Fair Value Measurements - Summary of Change in Fair Value of Derivative Warrant Liabilities (Detail)	12 Months Ended
	Dec. 31, 2021 USD ($)
Fair Value Net Derivative Asset Liability Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Derivative warrant liabilities, ending balance	$ 3,429,310
Level 3
Fair Value Net Derivative Asset Liability Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Change in fair value of derivative liabilities - Level 3	(442,760)
Level 3 \| Public Warrants
Fair Value Net Derivative Asset Liability Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Issuance of Public and Private Warrants	5,000,000
Level 3 \| Public Warrants \| Over-Allotment Option
Fair Value Net Derivative Asset Liability Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Issuance of Public and Private Warrants	633,100
Level 3 \| Private Placement Warrants
Fair Value Net Derivative Asset Liability Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Issuance of Public and Private Warrants	3,640,000
Level 3 \| Private Placement Warrants \| Over-Allotment Option
Fair Value Net Derivative Asset Liability Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Issuance of Public and Private Warrants	332,070
Level 1 \| Public Warrants
Fair Value Net Derivative Asset Liability Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Transfer of Public Warrants to Level 1 measurement	$ (5,733,100)

Supernova Partners Acquisition Co III, Ltd. 10-K