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Trade and other receivables
 12 Months Ended
Dec. 31, 2019
Text block [abstract]  
Trade and other receivables
18
. Trade and other receivables
 
   
2019
$m
   2018
Restated
$m		 
Current
          
   
 
 
   
 
 
 
Trade receivables
  
 
514
 
   474 
   
 
 
   
 
 
 
Other receivables
  
 
37
 
   27 
   
 
 
   
 
 
 
Prepayments
  
 
114
 
   108 
   
 
 
   
 
 
 
R
eceivables
from associates
  
 
1
 
   1 
   
 
 
   
 
 
 
   
 
666
 
   610 
   
 
 
   
 
 
 
Trade and other receivables are held at amortised cost.
Trade receivables are
non-interest-bearing
and are generally on payment terms of up to
30 days
. The fair value of trade and other receivables approximates their carrying value.
Expected credit losses
The ageing of trade and other receivables, excluding prepayments, at the end of the reporting period is:
 
   
2019
   2018 
   
Gross

$m
   
Credit loss

allowance

$m
   
Net

$m
   Gross
$m		   Credit loss
allowance
$m		  Net
$m		 
Not past due
  
 
400
 
  
 
(3
) 
  
 
397
 
   356    (1)   355 
   
 
 
   
 
 
 
  
 
 
   
 
 
   
 
 
  
 
 
 
Past due 1 to 30 days
  
 
74
 
  
 
(3
) 
  
 
71
 
   71    (1)   70 
   
 
 
   
 
 
 
  
 
 
   
 
 
   
 
 
  
 
 
 
Past due 31 to
90
 days
  
 
56
 
  
 
(5
) 
  
 
51
 
   52    (2)   50 
   
 
 
   
 
 
 
  
 
 
   
 
 
   
 
 
  
 
 
 
Past due more than 90 days
  
 
40
 
  
 
(7
) 
  
 
33
 
   34    (7)   27 
 
 
 
570
 
 
 
(18
)
 
 
 
552
 
 
 
513
 
 
 
(11
)
 
 
 
502
 
   
 
 
   
 
 
   
 
 
   
 
 
   
 
 
  
 
 
 
Trade and other receivables over 180 days past due are written off, but continue to be actively pursued. The credit risk relating to balances not past due is not deemed to be significant.
The movement in the allowance for expected lifetime credit losses of trade and other receivables during the year is as follows:
 
   
2019
$m
   2018
$m		   2017
$m		 
At 1 January
  
 
(11
) 
   (77)    (69) 
   
 
 
 
  
 
 
   
 
 
 
Adjustment arising on adoption of IFRS 9
a
  
 
—
 
   67    —   
   
 
 
 
  
 
 
   
 
 
 
Provided
  
 
(20
) 
   (28)    (15) 
   
 
 
 
  
 
 
   
 
 
 
Amounts written back
  
 
—
 
   —      2 
   
 
 
 
  
 
 
   
 
 
 
Amounts written off
  
 
14
 
   26    6 
   
 
 
 
  
 
 
   
 
 
 
Exchange adjustments
  
 
(1
) 
   1    (1) 
   
 
 
 
  
 
 
   
 
 
 
At 31 December
  
 
(18
) 
   (11)    (77) 
   
 
 
   
 
 
   
 
 
 
 
a
IFRS 9 was applied from 1 January 2018. Under the transition method chosen, comparative information was not restated.
Credit risk
The Group trades only with recognised, creditworthy third parties. It is the Group’s policy that all customers who wish to trade on credit terms are subject to credit verification procedures
.
The maximum exposure to credit risk for trade and other receivables, excluding prepayments, at the end of the reporting period by geographic region is as follows:
 
 
  
2019
$m
 
  
2018
$m
 
Americas
  
 
359
 
  
 
325
 
 
  
 
 
 
  
 
 
 
EMEAA
  
 
141
 
  
 
125
 
 
  
 
 
 
  
 
 
 
Greater China
  
 
52
 
  
 
52
 
 
  
 
 
 
  
 
 
 
 
  
 
552
 
  
 
502