Share-Based Compensation (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Dec. 31, 2012
Stock-Based Compensation
Allocated share-based compensation expense	$ 65.6	$ 54.7
Tax benefit related to share-based compensation expense	17.9	14.6
Reduction in income	47.7	40.1
Share-based compensation cost included in inventory	1.3		1.2
Cost of goods sold
Stock-Based Compensation
Allocated share-based compensation expense	2.8	2.9
Research and development expenses
Stock-Based Compensation
Allocated share-based compensation expense	27.0	25.0
Selling, general and administrative expenses
Stock-Based Compensation
Allocated share-based compensation expense	$ 35.8	$ 26.8