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Share-Based Payments (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Share-based Compensation Expense included in consolidated statements of income
Share-based compensation expense	$ 49.0	$ 46.7
Subtotal	49.5	50.4
Capitalized share-based compensation costs	(3.3)	(3.4)
Share-based compensation expense included in total costs and expenses	46.2	47.0
Income tax effect	(7.4)	(7.6)
Research and development
Share-based Compensation Expense included in consolidated statements of income
Share-based compensation expense	21.7	21.9
Selling, general and administrative
Share-based Compensation Expense included in consolidated statements of income
Share-based compensation expense	27.8	28.5
Total share-based compensation expense, net of tax
Share-based Compensation Expense included in consolidated statements of income
Share-based compensation expense	$ 38.8	$ 39.4

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- Definition

Share based compensation expense included in costs and expenses.

+ References

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- Definition

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 1
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The amount of expense, net of income tax, recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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Represents the compensation cost capitalized during the period arising from equity-based compensation arrangements (for example, shares of stock, units, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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The total recognized tax benefit related to compensation cost for equity-based payment arrangements recognized in income during the period.

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