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Recent Authoritative Accounting Guidance (Details) - USD ($) $ in Millions | Jan. 01, 2019 | Sep. 30, 2019 | Jul. 01, 2019
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Accounting Policies [Abstract] |  |  |
Right of use assets | $ 54.6 | $ 39.6 |
Lease liabilities | 54.6 | $ 39.6 |
Fresh-Start Adjustment, Increase (Decrease), Capital Lease Obligations, Noncurrent |  |  | $ 15.0
Amount of held to maturity reclassified | $ 281.1 |  |

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- Definition Amount of investment in debt security, measured at amortized cost, transferred to investment in debt security, measured at fair value, with change in fair value recognized in other comprehensive income (available-for-sale) and net income (trading). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118939692&loc=d3e27405-111563 + Details
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