | Aug. 30, 2011 Collateralized R1 billion syndicated revolving credit facility Orogen Investments SA (Luxembourg) USD ($) | Jun. 30, 2011 Collateralized R1 billion syndicated revolving credit facility Orogen Investments SA (Luxembourg) USD ($) | Dec. 31, 2012 Collateralized R1 billion syndicated revolving credit facility Orogen Investments SA (Luxembourg) USD ($) | Dec. 31, 2011 Collateralized R1 billion syndicated revolving credit facility Orogen Investments SA (Luxembourg) USD ($) | Dec. 31, 2010 Collateralized $60 million senior secured revolving credit facility | Dec. 31, 2012 Collateralized $60 million senior secured revolving credit facility USD ($) | Dec. 31, 2011 Collateralized $60 million senior secured revolving credit facility USD ($) | Dec. 22, 2010 Collateralized $60 million senior secured revolving credit facility USD ($) | Aug. 31, 2012 Collateralized $60 million senior secured revolving credit facility Abosso Goldfields Limited USD ($) | Apr. 30, 2012 Collateralized $60 million senior secured revolving credit facility Abosso Goldfields Limited USD ($) | May 01, 2012 Collateralized $60 million senior secured revolving credit facility Abosso Goldfields Limited USD ($) | Feb. 25, 2011 Collateralized $60 million senior secured revolving credit facility Abosso Goldfields Limited USD ($) | Aug. 31, 2012 Collateralized $60 million senior secured revolving credit facility Gold Fields Ghana Limited USD ($) | May 01, 2012 Collateralized $60 million senior secured revolving credit facility Gold Fields Ghana Limited USD ($) | Jan. 30, 2012 Collateralized $60 million senior secured revolving credit facility Gold Fields Ghana Limited USD ($) | Nov. 28, 2011 Collateralized $60 million senior secured revolving credit facility Gold Fields Ghana Limited USD ($) | Mar. 31, 2012 Collateralized $60 million senior secured revolving credit facility Gold Fields Ghana Limited USD ($) | Dec. 31, 2012 Collateralized $60 million senior secured revolving credit facility Gold Fields Ghana Limited USD ($) | Dec. 31, 2011 Collateralized $60 million senior secured revolving credit facility Gold Fields Ghana Limited USD ($) | Dec. 22, 2010 Collateralized Senior Secured Credit Facility Fiscal Year Twenty Twelve [Member] USD ($) | Dec. 22, 2010 Collateralized Senior Secured Credit Facility Fiscal Year Twenty Thirteen [Member] USD ($) | Dec. 31, 2012 Uncollateralized Domestic Medium Term Notes Program USD ($) | Dec. 31, 2011 Uncollateralized Domestic Medium Term Notes Program USD ($) | Dec. 31, 2010 Uncollateralized Domestic Medium Term Notes Program USD ($) | Apr. 06, 2009 Uncollateralized Domestic Medium Term Notes Program ZAR | Dec. 31, 2010 Uncollateralized Other loans USD ($) | Dec. 31, 2012 Uncollateralized Other loans USD ($) | Dec. 31, 2011 Uncollateralized Other loans USD ($) | Dec. 31, 2012 Uncollateralized Other loans ZAR | May 12, 2010 Uncollateralized Other loans Minimum USD ($) | May 12, 2010 Uncollateralized Other loans Maximum USD ($) | Dec. 31, 2012 Uncollateralized Other loans New Revolving Credit Agreement USD ($) | Dec. 09, 2009 Uncollateralized Other loans Revolving Credit Facility Matures December Seventeenth Twenty Twelve USD ($) | Dec. 09, 2009 Uncollateralized Other loans Revolving Credit Facility Matures December Seventeenth Twenty Twelve ZAR | Mar. 08, 2010 Uncollateralized Other loans Revolving Credit Facility Matures March Tenth, Twenty Thirteen USD ($) | Mar. 08, 2010 Uncollateralized Other loans Revolving Credit Facility Matures March Tenth, Twenty Thirteen ZAR | May 06, 2009 Uncollateralized Other loans Revolving Credit Facility Matures June Tenth, Twenty fourteen USD ($) | May 06, 2009 Uncollateralized Other loans Revolving Credit Facility Matures June Tenth, Twenty fourteen ZAR | Dec. 19, 2011 Uncollateralized Other loans Revolving Credit Facility Matures December Seventeen Twenty Sixteen USD ($) | Dec. 19, 2011 Uncollateralized Other loans Revolving Credit Facility Matures December Seventeen Twenty Sixteen ZAR | Dec. 31, 2012 Three Year Revolving Credit Facility | Jan. 30, 2013 Three Year Revolving Credit Facility Subsequent Event USD ($) | Nov. 28, 2012 Three Year Revolving Credit Facility GFI Joint Venture Holdings USD ($) | Dec. 31, 2012 Five Year Revolving Credit Facility | Nov. 28, 2012 Five Year Revolving Credit Facility USD ($) | Jan. 30, 2013 Five Year Revolving Credit Facility Subsequent Event USD ($) | Dec. 31, 2012 Five Year Revolving Credit Facility Condition One | Dec. 31, 2012 Five Year Revolving Credit Facility Condition Two | Dec. 31, 2012 Five Year Revolving Credit Facility Condition Three [Member]
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term revolving credit facility |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 466,700,000 | 4,000,000,000 | 1,500,000,000 |  |  |  |  |  | $ 233,400,000 | 2,000,000,000 |  | $ 249,400,000 | 2,000,000,000 |  |  |  |  | $ 750,000,000 |  |  |  | $ 250,000,000 |  |  |  |  |  |  | $ 500,000,000 |  |  |  |  |  |  |  |  |  |  |  |  | $ 500,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 200,000,000 |  |  | $ 1,000,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 60,000,000 |  |  |  |  |  |  |  |  |  |  |  | $ 43,000,000 | $ 35,000,000 |  |  |  | 10,000,000,000 |  |  |  |  | $ 450,000,000 | $ 550,000,000 | $ 1,000,000,000 | $ 116,700,000 | 1,000,000,000 | $ 58,300,000 | 500,000,000 | $ 175,000,000 | 1,500,000,000 | $ 233,400,000 | 2,000,000,000 |  |  | $ 900,000,000 |  | $ 450,000,000 |  |  |  |
