Accounts and Other Receivables and Concentrations of Credit Risk (Tables)
|12 Months Ended|
Dec. 31, 2016
|Schedule of Accounts and Other Receivables Net of Allowance for Doubtful Accounts||
Tabular disclosure of the various types of trade accounts and notes receivable and for each the gross carrying value, allowance, and net carrying value as of the balance sheet date. Presentation is categorized by current, noncurrent and unclassified receivables.
Reference 1: http://www.xbrl.org/2003/role/presentationRef