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Mining and Income Taxation - Summary of Components of Mining and Income Tax (Detail) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Disclosure of Components of Mining and Income Tax [Line Items] |  |  |
- dividend withholding tax | $ (15.5) | $ 0.0 | $ 0.0
Total mining and income taxation | 65.9 | (173.2) | (189.5)
Major items causing the Group's income taxation to differ from the maximum South African statutory mining tax rate of 34.0% (2017: 34.0% and 2016: 34.0%) were: |  |  |
Taxation on profit before taxation at maximum South African statutory mining tax rate | 139.6 | (51.8) | (121.5)
Rate adjustment to reflect the actual realised company tax rates in South Africa and offshore | (6.7) | 19.2 | 22.4
Non-deductible share-based payments | (12.8) | (9.1) | (4.8)
Non-deductible exploration expense | (22.1) | (19.7) | (15.2)
Deferred tax assets not recognised on impairment and reversal of impairment of investments | (12.5) | 13.3 | 0.0
Impairment of South Deep goodwill | (24.4) | (94.5) | 0.0
Non-deductible interest paid | (25.5) | (24.2) | (24.2)
Non-taxable profit on disposal of investments | 0.0 | 0.0 | 0.8
Non-taxable profit on buy-back of notes | 0.0 | 0.0 | 6.0
Share of results of equity-accounted investees, net of taxation | (4.5) | (0.4) | (0.8)
Non-taxable gain on acquisition of Asanko | 17.6 | 0.0 | 0.0
Non-taxable fair value gain on Maverix warrants | 1.3 | 0.0 | 0.0
Non-taxable profit on dilution of Gold Fields' interest in Maverix | 1.4 | 0.0 | 0.0
Dividend withholding tax | (15.5) | 0.0 | 0.0
Net non-deductible expenditure and non-taxable income | (7.6) | (5.3) | (9.7)
Deferred tax raised on unremitted earnings at Tarkwa and Cerro Corona (2017: Tarkwa) | (1.1) | (9.5) | 0.0
Deferred taxation movement on Peruvian Nuevo Sol devaluation against US Dollar | (1.2) | 5.2 | (1.1)
Various Peruvian non-deductible expenses | (7.5) | (5.3) | (8.3)
Deferred tax assets not recognised at Cerro Corona (2017: Cerro Corona and Damang) | (14.9) | (12.9) | (34.9)
Utilisation of tax losses not previously recognised at Damang | 0.0 | 7.1 | 0.0
Deferred tax assets recognised at Damang (2017: Cerro Corona and Damang) | 6.5 | 19.8 | 0.0
Additional capital allowances recognised at South Deep | 69.8 | 0.0 | 0.0
Deferred tax charge on change of tax rate at South Deep (2016: Peruvian and Ghanaian operations) | (10.9) | 0.0 | 8.6
Prior year adjustments | (3.0) | (2.6) | (6.0)
Other | (0.1) | (2.5) | (0.8)
Total mining and income taxation | 65.9 | (173.2) | (189.5)
South African - Components of Mining and Income Tax [Member] |  |  |
Disclosure of Components of Mining and Income Tax [Line Items] |  |  |
- non-mining tax | 0.0 | (1.2) | (1.0)
- Company and capital gains taxation | (1.1) | (1.1) | (3.9)
- prior year adjustment - current taxation | 0.7 | 0.2 | 0.3
- deferred taxation | 208.5 | 12.1 | (9.5)
Foreign Taxation - Components of Mining and Income Tax [Member] |  |  |
Disclosure of Components of Mining and Income Tax [Line Items] |  |  |
- prior year adjustment - current taxation | (3.7) | (2.8) | (6.3)
- deferred taxation | 3.1 | 19.4 | 24.2
- current taxation | (127.9) | (199.8) | (193.3)
- dividend withholding tax | (13.7) | 0.0 | 0.0
Major items causing the Group's income taxation to differ from the maximum South African statutory mining tax rate of 34.0% (2017: 34.0% and 2016: 34.0%) were: |  |  |
Dividend withholding tax | $ (13.7) | $ 0.0 | $ 0.0

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