Employee Benefit Plans Amounts Recognized in Other Comprehensive Income (Details) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014 Pension Benefits, U.S. Plans USD ($)	Dec. 31, 2013 Pension Benefits, U.S. Plans USD ($)	Dec. 31, 2012 Pension Benefits, U.S. Plans USD ($)	Dec. 31, 2014 Pension Benefits, Non U.S. Plans USD ($)	Dec. 31, 2013 Pension Benefits, Non U.S. Plans USD ($)	Dec. 31, 2013 Pension Benefits, Non U.S. Plans GBP (£)	Dec. 31, 2012 Pension Benefits, Non U.S. Plans USD ($)	Dec. 31, 2014 Other Postretirement Benefit Plans USD ($)	Dec. 31, 2013 Other Postretirement Benefit Plans USD ($)	Dec. 31, 2012 Other Postretirement Benefit Plans USD ($)
Accumulated Other Comprehensive Income (Loss), Net of Tax
Pension Recognized in Balance Sheet, Net of Deferred Tax	$ (222.4)	$ (549.9)		$ (26.0)	$ (27.0)			$ 18.5	$ 2.4
Defined Benefit Plan, Amortization of Net Gains (Losses)	5.2	31.7		0.4	1.2			0	0
Curtailment Effect on Accumulated Other Comprehensive Income	0	126.8		0	0			0	0
Non-operating retirement related loss due to settlement	64.4	0		0	0			0	0
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Unamortized Gain (Loss) Arising During Period, before Tax	(320.5)	344.8		1.1	(0.2)			(12.9)	29.6
Amortization of Prior Service Cost (Credit)	0	(0.1)	(0.4)	0	0		0	(1.7)	(4.9)	(2.6)
Recognized Net Gain (Loss) Due to Curtailments	0	0.7	0	0	(3.7)	(2.3)	0	0	0	0
Defined Benefit Plan, Plan Amendments	0	0		0	3.9			0	0
Change in Unrecognized Pension and Postretirement Benefit Costs, Tax Expense	87.8	(176.4)		(0.5)	(0.2)			5.1	(8.6)
Pension Recognized in Balance Sheet, Net of Deferred Tax	$ (385.5)	$ (222.4)	$ (549.9)	$ (25.0)	$ (26.0)		$ (27.0)	$ 9.0	$ 18.5	$ 2.4