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Earnings Per Share - Additional Information (Details)	Sep. 18, 2019 shares
Earnings Per Share [Abstract]
Shares issued during period stock split	206,595,492
Stock split ratio	0.05556

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- Definition

Shares issued during period stock split.

+ References

No definition available.

+ Details

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Namespace Prefix:	bntx_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

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- Definition

Stock split conversion ratio.

+ References

No definition available.

+ Details

Name:	bntx_StockSplitConversionRatio
Namespace Prefix:	bntx_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

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- References

No definition available.

+ Details

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