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Share-Based Payments (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Share-based Compensation Expense included in consolidated statements of income
Share-based compensation expense	$ (55.8)	$ (49.5)	$ (128.4)	$ (118.8)
Subtotal	59.4	45.5	137.9	121.9
Capitalized share-based compensation costs	(1.7)	(1.5)	(4.3)	(3.0)
Share-based compensation expense included in total costs and expenses	57.7	44.0	133.6	118.9
Income tax effect	(10.9)	(7.0)	(24.9)	(20.3)
Research and development
Share-based Compensation Expense included in consolidated statements of income
Share-based compensation expense	19.1	15.2	52.7	48.5
Selling, general and administrative
Share-based Compensation Expense included in consolidated statements of income
Share-based compensation expense	40.3	30.3	85.2	73.4
Total share-based compensation expense, net of tax
Share-based Compensation Expense included in consolidated statements of income
Share-based compensation expense	$ 46.8	$ 37.0	$ 108.7	$ 98.6

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Share based compensation expense included in costs and expenses.

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Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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