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Share-Based Payments (Details 1) - USD ($) shares in Millions, $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2017 | Jun. 30, 2016
Summary of share based compensation expense associated with different programs |  |  |  |
Subtotal | $ 36.4 | $ 50.2 | $ 84.5 | $ 104.5
Capitalized share-based compensation costs | (2.4) | (4.4) | (5.1) | (7.5)
Share-based compensation expense included in total costs and expenses | 34.0 | 45.8 | 79.4 | 97.0
Market stock units |  |  |  |
Summary of share based compensation expense associated with different programs |  |  |  |
Share-based compensation expense | 3.0 | 7.9 | 12.6 | 21.3
Time-vested restricted stock units |  |  |  |
Summary of share based compensation expense associated with different programs |  |  |  |
Share-based compensation expense | 27.6 | 33.9 | 54.5 | 64.0
Cash settled performance shares |  |  |  |
Summary of share based compensation expense associated with different programs |  |  |  |
Share-based compensation expense | 2.5 | 4.6 | 6.0 | 4.8
Performance units |  |  |  |
Summary of share based compensation expense associated with different programs |  |  |  |
Share-based compensation expense | 1.2 | 1.3 | 5.7 | 8.2
Employee stock purchase plan |  |  |  |
Summary of share based compensation expense associated with different programs |  |  |  |
Share-based compensation expense | $ 2.1 | $ 2.5 | $ 5.7 | $ 6.2
2017 Omnibus Equity Plan |  |  |  |
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] |  |  |  |
Shares of common stock available for grant under the 2017 Omnibus Equity Plan | 8.0 |  | 8.0 |

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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=96867065&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=96867065&loc=d3e5070-113901 + Details
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- Definition 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. + Details
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- Definition 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 -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(ii) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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