XML 107 R74.htm IDEA: XBRL DOCUMENT v3.10.0.1
Impairment Testing (Narratives) (Details)
12 Months Ended
Dec. 31, 2018
Notes to Consolidated Financial Statements [Abstract]  
After-tax discount rate used in calculation of the recoverable amount of the operating segments (nominal) 9.50%
Long-term growth rate 0% - 2%