Condensed Consolidated Statements of Comprehensive Income (parenthetical) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Condensed Consolidated Statements of Comprehensive Income (parenthetical) [Abstract]
Adjustment to pension and other benefit plans tax impact	$ 0.2	$ 1.2	$ 0.5	$ 2.4
Unrealized gain or loss on investment tax impact	0	2.0	0	0.2
Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Tax	$ 0.3	$ 0	$ 0.2	$ 0.2