Conversion of outstanding loan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 250,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maturity date |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | May 16, 2009 |  |  |  |  |  | May 16, 2012 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | Apr. 17, 2017 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | Jan. 24, 2011 |  | Sep. 15, 2011 |  |  |  |  |  |  | May 20, 2011 |  |  |  |  |  |  |  | Oct. 07, 2020 |  | Jun. 20, 2016 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | Feb. 21, 2014 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | Sep. 30, 2013 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long and short-term loans raised |  |  | 1,543,800,000 | 1,451,000,000 | 1,167,900,000 | 1,619,900,000 |  |  |  |  |  |  |  | 350,000,000 | 350,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 540,000,000 |  |  |  |  |  |  | 73,000,000 |  |  |  |  |  | 1,000,000,000 | 120,000,000 | 420,000,000 | 70,000,000 | 221,000,000 | 120,000,000 | 121,000,000 |  |  |  | 118,000,000 |  |  | 244,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 18,800,000 | 127,000,000 | 19,500,000 | 144,000,000 | 0 | 18,200,000 |  | 200,000,000 |  |  |  |  |  |  |  | 666,000,000 | 483,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 23,000,000 | 70,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 39,400,000 | 518,000,000 | 56,700,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of credit facility amount | 700,100,000 | 6,000,000,000 |  | 350,000,000 |  |  | 3,000,000,000 | 1,000,000,000 | 58,300,000 | 500,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2,000,000,000 |  |  |  | 500,000,000 |  |  |  |  |  |  |  |  | 177,000,000 |  |  |  |  |  |  |  |  |  |  | 500,000,000 |  |  |  | 141,000,000 |  | 104,000,000 |  |  |  |  |  |  |  |  |  |  | 104,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 110,000,000 | 150,000,000 |  |  |  |  | 666,000,000 | 220,000,000 |  |  |  |  |  |  |  |  |  |  |  | 666,000,000 | 220,000,000 |  |  | 50,000,000 |  |  |  |  |  |  |  |  |  |  | 0 | 50,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loan Refinance |  |  | 1,330,800,000 | 975,900,000 | 654,600,000 | 1,637,500,000 |  |  |  |  |  |  |  |  |  |  | 600,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 500,000,000 | 40,000,000 |  | 40,000,000 | 32,000,000 |  |  | 16,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 259,000,000 |  |  |  | 140,000,000 |  |  |  |  |  | 100,000,000 | 20,000,000 | 20,000,000 |  |  |  |  |  |  |  |  |  |  | 18,800,000 | 127,000,000 |  |  |  | 39,600,000 |  |  | 10,000,000 | 40,000,000 | 40,000,000 |  |  |  |  | 220,000,000 | 263,000,000 |  |  | 220,000,000 |  |  | 33,000,000 | 50,000,000 |  | 105,000,000 | 75,000,000 |  |  |  |  | 73,000,000 | 20,000,000 |  | 23,000,000 |  |  |  | 20,000,000 | 7,000,000 | 7,000,000 |  | 16,000,000 |  |  |  |  |  |  |  |  | 41,900,000 | 2,900,000 | 56,700,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of credit facility refinanced amount |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,000,000,000 | 500,000,000 |  |  | 1,000,000,000 |  |  |  |  |  |  |  |  |  |  |  | 57,000,000 |  | 59,000,000 |  |  |  |  | 500,000,000 |  |  |  |  |  |  |  | 500,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,440,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 500,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of credit interest rate description |  |  |  | The Rand bridge loan facilities bear interest at JIBAR plus a margin of 3.00% per annum for 12 months after the Spin-Off and 3.50% per annum for the last six months of the facilities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | Interest at JIBAR plus a margin of 2.50% per annum. |  |  |  |  |  |  |  |  |  |  |  |  |  | The loan under Facility B bore interest at LIBOR plus a margin of 0.30% per annum. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | The facility bore interest at LIBOR plus a margin of 1.75% per annum. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loan, margin |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0.30% |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1.60% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 5.00% | 5.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1.75% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of credit facility utilization description |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | Where the utilisation under the facility was less than or equal to 33 1/3%, a utilisation fee of 0.20% per annum would be payable on the amount of utilisations. Where the utilisation under the facility was greater than 33 1/3% and less than or equal to 66 2/3%, a utilisation fee of 0.40% per annum would be payable on the amount of utilisations. Where the utilisation under the facility was greater than 66 2/3%, a utilisation fee of 0.60% per annum would be payable on the amount of utilisations. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | Where the utilization under the facility is greater than 33 1/3% and less than or equal to 66 2/3%, a utilization fee of 0.20% per annum will be payable on the amount of utilizations. Where the utilization under the facility is greater than 66 2/3%, a utilization fee of 0.40% per annum will be payable on the amount of utilizations. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | Where the utilization under the facility was equal to or greater than 50%, a utilization fee of 0.25% per annum would be payable on the amount of utilizations. Such utilization fee was payable quarterly in arrears. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | less than or equal to 33 1/3% | greater than 33 1/3% and less than or equal to 66 2/3% | greater than 66 2/3%
Line of credit facility, utilization fee rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0.40% | 0.20% | 0.60% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0.20% | 0.40% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of credit facility commitment fee percentage |  |  |  | 35.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0.85% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0.56% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0.42% |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1.30% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0.70% |  |  | 0.65% | 0.90% |  |  |  |  |  |  |  |  |  |  |  |  | 0.90% |  |  |  |  |
