Stock-based Compensation - Assumptions Used in Black Scholes Pricing Model for New Grants (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Volatility factor, minimum	97.71%	98.46%
Volatility factor, maximum	97.85%	101.21%
Risk-free interest rates, minimum	2.65%	0.07%
Risk-free interest rates, maximum	3.66%	1.15%
Stock Options
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Volatility factor, minimum			97.19%	56.17%
Volatility factor, maximum			102.52%	102.66%
Risk-free interest rates, minimum			1.69%	0.06%
Risk-free interest rates, maximum			3.66%	1.17%
Dividend yield	0.00%	0.00%	0.00%	0.00%
Minimum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Expected term (in years)	6 years 3 months	5 years 6 months
Minimum \| Stock Options
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Expected term (in years)			5 years 6 months	3 months
Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Expected term (in years)		6 years 3 months
Maximum \| Stock Options
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Expected term (in years)			6 years 3 months	6 years 3 months

AVEO PHARMACEUTICALS, INC. 10-Q