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Carrying Value of Equity Investment in Rand Refinery Limited (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Schedule of Equity Method Investments [Line Items]
Closing balance	$ 237.5	$ 254.4
Rand Refinery Limited
Schedule of Equity Method Investments [Line Items]
Opening balance	23.7	12.9
Share of profit after taxation for continuing operations		0.7
Share of profit after taxation for discontinued operations	0.9	11.3
Spin-off of Sibanye Gold	(22.4)
Reclassification to unlisted investments	(2.5)
Translation	0.3	(1.2)
Closing balance		$ 23.7

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Carrying value of equity investment transferred upon spin-off of discontinued operations.

+ References

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- Definition

Reflects the net gain (loss) from converting equity method investment of consolidated entities which are stated in a foreign currency into the currency used in the financial statements.

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- Definition

This item represents the continuing operations' proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. This item includes income or expense related to stock-based compensation based on the investor's grant of stock to employees of an equity method investee.

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This item represents the discontinued operations' proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. This item includes income or expense related to stock-based compensation based on the investor's grant of stock to employees of an equity method investee.

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Transfer of investments that previously qualified for equity accounting but no longer meets the criteria to the line item unlisted investments.

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- Definition

This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.12)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 323

-SubTopic 10

-Section 45

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=16385135&loc=d3e33749-111570

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