The expected volatility of the share price used to calculate the fair value of the share options granted. Expected volatility is a measure of the amount by which a price is expected to fluctuate during a period. The measure of volatility used in option pricing models is the annualised standard deviation of the continuously compounded rates of return on the share over a period of time.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 2
-IssueDate 2020-01-01
-Paragraph 47
-Subparagraph a
-Clause i
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2020-en-r&anchor=para_47_a_i&doctype=Standard
-URIDate 2020-01-01

+ Details

Name:	ifrs-full_DescriptionOfExpectedVolatilityShareOptionsGranted
Namespace Prefix:	ifrs-full_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The option life of share options granted.

+ References

+ Details

Name:	ifrs-full_DescriptionOfOptionLifeShareOptionsGranted
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	duration

- Definition

The implied yield currently available on zero-coupon government issues of the country in whose currency the exercise price for share options granted is expressed, with a remaining term equal to the expected term of the option being valued (based on the option's remaining contractual life and taking into account the effects of expected early exercise). [Refer: Government [member]]

+ References

+ Details

Name:	ifrs-full_DescriptionOfRiskFreeInterestRateShareOptionsGranted
Namespace Prefix:	ifrs-full_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table.

+ References

No definition available.

+ Details

Name:	ifrs-full_DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The exercise price of share options granted.

+ References

+ Details

Name:	ifrs-full_ExercisePriceShareOptionsGranted2019
Namespace Prefix:	ifrs-full_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

- Definition

The weighted average fair value of share options granted during the period at the measurement date. [Refer: Weighted average [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 2
-IssueDate 2020-01-01
-Paragraph 47
-Subparagraph a
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2020-en-r&anchor=para_47_a&doctype=Standard
-URIDate 2020-01-01

+ Details

Name:	ifrs-full_WeightedAverageFairValueAtMeasurementDateShareOptionsGranted
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The weighted average share price used as input to the option pricing model to calculate the fair value of share options granted. [Refer: Option pricing model [member]; Weighted average [member]]

+ References

+ Details

Name:	ifrs-full_WeightedAverageSharePriceShareOptionsGranted2019
Namespace Prefix:	ifrs-full_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	ifrs-full_TypesOfSharebasedPaymentArrangementsAxis=bntx_ManagementBoardGrantMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_NonadjustingEventsAfterReportingPeriodAxis=bntx_EstimatedAllocationDateOneMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_NonadjustingEventsAfterReportingPeriodAxis=bntx_EstimatedAllocationDateTwoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_TypesOfSharebasedPaymentArrangementsAxis=bntx_ChiefExecutiveOfficerGrantMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_TypesOfSharebasedPaymentArrangementsAxis=bntx_EmployeeStockOwnershipPlanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Share-Based Payments - Summary of Inputs Used in Measurement of Fair Value at Grant Date (Details)						1 Months Ended		12 Months Ended
	Feb. 13, 2020 EUR (€) yr € / shares	Feb. 13, 2020 EUR (€) yr $ / shares	Dec. 01, 2019 EUR (€) yr € / shares	Oct. 10, 2019 EUR (€) yr € / shares	Nov. 15, 2018 EUR (€) yr € / shares	May 31, 2019 EUR (€) yr € / shares	Apr. 03, 2019 EUR (€) yr € / shares	Dec. 31, 2022 EUR (€) yr € / shares	Dec. 31, 2021 EUR (€) yr € / shares
Management Board Grant
Disclosure Of Terms And Conditions Of Sharebased Payment Arrangement [Line Items]
Weighted average fair value \| €	€ 10.83	€ 10.83
Weighted average share price	€ 28.20
Exercise price \| (per share)	€ 28.32	€ 30.78
Expected volatility (%)	36.60%	36.60%
Expected life (years) \| yr	4.75	4.75
Risk-free interest rate (%)	1.61%	1.61%
Management Board Grant \| Estimated Allocation Date 2021
Disclosure Of Terms And Conditions Of Sharebased Payment Arrangement [Line Items]
Weighted average fair value \| €									€ 26.85
Weighted average share price									€ 66.43
Exercise price									€ 67.26
Expected volatility (%)									41.00%
Expected life (years) \| yr									5.01
Risk-free interest rate (%)									0.88%
Management Board Grant \| Estimated Allocation Date 2022
Disclosure Of Terms And Conditions Of Sharebased Payment Arrangement [Line Items]
Weighted average fair value \| €								€ 26.61
Weighted average share price								€ 66.43
Exercise price								€ 67.27
Expected volatility (%)								40.70%
Expected life (years) \| yr								6.05
Risk-free interest rate (%)								0.88%
Chief Executive Officer Grant
Disclosure Of Terms And Conditions Of Sharebased Payment Arrangement [Line Items]
Weighted average fair value \| €				€ 5.63
Weighted average share price				€ 13.60
Exercise price				€ 13.60
Expected volatility (%)				41.40%
Expected life (years) \| yr				5.37
Risk-free interest rate (%)				1.52%
Employee Stock Ownership Plan
Disclosure Of Terms And Conditions Of Sharebased Payment Arrangement [Line Items]
Weighted average fair value \| €			€ 9.49		€ 7.41	€ 7.04	€ 6.93
Weighted average share price			€ 19.84		€ 14.40	€ 16.03	€ 15.72
Exercise price			€ 15.82		€ 10.14	€ 15.39	€ 15.03
Expected volatility (%)			46.00%		46.00%	46.00%	46.00%
Expected life (years) \| yr			5.50		5.84	6.00	6.00
Risk-free interest rate (%)			0.05%		0.05%	0.05%	0.05%