Annual report pursuant to Section 13 and 15(d)

Equity Incentive Plans - Schedule of Stock Option Activity Granted (Details)

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Equity Incentive Plans - Schedule of Stock Option Activity Granted (Details) - $ / shares
shares in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock options granted (in shares) 62 9 19
Weighted average grant date fair value (in usd per share) $ 0.97 $ 1.35 $ 1.90
Stock options      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Expected term (in years) 5 years 9 months 18 days 5 years 7 months 6 days 5 years 10 months 24 days
Risk free interest rates (as a percent) 4.30% 3.60% 0.60%
Expected volatility (as a percent) 55.00% 55.00% 55.00%