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Environmental Rehabilitation and Other Provisions
 12 Months Ended
Dec. 31, 2019
Disclosure of other provisions, contingent liabilities and contingent assets [Abstract]  
Environmental Rehabilitation and Other Provisions
ENVIRONMENTAL REHABILITATION AND OTHER PROVISIONS
 
US Dollars
Figures in millions
2019

 
2018

 
2017

 
 
 
 
 
 
Environmental rehabilitation obligations
 
 
 
 
 
 
 
 
 
 
 
Provision for decommissioning
 
 
 
 
 
Balance at beginning of year
237

 
286

 
279

Charge to income statement
—

 
1

 
2

Change in estimates(1)
29

 
(47
)
 
4

Unwinding of decommissioning obligation
10

 
12

 
12

Transfer to assets and liabilities held for sale
(81
)
 
—

 
(20
)
Utilised during the year
(1
)
 
(1
)
 
(2
)
Translation
2

 
(14
)
 
11

Balance at end of year
196

 
237

 
286

 
 
 
 
 
 
Provision for restoration
 
 
 
 
 
Balance at beginning of year
385

 
409

 
426

Charge to income statement
(1
)
 
2

 
8

Change in estimates(1)
50

 
(28
)
 
(17
)
Unwinding of restoration obligation
9

 
12

 
10

Transfer to assets and liabilities held for sale
(15
)
 
—

 
(3
)
Transfer to current portion
—

 
—

 
(17
)
Utilised during the year
(5
)
 
(3
)
 
(4
)
Translation
—

 
(7
)
 
6

Balance at end of year
423

 
385

 
409

 
 
 
 
 
 
Other provisions(2)
 
 
 
 
 
Balance at beginning of year
205

 
247

 
172

Charge to income statement
39

 
24

 
17

Change in estimates
27

 
18

 
15

Additions
—

 
—

 
64

Transfer to assets and liabilities held for sale
(115
)
 
—

 
—

Transfer to trade and other payables
(73
)
 
(26
)
 
(6
)
Unwinding of other provisions
6

 
7

 
1

Utilised during the year
(16
)
 
(35
)
 
(35
)
Translation
5

 
(30
)
 
19

Balance at end of year
78

 
205

 
247

 
 
 
 
 
 
Total environmental rehabilitation and other provisions
697


827


942


(1) 
The change in estimates is attributable to changes in discount rates due to changes in global economic assumptions and changes in mine plans resulting in a change in cash flows and changes in design of tailings storage facilities and in methodology following requests from the environmental regulatory authorities. These provisions are expected to unwind beyond the end of the life of mine.

(2) 
Other provisions include the long-term provision for the silicosis class action litigation of $54m (2018: $47m; 2017: $63m), the short-term portion of $11m (2018; $16m; 2017: nil) has been included in trade and other payables.