Stockholders' Equity - Additional Information (Details) $ / shares in Units, $ in Millions	3 Months Ended
	Sep. 30, 2021 USD ($) $ / shares shares
Class Of Stock [Line Items]
Unamortized stock-based compensation expense | $	$ 120.0
Weighted-average period over which unrecognized compensation cost is expected to be recognized	2 years
Class of warrant exercise price | $ / shares	$ 4.50
Class of warrant exercisable period	5 years
Class of warrant exercisable period ends	2023-09
Warrants issued or issuable	0
2019 Employee Stock Purchase Plan
Class Of Stock [Line Items]
Unamortized stock-based compensation expense | $	$ 3.9
Weighted-average period over which unrecognized compensation cost is expected to be recognized	12 months
Expected volatility of option granted	75.98%
Risk-free interest rate, minimum	0.06%
Risk-free interest rate, maximum	0.08%
Expected dividend yield	0.00%
Minimum | 2019 Employee Stock Purchase Plan
Class Of Stock [Line Items]
Expected term of stock options granted	5 months 1 day
Maximum
Class Of Stock [Line Items]
Issuance of warrants	5,600,000
Maximum | 2019 Employee Stock Purchase Plan
Class Of Stock [Line Items]
Expected term of stock options granted	1 year
Restricted Stock Units
Class Of Stock [Line Items]
Unamortized stock-based compensation expense | $	$ 391.4
Weighted-average period over which unrecognized compensation cost is expected to be recognized	3 years 2 months 12 days
Number of other than options granted	1,847,041
Weighted grant-date fair value | $ / shares	$ 204.96
Restricted Stock Units | Minimum
Class Of Stock [Line Items]
Vest over requisite period	1 year
Restricted Stock Units | Maximum
Class Of Stock [Line Items]
Vest over requisite period	4 years
Invoice2go 2014 Plan
Class Of Stock [Line Items]
Equity-based awards granted	0