Unaudited Condensed Consolidated Statements of Comprehensive Income (Parenthetical) (Parentheticals) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Net change in unrealized holding (losses) gains on available-for-sale securities, tax (benefit) provision	$ (0.2)	$ 1.8	$ (1.0)	$ 1.7
Net unrealized (losses) gains on cash flow hedges, tax (benefit) provision	(104.2)	6.7	1.9	(221.3)
Postretirement plans and workers' compensation obligations, tax provision	$ 4.0	$ 8.3	$ 1.8	$ 25.0