Estimated Useful Lives of Assets (Parenthetical) (Detail) - USD ($) $ in Thousands |
Dec. 31, 2020 |
Dec. 31, 2019 |
|---|---|---|
| Property, Plant and Equipment [Line Items] | ||
| Accumulated depreciation and amortization | $ 1,788,041 | $ 1,612,990 |
| Property Under Finance Lease | ||
| Property, Plant and Equipment [Line Items] | ||
| Accumulated depreciation and amortization | $ 47,961 | $ 36,384 |
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- Definition Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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- Details
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