XML 68 R6.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2
Consolidated Statements Of Comprehensive Income (Parenthetical) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Statement of Comprehensive Income [Abstract]      
Post retirement plans, tax $ 0.7 $ (2.1) $ (1.8)