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Goodwill and Other Intangible Assets - Schedule of Estimated Future Amortization (Detail) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Estimated future amortization    
2021 $ 197,104  
2022 190,981  
2023 178,672  
2024 176,685  
2025 174,900  
Thereafter 2,048,070  
Finite-lived intangible assets, net $ 2,966,412 $ 3,148,194