Share-Based Payments (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Share-based Compensation Expense included in consolidated statements of income
Share-based compensation expense	$ (168.7)	$ (138.1)	$ 169.4
Subtotal	181.6	169.7	204.4
Capitalized share-based compensation costs	(11.5)	(9.6)	(14.6)
Share-based compensation expense included in total costs and expenses	170.1	160.1	189.8
Income tax effect	(27.5)	(42.8)	(54.0)
Research and development
Share-based Compensation Expense included in consolidated statements of income
Share-based compensation expense	(75.8)	(74.0)	(84.5)
Selling, general and administrative
Share-based Compensation Expense included in consolidated statements of income
Share-based compensation expense	(105.8)	(95.7)	(121.7)
Restructuring charges
Share-based Compensation Expense included in consolidated statements of income
Share-based compensation expense	0.0	0.0	1.8
Total share-based compensation expense, net of tax
Share-based Compensation Expense included in consolidated statements of income
Share-based compensation expense	$ (142.6)	$ (117.3)	$ (135.8)

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
-Topic 718
-SubTopic 10
-Section 50
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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.

+ References

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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.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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