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Financial Statement Information Net Assets Held for Sale (Details) | 3 Months Ended | 6 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Jun. 30, 2020 USD ($) | Jun. 30, 2019 USD ($) | Jun. 30, 2020 USD ($) | Jun. 30, 2019 USD ($) | May 31, 2020 USD ($) | Dec. 31, 2019 USD ($) | Dec. 31, 2019 EUR (€)
Impaired Long-Lived Assets Held and Used [Line Items] |  |  |  |  |  |  |
Reedemable NCI, Put Option |  |  |  |  |  | $ 24,000,000 | € 21,000,000
Redeemable NCI, Call Option |  |  |  |  |  | 26,000,000 | € 23,000,000
Redeemable noncontrolling interest | $ 24,077,000 |  | $ 24,077,000 |  |  | 24,077,000 |
Goodwill | 4,377,350,000 |  | 4,377,350,000 |  |  | 4,406,535,000 |
Disposal Group, Including Discontinued Operation, Assets |  |  |  |  |  | 19,000,000 |
Disposal Group, Including Discontinued Operation, Liabilities |  |  |  |  |  | $ 9,000,000 |
Disposal Group, Including Discontinued Operation, Revenue |  |  |  |  | $ 78,000,000 |  |
Loss on disposal of businesses and impairment of net assets held for sale | $ 2,485,000 | $ 33,497,000 | $ 2,236,000 | $ 48,520,000 |  |  |

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