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Income Taxes (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2021 | Mar. 31, 2020
Valuation Allowance [Line Items] |  |
Effective tax rates | (50.00%) | (3.00%)
Goodwill impairment | $ 0 | $ 54
U.K. Gaming |  |
Valuation Allowance [Line Items] |  |
Goodwill impairment | $ 54 |

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