Share-Based Payments (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Share-based Compensation Expense included in consolidated statements of income
Subtotal	$ 59.5	$ 48.5
Capitalized share-based compensation costs	(2.3)	(1.2)
Share-based compensation expense included in total costs and expenses	57.2	47.3
Income tax effect	(16.6)	(14.4)
Research and development [Member]
Share-based Compensation Expense included in consolidated statements of income
Share-based compensation expense	25.2	19.7
Selling, general and administrative [Member]
Share-based Compensation Expense included in consolidated statements of income
Share-based compensation expense	34.3	28.8
Total share-based compensation expense, net of tax [Member]
Share-based Compensation Expense included in consolidated statements of income
Share-based compensation expense	$ 40.6	$ 32.9