Share-Based Payments (Details 1) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Summary of share based compensation expense associated with different programs
Share-based compensation expense	$ 183.2	$ 165.0	$ 146.2
Subtotal	207.3	252.4	255.9
Capitalized share-based compensation costs	(11.0)	(10.0)	(9.8)
Share-based compensation expense included in total costs and expenses	196.3	242.4	246.1
Stock options
Summary of share based compensation expense associated with different programs
Share-based compensation expense	0.0	0.0	0.6
Market stock units
Summary of share based compensation expense associated with different programs
Share-based compensation expense	38.1	37.4	32.8
Time-vested restricted stock units
Summary of share based compensation expense associated with different programs
Share-based compensation expense	119.0	115.4	103.5
Cash settled performance units
Summary of share based compensation expense associated with different programs
Share-based compensation expense	22.4	65.5	109.8
Performance units
Summary of share based compensation expense associated with different programs
Share-based compensation expense	13.9	21.9	0.0
Employee stock purchase plan
Summary of share based compensation expense associated with different programs
Share-based compensation expense	$ 13.9	$ 12.2	$ 9.2

Share based compensation expense included in costs and expenses.

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Summary of share-based compensation expense associated with different programs.

+ References

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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://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB TOPIC 14.F)
-URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(1)(i)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 14
-Section F

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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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-SubTopic 10
-Section 50
-Paragraph 2
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