{"cik":1930419,"taxonomy":"us-gaap","tag":"EarningsPerShareBasic","label":"Earnings Per Share, Basic","description":"The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.","entityName":"ALR Technologies SG Ltd.","units":{"USD/shares":[{"start":"2022-01-01","end":"2022-12-31","val":-0.02,"accn":"0001903596-25-000224","fy":2024,"fp":"FY","form":"20-F","filed":"2025-05-01"},{"start":"2022-01-01","end":"2022-12-31","val":-0.02,"accn":"0001903596-25-000234","fy":2024,"fp":"FY","form":"20-F/A","filed":"2025-05-02","frame":"CY2022"},{"start":"2023-01-01","end":"2023-12-31","val":-0.01,"accn":"0001903596-25-000224","fy":2024,"fp":"FY","form":"20-F","filed":"2025-05-01"},{"start":"2023-01-01","end":"2023-12-31","val":-0.01,"accn":"0001903596-25-000234","fy":2024,"fp":"FY","form":"20-F/A","filed":"2025-05-02","frame":"CY2023"},{"start":"2024-01-01","end":"2024-12-31","val":-0.03,"accn":"0001903596-25-000224","fy":2024,"fp":"FY","form":"20-F","filed":"2025-05-01"},{"start":"2024-01-01","end":"2024-12-31","val":-0.03,"accn":"0001903596-25-000234","fy":2024,"fp":"FY","form":"20-F/A","filed":"2025-05-02","frame":"CY2024"}]}}