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Discontinued Operations - Carrying Amounts of the Major Classes of Assets and Liabilities (Details) - USD ($) $ in Thousands | Sep. 30, 2021 | Dec. 31, 2020
--- | --- | ---
ASSETS |  |
Current assets held for sale | $ 0 | $ 1,133,294
LIABILITIES |  |
Current liabilities held for sale | $ 0 | 452,202
Discontinued Operations, Held-for-sale |  |
ASSETS |  |
Inventory |  | 5,746
Prepaid expenses and other |  | 47,003
Property, plant and equipment, net |  | 299,647
Intangible assets, net |  | 176,459
Goodwill |  | 146,383
Operating lease right-of-use assets |  | 421,586
Deferred charges and other assets |  | 36,470
Current assets held for sale |  | 1,133,294
LIABILITIES |  |
Current operating lease liabilities |  | 409,887
Accrued liabilities and other |  | 8,770
Asset retirement obligations |  | 33,545
Current liabilities held for sale |  | $ 452,202

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