Fair Value (Fair Value Assets and Liabilities Measured at Fair Value on a Recurring Basis) (Details) - USD ($) $ in Millions	Sep. 30, 2015	Dec. 31, 2014
Available-for-sale securities	$ 2.8	$ 2.7
Total Assets	6.1	3.3
Total Liabilities	3.3	5.0
Foreign Exchange Forward Contracts [Member]
Foreign exchange forward contracts	3.3	0.6
Foreign exchange forward contracts	3.3	5.0
Level 1 [Member]
Available-for-sale securities	2.8	2.7
Total Assets	2.8	2.7
Total Liabilities	0.0	0.0
Level 1 [Member] | Foreign Exchange Forward Contracts [Member]
Foreign exchange forward contracts	0.0	0.0
Foreign exchange forward contracts	0.0	0.0
Level 2 [Member]
Available-for-sale securities	0.0	0.0
Total Assets	3.3	0.6
Total Liabilities	3.3	5.0
Level 2 [Member] | Foreign Exchange Forward Contracts [Member]
Foreign exchange forward contracts	3.3	0.6
Foreign exchange forward contracts	$ 3.3	$ 5.0