Employee Benefit Plans Change in Projected Benefit Obligation Amount (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, 2014 Pension Benefits, Non U.S. Plans GBP (£)	Dec. 31, 2013 Pension Benefits, Non U.S. Plans USD ($)	Dec. 31, 2012 Pension Benefits, Non U.S. Plans USD ($)	Dec. 31, 2014 Other Postretirement Benefit Plans USD ($)	Dec. 31, 2013 Other Postretirement Benefit Plans USD ($)	Dec. 31, 2012 Other Postretirement Benefit Plans USD ($)
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Benefit Obligation at Beginning of Year	$ 1,718.7	$ 1,967.9		$ 208.7		$ 197.4		$ 165.3	$ 198.8
Service Cost	3.7	59.4	48.8	2.3		4.3	4.2	0.3	0.7	1.6
Interest Cost	89.9	86.3	84.4	9.1		8.6	8.5	7.9	8.0	9.6
Contributions by Plan Participants	0	0		0		0		4.1	3.9
Defined Benefit Plan, Actuarial Gain (Loss)	343.5	(225.9)		25.2		2.6		12.9	(30.2)
Defined Benefit Plan, Benefits Paid	(48.7)	(42.2)		(4.3)		(4.1)		(16.6)	(15.9)
Defined Benefit Plan, Curtailments	0	(126.8)		0		(3.7)		0	0	(4.2)
Benefits Paid on Settlement	(214.5)	0		0		0		0	0
Change in Foreign Exchange Rates	0	0		(14.1)		3.6		0	0
Benefit Obligation at End of Year	1,892.6	1,718.7	1,967.9	226.9		208.7	197.4	173.9	165.3	198.8
Accumulated Benefit Obligation	1,892.6	1,718.7		215.3		197.7
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair Value of Plan Assets at Beginning of Year	1,590.7	1,353.6		225.7		205.6		11.4	11.5
Defined Benefit Plan, Actual Return on Plan Assets	140.9	224.6		37.8		15.6		0.4	0.2
Employer Contributions to Defined Benefit Plan	5.3	54.7		2.3	1.4	4.0		12.0	11.7
Contributions by Plan Participants	0	0		0		0		4.1	3.9
Defined Benefit Plan Benefits Paid	(48.7)	(42.2)		(4.3)		(4.1)		(16.6)	(15.9)
Benefits Paid on Settlement	(214.5)	0		0		0		0	0
Effect of Foreign Exchange Rates on Plan Assets	0	0		(15.2)		4.6		0	0
Fair Value of Plan Assets at End of Year	1,473.7	1,590.7	1,353.6	246.3		225.7	205.6	11.3	11.4	11.5
Funded Status of Plan	$ 418.9	$ 128.0		$ (19.4)		$ (17.0)		$ 162.6	$ 153.9