Stock-Based Compensation (Summary of Stock-Based Compensation Charges) (Details) (USD $) In Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Cost of Sales - Products [Member]
Total stock-based compensation charge	$ 3.2	$ 2.4	$ 6.0	$ 4.5
Cost of Sales - Services [Member]
Total stock-based compensation charge	2.8	2.2	5.3	4.1
Total Cost of Sales [Member]
Total stock-based compensation charge	6.0	4.6	11.3	8.6
Selling, General and Administrative [Member]
Total stock-based compensation charge	21.4	20.0	41.6	37.8
Research and Development [Member]
Total stock-based compensation charge	7.4	5.7	14.0	10.7
Stock-Based Compensation Expense Before Income Taxes [Member]
Total stock-based compensation charge	34.8	30.3	66.9	57.1
Income Tax Effect [Member]
Total stock-based compensation charge	11.2	8.3	21.7	15.9
Stock-Based Compensation Expense After Income Taxes [Member]
Total stock-based compensation charge	$ 23.6	$ 22.0	$ 45.2	$ 41.2