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Fair Value Measurements - Summary of Non-Recurring Fair Value Measurement (Detail) - USD ($) $ in Thousands | 9 Months Ended |
--- | --- | ---
Sep. 30, 2020 | Sep. 30, 2019 | Dec. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Property and equipment, net | $ 818,333 |  | $ 836,206
Goodwill, Net Carrying Value | 3,744,269 |  | 3,753,493
Other intangible assets, Net Carrying Value | 1,333,917 |  | 1,379,546
Other intangible assets, Total Impairment Charges |  | $ 89,000 |
Net Carrying Value | 16,347,076 |  | $ 16,197,196
Total Impairment Charges | 75,171 | 89,037 |
Fair Value Measurements, Non-recurring [Member] |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Property and equipment, net | 9,565 |  |
Property and equipment, Total Impairment Charges | 21,663 |  |
Goodwill, Net Carrying Value | 431,389 |  |
Goodwill, Total Impairment Charges | 25,000 |  |
Other intangible assets, Net Carrying Value | 12,842 | 16,000 |
Other intangible assets, Total Impairment Charges | 28,508 | 89,037 |
Net Carrying Value | 453,796 |  |
Total Impairment Charges | 75,171 |  |
Fair Value Measurements, Non-recurring [Member] | Level 3 [Member] |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Property and equipment, Fair Value Measured and Recorded Using | 9,565 |  |
Goodwill, Fair Value Measured and Recorded Using | 431,389 |  |
Other intangible assets, Fair Value Measured and Recorded Using | 12,842 | $ 16,000 |
Fair Value Measured and Recorded Using | $ 453,796 |  |

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