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Debt - Additional Information (Details)
 1 Months Ended 3 Months Ended 6 Months Ended 12 Months Ended
Feb. 28, 2025
USD ($)
TradingDay
shares
$ / shares
Jan. 17, 2024
USD ($)
Jan. 28, 2021
USD ($)
TradingDay
shares
$ / shares
Jan. 25, 2021
USD ($)
$ / shares
shares
Mar. 09, 2020
USD ($)
shares
TradingDay
$ / shares
Mar. 04, 2020
USD ($)
$ / shares
shares
Feb. 28, 2025
USD ($)
$ / shares
shares
Jan. 31, 2024
USD ($)
Jan. 17, 2024
USD ($)
Jun. 30, 2025
USD ($)
Jun. 30, 2024
USD ($)
Jun. 30, 2025
USD ($)
Jun. 30, 2024
USD ($)
Dec. 31, 2021
USD ($)
Dec. 31, 2020
USD ($)
Dec. 31, 2024
USD ($)
Feb. 02, 2021
USD ($)
Debt Instrument [Line Items]                                  
Repurchase of common stock                       $ 48,276,000 $ 0        
Interest expense                   $ 11,592,000 $ 8,578,000 21,186,000 17,152,000        
Amortization of debt discount and issuance costs                   1,436,000 937,000 2,548,000 1,868,000        
Interest payable                   14,411,000   14,411,000       $ 11,056,000  
Debt instrument prepaid includes final payment charge and prepayment fee                       459,000,000 473,417,000        
Loss on extinguishment of debt                   0 0 21,155,000 26,590,000        
Financing Agreement                                  
Debt Instrument [Line Items]                                  
Interest expense                     14,300,000 8,500,000 26,200,000        
Amortization of debt discount and issuance costs                     700,000 500,000 1,400,000        
Interest payable $ 8,000,000           $ 8,000,000                    
Debt instrument prepaid includes final payment charge and prepayment fee 467,000,000                                
Prepayment fee 9,000,000                                
Loss on extinguishment of debt 21,200,000                                
Interest rate description   the sum of (i) the base rate plus (ii) 5.75% and (B) in the case of Term Loans bearing interest based on the three-month forward-looking term secured overnight financing rate administered by the Federal Reserve Bank of New York (“Term SOFR”), the sum of (i) three-month Term SOFR (subject to 1.00% per annum floor), plus (ii) 6.75%.                              
Principal payments $ 450,000,000                                
Base Rate plus Interest | Financing Agreement                                  
Debt Instrument [Line Items]                                  
Interest rate   5.75%                              
SOFR | Financing Agreement                                  
Debt Instrument [Line Items]                                  
Interest rate   1.00%                              
SOFR plus Interest | Financing Agreement                                  
Debt Instrument [Line Items]                                  
Interest rate   6.75%                              
Loan Agreement                                  
Debt Instrument [Line Items]                                  
Interest expense                 $ 3,000,000                
Amortization of debt discount and issuance costs                 400,000                
Interest payable   $ 2,400,000             2,400,000                
Debt instrument prepaid includes final payment charge and prepayment fee   475,800,000                              
Prepayment fee   9,100,000                              
Exit cost   8,600,000                              
Transaction-related fees   300,000             300,000                
Loss on extinguishment of debt   26,600,000                              
Principal payments   $ 455,400,000                              
Loan Agreement | Financing Agreement                                  
Debt Instrument [Line Items]                                  
Prepayment percentage   3.00%                              
Share Repurchase Transactions                                  
Debt Instrument [Line Items]                                  
Repurchase of common stock             $ 48,300,000                    
Stock repurchased during period, shares | shares             1,405,411                    
Repurchase of common stock price per share | $ / shares $ 34.35           $ 34.35                    
Maximum | Financing Agreement                                  
Debt Instrument [Line Items]                                  
Debt Instrument face amount   $ 750,000,000             750,000,000                
Interest rate   2.00%                              
2031 Notes                                  
Debt Instrument [Line Items]                                  
Debt Instrument face amount $ 575,000,000           $ 575,000,000     $ 575,000,000   $ 575,000,000       0  
Proceeds from exercise of option to purchase additional notes $ 75,000,000           $ 75,000,000                    
Debt instrument issuance date Feb. 28, 2025                                
Maturity year 2031                                
Debt instrument, frequency of interest payment semiannually                                
Interest payable beginning date Sep. 01, 2025                                
Stated interest rate 1.75%           1.75%     1.75%   1.75%          
Maturity date Mar. 01, 2031                                
Description of payment terms of notes                       The 2031 Notes are senior, unsecured obligations of BridgeBio and will accrue interest payable semiannually in arrears on March 1 and September 1 of each year, beginning on September 1, 2025, at a rate of 1.75% per year. The 2031 Notes will mature on March 1, 2031, unless earlier converted, redeemed or repurchased.          
