Quarterly report pursuant to Section 13 or 15(d)

Consolidated Statements of Comprehensive Income (Parenthetical)

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Consolidated Statements of Comprehensive Income (Parenthetical) (USD $)
In Millions, unless otherwise specified
3 Months Ended 6 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Mar. 31, 2014
Mar. 31, 2013
Consolidated Statements of Comprehensive Income        
Pension and postretirement, tax $ 0.5 $ 0.7 $ 1.5 $ 1.4
Change in net unrealized gain (loss) on derivative instruments, tax $ 0.3 $ 0.2 $ 0.1 $ 0.2