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Share-Based Payments (Details 1) - USD ($) $ in Millions | 3 Months Ended
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Mar. 31, 2017 | Mar. 31, 2016
Summary of share based compensation expense associated with different programs |  |
Subtotal | $ 48.1 | $ 54.3
Capitalized share-based compensation costs | (2.7) | (3.1)
Share-based compensation expense included in total costs and expenses | 45.4 | 51.2
Market stock units |  |
Summary of share based compensation expense associated with different programs |  |
Share-based compensation expense | 9.6 | 13.4
Time-vested restricted stock units |  |
Summary of share based compensation expense associated with different programs |  |
Share-based compensation expense | 26.9 | 30.1
Cash settled performance shares |  |
Summary of share based compensation expense associated with different programs |  |
Share-based compensation expense | 3.5 | 0.2
Performance units |  |
Summary of share based compensation expense associated with different programs |  |
Share-based compensation expense | 4.5 | 6.9
Employee stock purchase plan |  |
Summary of share based compensation expense associated with different programs |  |
Share-based compensation expense | $ 3.6 | $ 3.7

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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://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 + Details
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