Fair Value (Fair Value Assets and Liabilities Measured at Fair Value on a Recurring Basis) (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Money market funds	$ 0.1	$ 0.5
Available-for-sale securities	2.5	2.5
Total Assets	4.7	6.4
Total Liabilities	1.0	0.3
Foreign Exchange Forward Contracts [Member]
Derivative Assets	2.1	3.4
Derivative Liabilities	1.0	0.3
Level 1 [Member]
Money market funds	0.1	0.5
Available-for-sale securities	2.5	2.5
Total Assets	2.6	3.0
Total Liabilities	0	0
Level 1 [Member] | Foreign Exchange Forward Contracts [Member]
Derivative Assets	0	0
Derivative Liabilities	0	0
Level 2 [Member]
Money market funds	0	0
Available-for-sale securities	0	0
Total Assets	2.1	3.4
Total Liabilities	1.0	0.3
Level 2 [Member] | Foreign Exchange Forward Contracts [Member]
Derivative Assets	2.1	3.4
Derivative Liabilities	$ 1.0	$ 0.3