v3.25.2
Summary of Significant Accounting Policies - Schedule of Earnings Per Share, Basic and Diluted (Detail) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Numerator:        
Net loss $ (177,530) $ (37,561) $ (209,782) $ (77,153)
Less: Net loss attributable to noncontrolling interests 692 0 692 0
Net loss attributable to IonQ, Inc. $ (176,838) $ (37,561) $ (209,090) $ (77,153)
Denominator:        
Weighted average shares used in computing net loss per share attributable to IonQ, Inc. common stockholders - Basic 250,967,455 211,637,479 239,924,680 209,898,459
Net loss per share attributable to IonQ, Inc. common stockholders - Basic $ (0.7) $ (0.18) $ (0.87) $ (0.37)
Weighted average shares used in computing net loss per share attributable to IonQ, Inc. common stockholders - Diluted 250,967,455 211,637,479 239,924,680 209,898,459
Net loss per share attributable to IonQ, Inc. common stockholders - Diluted $ (0.7) $ (0.18) $ (0.87) $ (0.37)