Long and short-term loans raised |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 10,000,000 | 20,000,000 |  |  |  | 20,000,000 | 194,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 194,000,000 | 556,000,000 | 110,000,000 |  |  | 33,000,000 |  |  | 450,000,000 |  |  |  |  |  |  |  | 15,000,000 | 8,000,000 | 20,000,000 |  |  |  | 50,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Date of cancellation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | Feb. 15, 2013 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issued non-convertible redeemable preference shares to Rand Merchant Bank |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,200,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Dividend rate payable as a percentage of Prime rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 22.00% | 61.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outstanding preference shares repaid |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 90,000,000 | 61,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preference dividend paid |  |  | 3,100,000 |  | 1,300,000 | 5,900,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2,500,000 |  | 19,300,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Payment for redemption of preference shares, dividend |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,500,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares subject to scrip lending agreement |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loan bears interest at LIBOR plus a margin rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Principal payments schedule |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | The facility amount is repayble in 20 equal quarterly instalments of $10 million each. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of equal quarterly installments |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 20 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt maturity period |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 5 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3 years | 5 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Notes issued, face value |  |  |  | 2,372,400,000 | 1,907,700,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,000,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 4.875% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Transaction cost |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 13,600,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revolving credit facility, optional maximum borrowing capacity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,100,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of credit facility, additional interest above LIBOR |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1.20% |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2.85% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ownership interest acquired from IAMGOLD |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 18.90% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Notes issued |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Settlements |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 105,300,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Notes outstanding |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 108,900,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outstanding Borrowings |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 142,400,000 |  | 1,220,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revolving credit facility description |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $450 million syndicated revolving loan facility with an option to increase the facility to $550 million within six months from signing date. The option to increase the facility to $550 million was not exercised. The purpose of the facilities was to refinance existing facilities, for general corporate purposes and working capital. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of credit facility utilization fee percentage |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0.25% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0.20% | 0.40% | 0.60%
Revolving loan facility, commitment fee |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | The borrowers were required to pay a quarterly commitment fee of 0.70% per annum. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of credit facility, outstanding |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Term Loan and Revolving Credit Facility | 450,000,000 |  |  |  |  |  |  |  |  |  |  | 1,440,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Increase in credit facility |  |  |  |  |  |  |  |  |  |  |  | 1,440,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 720,000,000 |  |  |  | 720,000,000 |  |  |
Cancellation of credit facility |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of credit facility interest rate at LIBOR plus an initial margin |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2.45% |  |  | 2.25% |  |  |  |  |
Line of credit facility decreases | 583,400,000 | 5,000,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 175,000,000 | 1,500,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Term loan decreases |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 408,400,000 | 3,500,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of credit facility period |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 18 months |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Short-term debt reclassified to long-term |  |  |  |  |  |  |  |  |  |  |  |  | $ 142,400,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

X
- Definition Applicable Margin Rate + References No definition available. + Details
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Namespace Prefix: | gfi_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

