Share-Based Compensation (Components of Compensation Expense) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Stock-Based Compensation
Total share-based compensation expense	$ 447.6	$ 325.8	$ 231.0
Tax benefit related to share-based compensation expense	129.3	94.5	61.3
Reduction in income	318.3	231.3	169.7
Non-qualified stock options
Stock-Based Compensation
Total share-based compensation expense	276.3	197.6	155.2
Cost of goods sold
Stock-Based Compensation
Total share-based compensation expense	26.2	18.5	12.4
Research and development
Stock-Based Compensation
Total share-based compensation expense	196.5	144.7	102.4
Selling, general and administrative
Stock-Based Compensation
Total share-based compensation expense	$ 224.9	$ 162.6	$ 116.2