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Summary of Significant Accounting Policies - Additional Information (Details)
 1 Months Ended 3 Months Ended
Sep. 30, 2022
USD ($)
Mar. 31, 2023
USD ($)
Mar. 31, 2022
USD ($)
Dec. 31, 2022
USD ($)
Dec. 31, 2021
USD ($)
Summary Of Significant Accounting Policies [Line Items]          
Stockholders equity note stock split exchange ratio   0.0288      
Lease term   12 months      
Right-of-use asset or lease liability   $ 0      
General and administrative   $ 15,849,000 $ 1,286,000    
Tax postion, Minimum percentage of tax benefit   50.00%      
Variable interest entity ownership percentage   5.00%      
Private CalciMedica          
Summary Of Significant Accounting Policies [Line Items]          
Deferred Offering Costs       $ 1,400,000  
Costs and expenses related party   $ 107,000 $ 27,000    
IPO [Member] | Private CalciMedica          
Summary Of Significant Accounting Policies [Line Items]          
Deferred Offering Costs         $ 1,100,000
General and administrative $ 1,500,000        
Maximum          
Summary Of Significant Accounting Policies [Line Items]          
Lease term   30 months      
Minimum          
Summary Of Significant Accounting Policies [Line Items]          
Lease term   6 months