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Accounts Receivable
3 Months Ended
Mar. 31, 2015
Accounts Receivable
2. Accounts Receivable

Accounts receivable are net of allowances for doubtful accounts of $28.1 million, $19.5 million, and $26.3 million as of March 31, 2015, March 31, 2014, and December 31, 2014, respectively.