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Chapter 11 Proceedings and Ability to Continue as a Going Concern - Schedule of Reorganization Items (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019
Reorganizations [Abstract] |  |  |  |
Write-off of unamortized debt discounts, premiums and issuance costs | $ 447.9 |  | $ 447.9 | $ 0.0
Reorganization items (non-cash) |  |  | 447.9 |
DIP facility fees |  |  | 23.8 |
Professional fees |  |  | 25.8 |
Reorganization Items (Fees) |  |  | 49.6 |
Total reorganization items, net | $ 497.5 | $ 0.0 | 497.5 | $ 0.0
Reorganization items (fees) unpaid |  |  | 25.8 |
Reorganization items (fees) paid |  |  | $ 23.8 |

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- Definition Amount of reorganization items related to legal and advisory professional fees related to entities in bankruptcy. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 852 -SubTopic 10 -Section 45 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=116635682&loc=d3e55730-112764 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 852 -SubTopic 10 -Section 55 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=84165509&loc=d3e56145-112766 + Details
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