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Debt - Schedule of Aggregate Maturities of Outstanding Debt Obligations in Subsequent Years (Parenthetical) (Details) - USD ($) $ in Millions | Dec. 31, 2018 | Dec. 31, 2017
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Debt Disclosure [Abstract] |  |
Discount on debt issuance | $ 5.8 |
Deferred financing costs | $ 2.3 | $ 3.1

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