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v3.19.1

Accounting policies (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2018
Disclosure of initial application of standards or interpretations [abstract] |
Schedule of useful lives of property, plant and equipment |
|  | Years of
|  | Estimated
|  | Useful
|  | Life
Properties for own use |  | 25-50
Plant and machinery |  | 8-20
Tools |  | 12.5-15
Furniture and fixtures |  | 10-15
Computer hardware |  | 4-8
Transport equipment |  | 10-15

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- Definition Tabular disclosure of information regarding the useful lives of property, plant and equipment. + References No definition available. + Details
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- References No definition available. + Details
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