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Share-Based Payments (Details 1) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2015 | Jun. 30, 2014 | Jun. 30, 2015 | Jun. 30, 2014
Summary of share based compensation expense associated with different programs |  |  |  |
Subtotal | $ 48.3 | $ 58.1 | $ 139.3 | $ 134.7
Capitalized share-based compensation costs | (2.2) | (2.6) | (5.6) | (5.2)
Share-based compensation expense included in total costs and expenses | 46.1 | 55.5 | 133.7 | 129.5
Market stock units |  |  |  |
Summary of share based compensation expense associated with different programs |  |  |  |
Share-based compensation expense | 9.1 | 8.2 | 26.1 | 23.1
Time-vested restricted stock units |  |  |  |
Summary of share based compensation expense associated with different programs |  |  |  |
Share-based compensation expense | 31.8 | 29.2 | 63.7 | 58.4
Cash settled performance shares |  |  |  |
Summary of share based compensation expense associated with different programs |  |  |  |
Share-based compensation expense | 3.2 | 14.0 | 27.0 | 35.4
Performance units |  |  |  |
Summary of share based compensation expense associated with different programs |  |  |  |
Share-based compensation expense | 1.2 | 4.0 | 14.4 | 10.3
Employee stock purchase plan |  |  |  |
Summary of share based compensation expense associated with different programs |  |  |  |
Share-based compensation expense | $ 3.0 | $ 2.7 | $ 8.1 | $ 7.5

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