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Cost of Sales
 12 Months Ended
Dec. 31, 2019
Cost of Sales [Abstract]  
Cost of Sales
COST OF SALES
 
US Dollars
Figures in millions
2019

 
2018

 
2017

Cash operating costs
1,831

 
1,850

 
1,756

Royalties
137

 
133

 
111

Other cash costs
13

 
13

 
14

Total cash costs
1,981

 
1,996

 
1,881

Retrenchment costs
4

 
4

 
6

Rehabilitation and other non-cash costs
53

 
17

 
16

Amortisation of tangible assets (notes 32 and 36)
538

 
553

 
685

Amortisation of right of use assets(1) (notes 32 and 36)
42

 
—

 
—

Amortisation of intangible assets (notes 32 and 36)
3

 
5

 
5

Inventory change
5

 
9

 
14

 
2,626

 
2,584

 
2,607


(1) Amortisation relating to right of use assets as recognised in accordance with IFRS 16 Leases.