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Accounts Receivable, Net (Tables)
3 Months Ended
Mar. 31, 2012
Receivables [Abstract]  
Provision for discounts and doubtful accounts
 20122011
 $’M$’M
 __________________________
As at January 1,31.123.4
Provision charged to operations65.450.4
Provision utilization(63.8)(54.3)
 __________________________
As at March 31,32.719.5
 __________________________