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PROVISION FOR ENVIRONMENTAL REHABILITATION (Tables) | 12 Months Ended
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Dec. 31, 2011
Reconciliation of Total Liability for Environmental Rehabilitation | principally on legal and regulatory requirements. The following is a reconciliation of the total liability for environmental rehabilitation:
|  | December 31, 2011 |  |  | December 31, 2010 |  |  | June 30, 2010 |
Asset retirement obligations |  |  |  |  |  |  |  |  |  |  |  |
Opening balance |  |  | 324.4 |  |  |  | 275.7 |  |  |  | 236.9 |
Addition to liabilities |  |  | 18.7 |  |  |  | 12.3 |  |  |  | 11.9 |
Liabilities settled |  |  | (1.7 | ) |  |  | (2.1 | ) |  |  | (4.3 | )
Accretion of liability |  |  | 24.9 |  |  |  | 10.9 |  |  |  | 19.3 |
Foreign currency translation adjustment |  |  | (29.4 | ) |  |  | 27.6 |  |  |  | 11.9 |
Balance at close |  |  | 336.9 |  |  |  | 324.4 |  |  |  | 275.7 |

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- Definition Tabular disclosure of the carrying amount of a liability for asset retirement obligations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Topic 410 -SubTopic 20 -Publisher FASB -Number -Article -Subparagraph -Name Accounting Standards Codification -Paragraph 1 -Section 50 -URI http://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849 + Details
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