Acquisitions, Goodwill and Other Intangible Assets - Summary of Goodwill and Intangible Assets (Parenthetical) (Detail)  | 
3 Months Ended | 12 Months Ended | 
|---|---|---|
Mar. 31, 2021  | 
Dec. 31, 2020  | 
|
| Business Combinations [Abstract] | ||
| Weighted average amortization intangible assets | 5 years 6 months 10 days | 5 years 6 months 25 days | 
| X | ||||||||||
- Definition Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
  | 
| X | ||||||||||
- References No definition available. 
  |