Proceeds from issuance of notes after deducting discount and offering expenses $ 563,000,000                                
Repurchase of common stock 48,300,000                                
Denomination of the principal amount of debt in consideration conversion of the notes $ 1,000                                
Debt instrument, convertible, threshold trading days | TradingDay 20                                
Debt instrument, convertible, threshold consecutive trading days | TradingDay 30                                
Debt instrument, convertible, threshold percentage of stock price trigger 130.00%                                
Number of consecutive trading day period (Measurement period) for conversion of notes 5 days                                
Number of business days in consideration of conversion of notes 5 days                                
Threshold percentage of stock price trigger in measurement period 98.00%                                
Conversion rate 20.0773                                
Initial conversion price per share | $ / shares $ 49.81           $ 49.81                    
Debt instrument, conversion, equivalent shares of common stock | shares 11,544,448                                
Percentage of principal amount to be repurchased in fundamental change 100.00%                                
Minimum threshold percentage of aggregate principal by trustee or holders 25.00%                                
Debt issuance costs including initial purchasers discounts, legal and other professional fees $ 12,000,000           $ 12,000,000                    
Expected life of notes 6 years                                
Interest expense                   $ 2,989,000   $ 3,985,000          
Amortization of debt discount and issuance costs                   474,000   631,000          
Interest payable                   3,400,000   3,400,000          
2031 Notes | Maximum                                  
Debt Instrument [Line Items]                                  
Debt instrument, increase in conversion rate, number of shares issuable | shares 16,739,400                                
2029 Notes                                  
Debt Instrument [Line Items]                                  
Debt Instrument face amount     $ 717,500,000             $ 747,500,000   $ 747,500,000       747,500,000 $ 747,500,000
Proceeds from exercise of option to purchase additional notes     67,500,000                            
Debt instrument option to purchase additional notes     97,500,000                            
Proceeds from exercise of remaining portion of option to purchase additional notes     $ 30,000,000.0                            
Debt instrument issuance date     Jan. 28, 2021                            
Maturity year     2029                            
Debt instrument, frequency of interest payment     semiannually                            
Interest payable beginning date     Aug. 01, 2021                            
Stated interest rate     2.25%             2.25%   2.25%          
Maturity date     Feb. 01, 2029                            
Description of payment terms of notes                       The 2029 Notes are senior, unsecured obligations of BridgeBio and will accrue interest payable semiannually in arrears on February 1 and August 1 of each year, beginning on August 1, 2021, at a rate of 2.25% per year. The 2029 Notes will mature on February 1, 2029, unless earlier converted, redeemed or repurchased.          
Proceeds from issuance of notes after deducting discount and offering expenses     $ 731,400,000                            
Direct offering expense     0                            
Purchase of capped calls     61,300,000                            
Repurchase of common stock     50,000,000.0                            
Denomination of the principal amount of debt in consideration conversion of the notes     $ 1,000                            
Debt instrument, convertible, threshold trading days | TradingDay     20                            
Debt instrument, convertible, threshold consecutive trading days | TradingDay     30                            
Debt instrument, convertible, threshold percentage of stock price trigger     130.00%                            
Number of consecutive trading day period (Measurement period) for conversion of notes     5 days                            
Number of business days in consideration of conversion of notes     5 days                            
Threshold percentage of stock price trigger in measurement period     98.00%                            
Conversion rate     10.3050                            
Initial conversion price per share | $ / shares     $ 97.04                            
Debt instrument, conversion, equivalent shares of common stock | shares     7,702,988                            
Percentage of principal amount to be repurchased in fundamental change     100.00%                            
Minimum threshold percentage of aggregate principal by trustee or holders     25.00%                            
Debt issuance costs including initial purchasers discounts, legal and other professional fees     $ 16,100,000                            
Expected life of notes     8 years                            
Interest expense                   $ 4,706,000 4,694,000 $ 9,411,000 9,386,000        
Amortization of debt discount and issuance costs                   502,000 490,000 1,002,000 977,000        
Interest payable                   7,000,000   7,000,000       7,000,000  
2029 Notes | Maximum                                  
Debt Instrument [Line Items]                                  
Debt instrument, increase in conversion rate, number of shares issuable | shares     11,361,851                            
2027 Notes                                  
Debt Instrument [Line Items]                                  
Debt Instrument face amount         $ 550,000,000.0         $ 550,000,000   $ 550,000,000       550,000,000  
