Debt - Additional Information (Details)						1 Months Ended			12 Months Ended
	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	Nov. 30, 2019 USD ($)	Jun. 30, 2022 USD ($)	Nov. 30, 2021 USD ($)	Apr. 30, 2021 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Nov. 30, 2022 USD ($)	May 31, 2022 USD ($)	Feb. 02, 2021 USD ($)	May 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Jun. 30, 2018 USD ($)
Debt Instrument [Line Items]
Purchase of capped calls									$ 0	$ 61,295,000	$ 49,280,000
Repurchase of common stock									0	200,000,000	75,000,000
Loss on early extinguishment of debt									0	(3,337,000)	0
Interest expense									34,137,000	32,643,000
Amortization of debt discount and issuance costs									3,568,000	3,336,000
Debt instrument prepaid includes final payment charge and prepayment fee									20,486,000	124,119,000	0
Navire Bms Member | License Agreement
Debt Instrument [Line Items]
Amount paid to lenders						$ 20,500,000
Principle amount paid to lenders						20,100,000
Exit fee						$ 400,000
Loan Agreement
Debt Instrument [Line Items]
Debt Instrument face amount												$ 450,000,000.0
Stated interest rate							9.00%
Debt instrument payment amortization date							Jan. 02, 2025
Debt instrument potential payment extended amortization date							Jan. 02, 2026
Debt instrument, frequency of interest payment							quarterly
Maturity date							Nov. 17, 2026
Debt issuance costs including initial purchasers discounts, legal and other professional fees									1,100,000
Interest expense									46,100,000	5,500,000
Amortization of debt discount and issuance costs									5,000,000.0	600,000
Interest payable									6,400,000	5,000,000.0
Loan Agreement | Payment in Kind
Debt Instrument [Line Items]
Stated interest rate							3.00%
Accrued interest convertible into principal									15,300,000
Hercules Capital, Inc
Debt Instrument [Line Items]
Interest expense										8,100,000	7,900,000
Amortization of debt discount and issuance costs										1,700,000	1,300,000
Hercules Capital, Inc | Other Income (Expense)
Debt Instrument [Line Items]
Loss on early extinguishment of debt							$ 2,600,000
Maximum | Loan Agreement
Debt Instrument [Line Items]
Debt Instrument face amount							$ 750,000,000.0
Debt instrument prepayment premium percentage							3.00%
Debt instrument mandatory prepayments percentage of net cash proceeds from prepayment event transaction							75.00%
Minimum | Loan Agreement
Debt Instrument [Line Items]
Debt instrument prepayment premium percentage							1.00%
Debt instrument mandatory prepayments percentage of net cash proceeds from prepayment event transaction							50.00%
2029 Notes
Debt Instrument [Line Items]
Debt Instrument face amount	$ 717,500,000								$ 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
Stated interest rate	2.25%
Maturity year	2029
Debt instrument, frequency of interest payment	semiannually
Interest payable beginning date	Aug. 01, 2021
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 payable									$ 7,000,000.0	7,000,000.0
Interest expense									18,688,000	17,239,000
Amortization of debt discount and issuance costs									1,869,000	1,682,000
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						$ 550,000,000.0
Proceeds from exercise of option to purchase additional notes			$ 75,000,000.0
Debt instrument issuance date			Mar. 09, 2020
Stated interest rate			2.50%
Maturity year			2027
Debt instrument, frequency of interest payment			semiannually
Interest payable beginning date			Sep. 15, 2020
Maturity date			Mar. 15, 2027
Description of payment terms of notes									The 2027 Notes will accrue interest payable semiannually 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			75,000,000.0
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			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
Debt issuance costs allocated to equity component			4,100,000
Debt issuance costs allocated to liability component			$ 8,900,000
Expected life of notes			7 years
Interest payable									$ 4,000,000.0	4,000,000.0
Interest expense									15,449,000	15,404,000	26,802,000
Amortization of debt discount and issuance costs									1,699,000	1,654,000	15,649,000
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		$ 50,000,000.0
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				$ 75,000,000.0
Stock repurchased during period, shares | shares				2,414,681
Repurchase of common stock price per share | $ / shares				$ 31.06
Tranche 1 Advance | Loan Agreement
Debt Instrument [Line Items]
Proceeds from issuance of Term Loans after deducting debt discount and issuance costs									431,300,000
Proceeds from term loan, net of issuance costs									$ 18,700,000
Tranche 1 Advance | Maximum | Loan Agreement
Debt Instrument [Line Items]
Debt Instrument face amount							$ 450,000,000.0
Tranche 2 Advance | Maximum | Loan Agreement
Debt Instrument [Line Items]
Debt Instrument face amount							$ 300,000,000.0
Debt instrument, amount available to be drawn													$ 100,000,000.0
Tranche I | Hercules Capital, Inc
Debt Instrument [Line Items]
Debt Instrument face amount																	$ 35,000,000.0
Tranche II | Hercules Capital, Inc
Debt Instrument [Line Items]
Debt Instrument face amount																$ 20,000,000.0
Tranche III | Hercules Capital, Inc
Debt Instrument [Line Items]
Debt Instrument face amount															$ 20,000,000.0
Tranche IV | Hercules Capital, Inc
Debt Instrument [Line Items]
Debt Instrument face amount								$ 25,000,000.0
Tranche A Loan | Silicon Valley Bank and Hercules Loan Agreement
Debt Instrument [Line Items]
Debt Instrument face amount					$ 17,500,000
Interest rate										8.50%
Debt instrument prepaid includes final payment charge and prepayment fee								$ 18,100,000
Tranche A Loan | Silicon Valley Bank and Hercules Loan Agreement | Eidos
Debt Instrument [Line Items]
Stated interest rate					8.50%
Maturity date					Oct. 02, 2023
Tranche A Loan | Silicon Valley Bank and Hercules Loan Agreement | Prime Rate | Eidos
Debt Instrument [Line Items]
Interest rate					3.25%