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Discontinued Operations - Carrying Amounts of the Major Classes of Assets and Liabilities (Details) - USD ($) $ in Thousands | Jun. 30, 2021 | Dec. 31, 2020
--- | --- | ---
ASSETS |  |
Current assets held for sale | $ 1,101,193 | $ 1,133,294
LIABILITIES |  |
Current liabilities held for sale | 423,008 | 452,202
Discontinued Operations, Held-for-sale |  |
ASSETS |  |
Inventory | 1,823 | 5,746
Prepaid expenses and other | 42,562 | 47,003
Property, plant and equipment, net | 298,471 | 299,647
Intangible assets, net | 155,748 | 176,459
Goodwill | 146,383 | 146,383
Operating lease right-of-use assets | 417,754 | 421,586
Deferred charges and other assets | 38,452 | 36,470
Current assets held for sale | 1,101,193 | 1,133,294
LIABILITIES |  |
Current operating lease liabilities | 383,633 | 409,887
Accrued liabilities and other | 5,202 | 8,770
Asset retirement obligations | 34,173 | 33,545
Current liabilities held for sale | $ 423,008 | $ 452,202

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