Quarterly report pursuant to Section 13 or 15(d)

Accumulated Other Comprehensive Income (Parentheticals) (Details)

v3.10.0.1
Accumulated Other Comprehensive Income (Parentheticals) (Details)
$ in Millions
6 Months Ended
Jun. 30, 2018
USD ($)
Statement Of Income And Comprehensive Income [Abstract]  
Amount expected to be reclassified into earnings $ 49.3