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(Loss)/Earnings Per Share (Detail) - USD ($) $ / shares in Units, $ in Millions | 12 Months Ended
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Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
BASIC (LOSS)/EARNINGS PER SHARE |  |  |  |  |
Net (loss)/earnings attributable to Gold Fields shareholders - Continuing operations |  | $ (345.0) | $ (27.2) | $ (268.4) |
Net (loss)/earnings attributable to Gold Fields shareholders - Discontinued operations |  | 0.0 | 0.0 | 20.5 | [1],[2]
Net (loss)/earnings attributable to Gold Fields shareholders |  | $ (345.0) | $ (27.2) | $ (247.9) |
Weighted average number of shares - continuing operations |  |  |  |  |
Shares outstanding - beginning of year |  | 771,416,491 | 767,160,263 | 729,536,813 |
Weighted average number of shares issued |  | 3,346,660 | 1,981,608 | 13,069,913 |
Weighted average number of shares issued at the end of the year |  | 774,763,151 | 769,141,871 | 742,606,726 |
Basic (loss)/earnings per share - Continuing operations |  | $ (0.45) | $ (0.04) | $ (0.36) |
Basic (loss)/earnings per share - Discontinued operations | [1] |  |  | $ 0.03 |
DILUTED (LOSS)/EARNINGS PER SHARE |  |  |  |  |
Net (loss)/earnings attributable to Gold Fields shareholders - Continuing operations |  | $ (345.0) | $ (27.2) | $ (268.4) |
Net (loss)/earnings attributable to Gold Fields shareholders - Discontinued operations |  | 0.0 | 0.0 | 20.5 | [1],[2]
Net (loss)/earnings attributable to Gold Fields shareholders |  | $ (345.0) | $ (27.2) | $ (247.9) |
Weighted average number of shares - continuing operations |  |  |  |  |
Weighted average number of shares issued at the end of the year |  | 774,763,151 | 769,141,871 | 742,606,726 |
Effect of dilutive securities | [3] | 0 | 0 | 0 |
Weighted Average Number of Shares Outstanding, Diluted |  | 774,763,151 | 769,141,871 | 742,606,726 |
Diluted (loss)/earnings per share - Continuing operations |  | $ (0.45) | $ (0.04) | $ (0.36) |
Diluted (loss)/earnings per share - Discontinuing operations | [2] |  |  | $ 0.03 |
[1] | Basic earnings per share from discontinued operations Basic earnings per share is calculated by dividing the profit attributable to ordinary shareholders from discontinued operations of $nil million (fiscal 2014: $nil and fiscal 2013: $20.5 million) by the weighted average number of ordinary shares in issue in fiscal 2015 of 774,763,151 (fiscal 2014: 769,141,871 and fiscal 2013: 742,606,726).
[2] | Diluted earnings per share from discontinued operations Diluted earnings per share is calculated on the basis of profit attributable to ordinary shareholders from discontinued operations of $nil million (fiscal 2014: $nil and fiscal 2013: $20.5 million) and 774,763,151 shares, being the diluted number of ordinary shares in issue in fiscal 2015 (fiscal 2014: 769,141,871 and fiscal 2013: 742,606,726).
[3] | Dilutive securities comprise the dilutive effect of share options. Refer note 18 for details of share option schemes. In fiscal 2015, 2014 and 2013, due to the loss from continuing operations, the effect of dilutive securities was not considered in the dilutive earnings per share calculation.

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