Restructuring Costs (Restructuring Reserves by Cost Type) (Details) - USD ($) $ in Millions	12 Months Ended			51 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2015
Restructuring Reserve [Roll Forward]
Restructuring Charges	$ 77.2	$ 52.8	$ 110.3
Project Renewal [Member]
Restructuring Reserve [Roll Forward]
Beginning Balance	40.3	67.4
Restructuring Charges	74.0	53.8	113.7	$ 309.8
Restructuring Reserve Settled	(47.7)	(80.9)
Ending Balance	66.6	40.3	67.4	66.6
Project Renewal [Member] | Facility Exit Costs and Other [Member]
Restructuring Reserve [Roll Forward]
Beginning Balance	0.0	0.0
Restructuring Charges	6.7	7.5	5.7	27.4
Restructuring Reserve Settled	(6.7)	(7.5)
Ending Balance	0.0	0.0	0.0	0.0
Project Renewal [Member] | Employee Severance, Termination Benefits And Relocation Costs [Member]
Restructuring Reserve [Roll Forward]
Beginning Balance	22.8	60.3
Restructuring Charges	52.4	25.2	93.4	218.5
Restructuring Reserve Settled	(25.9)	(62.7)
Ending Balance	49.3	22.8	60.3	49.3
Project Renewal [Member] | Contract Termination [Member]
Restructuring Reserve [Roll Forward]
Beginning Balance	17.5	7.1
Restructuring Charges	14.9	21.1	14.6	63.9
Restructuring Reserve Settled	(15.1)	(10.7)
Ending Balance	$ 17.3	$ 17.5	$ 7.1	$ 17.3