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Basis of Presentation Basis of Presentation (Out-of-period-correction) (Details) $ in Millions | 3 Months Ended
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Mar. 31, 2020 USD ($)
Operating Income (Loss) [Member] |
Quantifying Misstatement in Current Year Financial Statements [Line Items] |
Quantifying Misstatement in Current Year Financial Statements, Amount | $ 19

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- Details
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