XML 75 R60.htm IDEA: XBRL DOCUMENT v3.7.0.1
Fair Value Measurements (Narrative) (Details) - USD ($)
$ in Millions
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Fair Value Disclosures [Abstract]      
Long-term debt, gross $ 234.6 $ 247.6 $ 240.4
Long-term debt, fair value $ 107.4 $ 36.9