XML 18 R28.htm IDEA: XBRL DOCUMENT v3.3.0.814
Accounts Receivable - Schedule of Accounts Receivable, Net (Detail) - USD ($)
$ in Thousands
Sep. 30, 2015
Dec. 31, 2014
Receivables [Abstract]    
Gross accounts receivable $ 1,376,939 $ 1,200,958
Allowance for contractual adjustments and uncollectibles (970,178) (848,767)
Accounts receivable, net $ 406,761 $ 352,191