Condensed Consolidated Statements of Comprehensive Income (parenthetical) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Condensed Consolidated Statements of Comprehensive Income (parenthetical) [Abstract]
Adjustment to pension and other benefit plans tax impact	$ (0.1)	$ (1.0)	$ (0.6)	$ (3.4)
Unrealized gain or loss on investment tax impact	0	0	0	0.2
Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Tax	$ (0.2)	$ 0.2	$ 0	$ 0