XML 124 R101.htm IDEA: XBRL DOCUMENT v3.8.0.1
Accounts and Notes Receivable, Net - Additional Information (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Receivables [Abstract]      
Allowance for doubtful accounts $ 15.9 $ 13.7  
Bad debt expense $ 3.5 $ 3.4 $ 4.9