XML 87 R76.htm IDEA: XBRL DOCUMENT
v3.21.2

Long‑Term Debt - 2026 Notes Capped Call Options Narrative (Details) - Convertible Debt - USD ($) $ / shares in Units, $ in Thousands |  |  | 6 Months Ended
--- | --- | --- | ---
Jun. 28, 2021 | Jan. 26, 2021 | Jun. 30, 2021
2026 Notes |  |  |
Debt Instrument [Line Items] |  |  |
Capped call options expense |  |  | $ 150
Capped call transaction, cap price (USD per share) |  | $ 72.9795 |
Capped call, premium above share price, percentage |  | 65.00% |
2027 Notes |  |  |
Debt Instrument [Line Items] |  |  |
Capped call options expense |  |  | $ 50
Capped call transaction, cap price (USD per share) | $ 95.5575 |  |
Capped call, premium above share price, percentage | 55.00% |  |

X
- Definition Capped Call Options Expense + References No definition available. + Details
Name: | bsy_CappedCallOptionsExpense
Namespace Prefix: | bsy_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Option Indexed to Issuer's Equity, Strike Price, Premium Over Share Price, Percentage + References No definition available. + Details
Name: | bsy_OptionIndexedToIssuersEquityStrikePricePremiumOverSharePricePercentage
Namespace Prefix: | bsy_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_DebtInstrumentLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Exercise or strike price stated in the contract for options indexed to the issuer's equity shares. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 40 -Section 50 -Paragraph 5 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=120519210&loc=d3e90205-114008 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 480 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(1) -URI http://asc.fasb.org/extlink&oid=109262807&loc=d3e22047-110879 + Details
Name: | us-gaap_OptionIndexedToIssuersEquityStrikePrice1
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_DebtInstrumentAxis=bsy_TwoThousandTwentySixNotesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=us-gaap_ConvertibleDebtMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=bsy_TwoThousandTwentySevenNotesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |