| United States Dollar | |||||||
| Figures in millions unless otherwise stated | 2018 | 2017 | 2016 | ||||
| 32. | RETIREMENT BENEFITS | ||||||
| All employees are members of various defined contribution retirement schemes. | |||||||
| Contributions to the various retirement schemes are fully expensed during the period in which they are incurred. | |||||||
| Retirement benefit costs | 32.8 | 33.7 | 30.0 | ||||