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- Definition Contract Cancellation Date + References No definition available. + Details
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Namespace Prefix: | gfi_
Data Type: | xbrli:dateItemType
Balance Type: | na
Period Type: | duration

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- Definition Debt Instruments, Maturity Duration + References No definition available. + Details
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Namespace Prefix: | gfi_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- Definition Debt Instrument Utilization Fee Description + References No definition available. + Details
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Namespace Prefix: | gfi_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Decrease in Debt Instrument Borrowing Capacity + References No definition available. + Details
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Namespace Prefix: | gfi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Decrease in Line of Credit Facility Borrowing Capacity + References No definition available. + Details
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Namespace Prefix: | gfi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Dividends associated with redeemable preference shares that is treated as a liability + References No definition available. + Details
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Namespace Prefix: | gfi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Line Of Credit Facilities, Maturity Period + References No definition available. + Details
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Namespace Prefix: | gfi_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- Definition Line Of Credit Facility Interest Rate Applicable Margin Libor Rate + References No definition available. + Details
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Namespace Prefix: | gfi_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Line of Credit Facility, Optional Maximum Borrowing Capacity + References No definition available. + Details
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Namespace Prefix: | gfi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Line of Credit Facility, Refinanced Amount + References No definition available. + Details
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Namespace Prefix: | gfi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Line of Credit Facility, Utilization Fee Rate + References No definition available. + Details
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Namespace Prefix: | gfi_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Line of Credit, Utilization Fee Rate + References No definition available. + Details
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Namespace Prefix: | gfi_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Notes Outstanding + References No definition available. + Details
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Namespace Prefix: | gfi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Number Of Equal Quarterly Installments + References No definition available. + Details
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Namespace Prefix: | gfi_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Outstanding Borrowings Under Facility + References No definition available. + Details
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Namespace Prefix: | gfi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Percentage Of Ownership Interests Acquired + References No definition available. + Details
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Namespace Prefix: | gfi_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

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- Definition Preference Shares Issued and Classified as Debt + References No definition available. + Details
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Namespace Prefix: | gfi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Reclassification Of Short Term To Long Term Debt + References No definition available. + Details
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Namespace Prefix: | gfi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Revolving Credit Facility Cancelled Amount + References No definition available. + Details
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Namespace Prefix: | gfi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Shares subject to lending agreement + References No definition available. + Details
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Namespace Prefix: | gfi_
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Balance Type: | na
Period Type: | instant

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- Definition Stockholder Dividend Rate + References No definition available. + Details
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Namespace Prefix: | gfi_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition The amount of the original debt being converted in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4304-108586 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 32 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4332-108586 + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The percentage points added to the reference rate to compute the variable rate on the debt instrument. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
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- Definition The stated principal amount of the debt instrument at time of issuance, which may vary from the carrying amount because of unamortized premium or discount. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6584090&loc=d3e28878-108400 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 21 -Paragraph 16, 20 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
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