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PROVISION FOR POST-RETIREMENT HEALTH CARE COSTS (Tables) | 12 Months Ended
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Dec. 31, 2011
Net Periodic Benefit Cost by Gold Fields Group, Excluding South Deep |
|  | December 31, 2011 |  |  | December 31, 2010 |  |  | June 30, 2010 |
The net periodic benefit cost is explained as follows: |  |  |  |  |  |  |  |  |  |  |  |
Service costs |  |  | 0.1 |  |  |  | (0.1 | ) |  |  | 0.9 |
Net periodic benefit cost |  |  | 0.1 |  |  |  | (0.1 | ) |  |  | 0.9 |
Accrued Post-Retirement Health Care Costs |
|  | December 31, 2011 |  |  | December 31, 2010 |  |  | June 30, 2010 |
Gold Fields Group (excluding South Deep) accrued post-retirement health care costs (a) |  |  | 2.1 |  |  |  | 2.6 |  |  |  | 2.6 |
South Deep accrued post-retirement health care costs (b) |  |  | — |  |  |  | 0.1 |  |  |  | 0.2 |
Gold Fields Group accrued post-retirement health care costs |  |  | 2.1 |  |  |  | 2.7 |  |  |  | 2.8 |
Net Periodic Benefit Cost by South Deep |
|  | December 31, 2011 |  |  | December 31, 2010 |  |  | June 30, 2010 |
The net periodic benefit cost is explained as follows: |  |  |  |  |  |  |  |  |  |  |  |
Service costs |  |  | — |  |  |  | — |  |  |  | — |
Net periodic benefit cost |  |  | — |  |  |  | — |  |  |  | — |
Gold Fields Group (excluding South Deep) |
Funded Status and Amounts Recognized for Post-Retirement Health Care Costs | The following table sets forth the funded status and amounts recognized by the Group (excluding South Deep) for post-retirement health care costs:
|  | December 31, 2011 |  |  | December 31, 2010 |  |  | June 30, 2010 |
Actuarial present value |  |  | 2.1 |  |  |  | 2.6 |  |  |  | 2.6 |
Plan assets at fair value |  |  | — |  |  |  | — |  |  |  | — |
Accumulated benefit obligation in excess of plan assets |  |  | 2.1 |  |  |  | 2.6 |  |  |  | 2.6 |
Prior service costs |  |  | — |  |  |  | — |  |  |  | — |
Unrecognized net (gain)/loss |  |  | — |  |  |  | — |  |  |  | — |
Post-retirement health care liability |  |  | 2.1 |  |  |  | 2.6 |  |  |  | 2.6 |
Reconciliation of Benefit Obligation for Post Retirement Health Care Cost |
|  | December 31, 2011 |  |  | December 31, 2010 |  |  | June 30, 2010 |
Actuarial present value |  |  | — |  |  |  | 0.1 |  |  |  | 0.2 |
Plan assets at fair value |  |  | — |  |  |  | — |  |  |  | — |
Accumulated benefit obligation in excess of plan assets |  |  | — |  |  |  | 0.1 |  |  |  | 0.2 |
Prior service costs |  |  | — |  |  |  | — |  |  |  | — |
Unrecognized net (gain)/loss |  |  | — |  |  |  | — |  |  |  | — |
Post-retirement health care liability |  |  | — |  |  |  | 0.1 |  |  |  | 0.2 |
The following is a reconciliation of the benefit obligation: |  |  |  |  |  |  |  |  |  |  |  |
Balance at beginning of year |  |  | 0.1 |  |  |  | 0.2 |  |  |  | 0.4 |
Service costs |  |  | — |  |  |  | — |  |  |  | — |
Contributions paid |  |  | (0.1 | ) |  |  | (0.1 | ) |  |  | (0.1 | )
Release of cross subsidization liability |  |  | — |  |  |  | — |  |  |  | (0.2 | )
Foreign currency translation adjustment |  |  | — |  |  |  | — |  |  |  | 0.1 |
Balance at end of year |  |  | — |  |  |  | 0.1 |  |  |  | 0.2 |
South Deep Gold Mine |
Funded Status and Amounts Recognized for Post-Retirement Health Care Costs | The following table sets forth the funded status and amounts recognized by the Group for post-retirement health care costs:
|  | December 31, 2011 |  |  | December 31, 2010 |  |  | June 30, 2010 |
Actuarial present value |  |  | — |  |  |  | 0.1 |  |  |  | 0.2 |
Plan assets at fair value |  |  | — |  |  |  | — |  |  |  | — |
Accumulated benefit obligation in excess of plan assets |  |  | — |  |  |  | 0.1 |  |  |  | 0.2 |
Prior service costs |  |  | — |  |  |  | — |  |  |  | — |
Unrecognized net (gain)/loss |  |  | — |  |  |  | — |  |  |  | — |
Post-retirement health care liability |  |  | — |  |  |  | 0.1 |  |  |  | 0.2 |
Reconciliation of Benefit Obligation for Post Retirement Health Care Cost |
|  | December 31, 2011 |  |  | December 31, 2010 |  |  | June 30, 2010 |
Actuarial present value |  |  | 2.1 |  |  |  | 2.6 |  |  |  | 2.6 |
Plan assets at fair value |  |  | — |  |  |  | — |  |  |  | — |
Accumulated benefit obligation in excess of plan assets |  |  | 2.1 |  |  |  | 2.6 |  |  |  | 2.6 |
Prior service costs |  |  | — |  |  |  | — |  |  |  | — |
Unrecognized net (gain)/loss |  |  | — |  |  |  | — |  |  |  | — |
Post-retirement health care liability |  |  | 2.1 |  |  |  | 2.6 |  |  |  | 2.6 |
The following is a reconciliation of the benefit obligation: |  |  |  |  |  |  |  |  |  |  |  |
Balance at beginning of year |  |  | 2.6 |  |  |  | 2.6 |  |  |  | 11.0 |
Service costs |  |  | 0.1 |  |  |  | (0.1 | ) |  |  | 0.9 |
Contributions paid |  |  | (0.2 | ) |  |  | (0.5 | ) |  |  | (0.2 | )
Release of cross subsidization liability |  |  | — |  |  |  | — |  |  |  | (9.7 | )
Foreign currency translation adjustment |  |  | (0.4 | ) |  |  | 0.6 |  |  |  | 0.6 |
Balance at end of year |  |  | 2.1 |  |  |  | 2.6 |  |  |  | 2.6 |

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- Definition Tabular disclosure of the components of net benefit costs for pension plans and/or other employee benefit plans including service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) recognized due to settlements or curtailments relating specifically to South Deep. + References No definition available. + Details
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- Definition Tabular disclosure of benefit obligations including accumulated benefit obligation and projected benefit obligation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Topic 715 -SubTopic 20 -Publisher FASB -Number -Article -Subparagraph (e) -Name Accounting Standards Codification -Paragraph 1 -Section 50 -URI http://asc.fasb.org/extlink&oid=6962843&loc=d3e1928-114920 + Details
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- Definition Tabular disclosure of health care organization trust fund, including whether the fund is legally revocable or irrevocable, the amount of assets expected to be liquidated to pay malpractice claims classified as current assets, noncurrent assets of the fund, revenues, administrative expenses and any other pertinent facts about the trust fund. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Audit and Accounting Guide (AAG) -Number AAG-HCO -Chapter 8 -Paragraph 21, 22, 23 -IssueDate 2006-05-01 -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 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 954 -SubTopic 810 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6875368&loc=d3e10314-115658 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 954 -SubTopic 810 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6923141&loc=d3e10459-115659 + Details
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