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Financial Statement Information Investments in Unconsolidated Subsidiaries (Details) $ in Thousands |  | 3 Months Ended | 6 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | ---
Dec. 01, 2016 USD ($) | Jun. 30, 2020 USD ($) | Jun. 30, 2019 USD ($) | Mar. 31, 2019 USD ($) | Dec. 31, 2018 USD ($) | Jun. 30, 2020 USD ($) | Jun. 30, 2019 USD ($) | Jun. 30, 2020 SEK (kr) | Dec. 31, 2019 USD ($) | Mar. 31, 2019 SEK (kr)
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |
Equity method investments |  | $ 136,673 |  |  |  | $ 136,673 |  |  | $ 139,243 |
Equity in (losses) earnings of unconsolidated subsidiaries |  | 2,649 | $ (1,572) |  |  | 2,133 | $ 37,977 |  |  |
Impairment of equity method investments |  |  |  |  |  | 0 | 39,551 |  |  |
Share Price of the Equity Method Investment | kr |  |  |  |  |  |  |  | kr 66 |  | kr 65
Derivative Asset, Noncurrent |  | 0 |  |  |  | 0 |  |  | 3,443 |
Mekonomen [Member] |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |
Equity method investments |  | 111,000 |  |  |  | 111,000 |  |  |  |
Equity Method Investment, Ownership Percentage | 26.50% |  |  |  |  |  |  |  |  |
Payments to Acquire Equity Method Investments | $ 181,000 |  |  |  | $ 48,000 |  |  |  |  |
Equity Method Investment, Difference Between Carrying Amount and Underlying Equity |  | 5,000 |  |  |  | 5,000 |  |  |  |
Impairment of equity method investments |  |  |  | $ 40,000 |  |  |  |  |  |
Equity Method Investments, Fair Value Disclosure |  | 99,000 |  |  |  | 99,000 |  |  |  |
Mekonomen [Member] |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |
Equity Method Investment, Ownership Percentage |  |  |  |  | 26.60% |  |  |  |  |
Europe [Member] |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |
Equity method investments |  | 121,374 |  |  |  | 121,374 |  |  | 121,619 |
Equity in (losses) earnings of unconsolidated subsidiaries |  | 1,000 |  |  |  | 1,000 |  |  |  |
North America [Member] |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |
Equity method investments |  | 15,299 |  |  |  | 15,299 |  |  | $ 17,624 |
Equity in (losses) earnings of unconsolidated subsidiaries |  | $ (3,000) | $ (1,000) |  |  | $ (3,000) | $ (1,000) |  |  |

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