Proceeds from exercise of option to purchase additional notes         $ 75,000,000.0                        
Debt instrument issuance date         Mar. 09, 2020                        
Maturity year         2027                        
Debt instrument, frequency of interest payment         semi-annually                        
Interest payable beginning date         Sep. 15, 2020                        
Stated interest rate         2.50%         2.50%   2.50%          
Maturity date         Mar. 15, 2027                        
Description of payment terms of notes                       The 2027 Notes will accrue interest payable semi-annually in arrears on March 15 and September 15 of each year, beginning on September 15, 2020, at a rate of 2.50% per year. The 2027 Notes will mature on March 15, 2027, unless earlier converted or repurchased          
Proceeds from issuance of notes after deducting discount and offering expenses         $ 537,000,000.0                        
Purchase of capped calls         49,300,000                        
Repurchase of common stock         75,000,000                        
Denomination of the principal amount of debt in consideration conversion of the notes         $ 1,000                        
Debt instrument, convertible, threshold trading days | TradingDay         20                        
Debt instrument, convertible, threshold consecutive trading days | TradingDay         30                        
Debt instrument, convertible, threshold percentage of stock price trigger         130.00%                        
Number of consecutive trading day period (Measurement period) for conversion of notes         5 days                        
Number of business days in consideration of conversion of notes         5 days                        
Threshold percentage of stock price trigger in measurement period         98.00%                        
Conversion rate         23.4151                        
Initial conversion price per share | $ / shares         $ 42.71                        
Debt instrument, conversion, equivalent shares of common stock | shares         12,878,305                        
Percentage of principal amount to be repurchased in fundamental change         100.00%                        
Minimum threshold percentage of aggregate principal by trustee or holders         25.00%                        
Debt issuance costs including initial purchasers discounts, legal and other professional fees         $ 13,000,000.0                        
Expected life of notes         7 years                        
Interest expense                   $ 3,897,000 3,884,000 $ 7,790,000 7,766,000        
Amortization of debt discount and issuance costs                   460,000 $ 447,000 915,000 $ 891,000        
Interest payable                   $ 4,000,000   $ 4,000,000       $ 4,000,000  
2027 Notes | Maximum                                  
Debt Instrument [Line Items]                                  
Debt instrument, increase in conversion rate, number of shares issuable | shares         17,707,635                        
2021 Capped Call Transactions                                  
Debt Instrument [Line Items]                                  
Purchase of capped calls       $ 61,300,000                          
Initial conversion price per share | $ / shares       $ 97.04                          
Capped call transaction, cap price per share | $ / shares       $ 131.58                          
Number of shares covered by capped calls | shares       7,702,988                          
Adjustments to additional paid in capital related to premium payments                           $ 61,300,000      
2021 Capped Call Transactions | Share Repurchase Transactions                                  
Debt Instrument [Line Items]                                  
Repurchase of common stock       $ 50,000,000                          
Stock repurchased during period, shares | shares       759,993                          
Repurchase of common stock price per share | $ / shares       $ 65.79                          
2020 Capped Call Transactions                                  
Debt Instrument [Line Items]                                  
Purchase of capped calls           $ 49,300,000                      
Initial conversion price per share | $ / shares           $ 42.71                      
Capped call transaction, cap price per share | $ / shares           $ 62.12                      
Premium over last reported sale price percentage           100.00%                      
Number of shares covered by capped calls | shares           12,878,305                      
Adjustments to additional paid in capital related to premium payments                             $ 49,300,000    
2020 Capped Call Transactions | Share Repurchase Transactions                                  
Debt Instrument [Line Items]                                  
Repurchase of common stock           $ 75,000,000                      
Stock repurchased during period, shares | shares           2,414,681                      
Repurchase of common stock price per share | $ / shares           $ 31.06                      
Initial Term Loan | Financing Agreement                                  
Debt Instrument [Line Items]                                  
Debt Instrument face amount   $ 450,000,000             450,000,000                
Proceeds from term loan, net of issuance costs               $ 16,000,000                  
Initial Term Loan | Loan Agreement                                  
Debt Instrument [Line Items]                                  
Proceeds from issuance of Term Loans after deducting debt discount and issuance costs               $ 434,000,000                  
Incremental Term Loan | Financing Agreement                                  
Debt Instrument [Line Items]                                  
Debt Instrument face amount   $ 300,000,000             $ 300,000,000