Quarterly report pursuant to Section 13 or 15(d)

Consolidated Statements of Comprehensive Income (Parenthetical)

v3.7.0.1
Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Statement of Comprehensive Income [Abstract]        
Pension and postretirement, tax $ 0.4 $ 0.4 $ 5.4 $ 1.6
Change in net unrealized gain (loss) on derivative instruments, tax $ 0.3 $ 0.5 $ 1.1 $ 0.6