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Accounts Receivable, Net (Tables)
6 Months Ended
Jun. 30, 2013
Receivables [Abstract]  
Provision for discounts and doubtful accounts
 20132012
 $’M$’M
 __________________________
As at January 1,41.731.1
Provision charged to operations150.8135.0
Provision utilization(150.7)(129.5)
 __________________________
As at June 30,41.836.6
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