Share-Based Payments (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Share-based Compensation Expense included in consolidated statements of income
Subtotal	$ 50.4	$ 43.1	$ 143.6	$ 127.6
Capitalized share-based compensation costs	(3.5)	(2.5)	(9.7)	(7.6)
Share-based compensation expense included in total costs and expenses	46.9	40.6	133.9	120.0
Income tax effect	(7.7)	(10.9)	(21.8)	(31.8)
Research and development
Share-based Compensation Expense included in consolidated statements of income
Share-based compensation expense	21.0	19.5	60.5	55.7
Selling, general and administrative
Share-based Compensation Expense included in consolidated statements of income
Share-based compensation expense	29.4	23.6	83.1	71.9
Total share-based compensation expense, net of tax
Share-based Compensation Expense included in consolidated statements of income
Share-based compensation expense	$ 39.2	$ 29.7	$ 112.1	$ 88.2

Share based compensation expense included in costs and expenses.

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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

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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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.

+ References

No definition available.

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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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- Definition

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

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