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v3.20.1

Consolidated Statements of Cash Flows (Parenthetical) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Statement of Cash Flows [Abstract] |  |  |
Accretion of interest on bond | $ 14.5 | $ 13.5 | $ 11.8

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- Definition Accretion of interest on bond + References No definition available. + Details
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Balance Type: | debit
Period Type: | duration

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- References No definition available. + Details
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