Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements - Held To Maturity Securities (Detail)

v3.21.2
Fair Value Measurements - Held To Maturity Securities (Detail) - USD ($)
Jun. 30, 2021
Dec. 31, 2020
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Amortized Cost $ 400,185,630 $ 400,085,021
US Treasury Securities [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Amortized Cost 400,085,021 400,085,021
Gross Holding Gain 5,549 5,549
Fair Value $ 400,090,570 $ 400,090,570