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Stockholders' Deficit and Employee Benefit Plans (Tables) | 6 Months Ended
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Jun. 30, 2017
Retirement Benefits [Abstract] |
Schedule of Stock-based Compensation Expense Recognized | The following reflects total stock-based compensation expense recognized under all programs:
| Three Months Ended |  | Six Months Ended
June 30, |  | June 30,
2017 |  | 2016 |  | 2017 |  | 2016
Related to vesting of stock options | $ | 1.3 |  |  | $ | 0.6 |  |  | $ | 1.5 |  |  | $ | 1.3 |
Related to vesting of RSUs | 5.8 |  |  | 5.4 |  |  | 11.5 |  |  | 11.2 |
Total | $ | 7.1 |  |  | $ | 6.0 |  |  | $ | 13.0 |  |  | $ | 12.5 |

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- Definition Tabular disclosure of the allocation of equity-based compensation costs to a given line item on the balance sheet and income statement for the period. This may include the reporting line for the costs and the amount capitalized and expensed. + 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) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 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 S99 -Paragraph 1 -Subparagraph (SAB Topic 14.F) -URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809 + Details
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