General form of registration statement for all companies including face-amount certificate companies

Goodwill and Intangible Assets - Summary Of Weighted Average Remaining Useful Lives Per Intangible Asset Category (Detail)

v3.21.2
Goodwill and Intangible Assets - Summary Of Weighted Average Remaining Useful Lives Per Intangible Asset Category (Detail)
 12 Months Ended
Dec. 31, 2020
Customer Relationships [Member]  
Finite-Lived Intangible Assets [Line Items]  
Weighted average remaining useful lives per intangible asset category 6 years 8 months 12 days
Technology [Member]  
Finite-Lived Intangible Assets [Line Items]  
Weighted average remaining useful lives per intangible asset category 4 years 1 month 6 days
Carrier contracts [Member]  
Finite-Lived Intangible Assets [Line Items]  
Weighted average remaining useful lives per intangible asset category 4 years 10 months 24 days
Trademarks [Member]  
Finite-Lived Intangible Assets [Line Items]  
Weighted average remaining useful lives per intangible asset category 5 years 1 month 6 days
Internally developed and acquired computer software [Member]  
Finite-Lived Intangible Assets [Line Items]  
Weighted average remaining useful lives per intangible asset category 5 years 2 months 12 days