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v3.24.0.1

Realignment Costs - Realignment Activities Rollforward (Details) $ in Thousands | 12 Months Ended
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Dec. 31, 2023 USD ($)
Postemployment Benefits [Roll Forward] |
Realignment costs, beginning balance | $ 0
Realignment costs | 12,579
Payments | (268)
Adjustments | 148
Realignment costs, beginning balance | $ 12,459

X
- Definition Postemployment Benefits, Payments + References No definition available. + Details
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Namespace Prefix: | bsy_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Postemployment Benefits + References No definition available. + Details
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Balance Type: | na
Period Type: | duration

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- Definition Postemployment Benefits, Translation And Other Adjustment + References No definition available. + Details
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Namespace Prefix: | bsy_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Period expense related to postemployment benefits. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Liability for amount due employees, in addition to wages and any other money that employers owe employees, when their employment ends through a layoff or other termination. For example, a company may provide involuntarily terminated employees with a lump sum payment equal to one week's salary for every year of employment. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant