$BSY
Bentley Systems Inc Stock $bsy

$bsy Overview Financials Valuation SEC Filings Company Website

2021 Q4 Form 10-K Financial Statement

#000162828022004474 Filed on March 01, 2022

Income Statement

Concept	2021 Q4	2021 Q3	2021 Q2
Revenue	$271.6M	$248.5M	$222.9M
YoY Change	23.71%	22.41%	20.97%
Cost Of Revenue	$59.57M	$54.23M	$53.45M
YoY Change	17.72%	27.22%	45.62%
Gross Profit	$212.1M	$194.2M	$169.5M
YoY Change	25.48%	21.13%	14.84%
Gross Profit Margin	78.07%	78.17%	76.02%
Selling, General & Admin	$87.28M	$79.72M	$79.89M
YoY Change	35.52%	6.61%	45.0%
% of Gross Profit	41.16%	41.04%	47.14%
Research & Development	$63.00M	$57.33M	$52.78M
YoY Change	37.26%	14.17%	19.35%
% of Gross Profit	29.71%	29.52%	31.14%
Depreciation & Amortization	$16.85M	$16.67M	$10.28M
YoY Change	63.56%	83.14%	19.53%
% of Gross Profit	7.94%	8.58%	6.07%
Operating Expenses	$159.2M	$234.7M	$137.3M
YoY Change	38.78%	51.37%	33.27%
Operating Profit	$52.89M	-$40.45M	$32.22M
YoY Change	-2.56%	-859.87%	-27.74%
Interest Expense	-$2.808M	$3.861M	$2.582M
YoY Change	-124.85%	95.49%	123.36%
% of Operating Profit	-5.31%		8.01%
Other Income/Expense, Net	$408.0K	-$957.0K	-$3.777M
YoY Change	-89.26%	-106.96%	-1032.59%
Pretax Income	$44.77M	-$45.24M	$25.99M
YoY Change	-35.49%	-364.1%	-40.75%
Income Tax	$2.717M	$4.223M	-$20.75M
% Of Pretax Income	6.07%		-79.81%
Net Earnings	$41.40M	-$50.13M	$44.91M
YoY Change	-20.27%	-957.77%	14.93%
Net Earnings / Revenue	15.24%	-20.17%	20.15%
Basic Earnings Per Share		-$0.16	$0.15
Diluted Earnings Per Share	$131.7K	-$0.16	$0.14
COMMON SHARES
Basic Shares Outstanding		308.2M shares	304.1M shares
Diluted Shares Outstanding		308.2M shares	324.5M shares

Balance Sheet

Concept	2021 Q4	2021 Q3	2021 Q2
SHORT-TERM ASSETS
Cash & Short-Term Investments	$329.3M	$155.8M	$131.2M
YoY Change	169.95%	13.19%	4.51%
Cash & Equivalents	$329.3M	$155.8M	$131.2M
Short-Term Investments
Other Short-Term Assets	$51.23M	$56.02M	$58.97M
YoY Change	81.66%	59.15%	95.92%
Inventory
Prepaid Expenses
Receivables	$235.3M	$188.3M	$215.4M
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$615.8M	$400.1M	$405.5M
YoY Change	80.99%	18.06%	27.47%
LONG-TERM ASSETS
Property, Plant & Equipment	$82.64M	$79.75M	$84.04M
YoY Change	10.93%	5.9%	7.19%
Goodwill	$1.588B	$1.592B	$1.594B
YoY Change	173.32%	193.67%
Intangibles	$245.8M	$251.5M	$262.2M
YoY Change	438.79%	440.09%
Long-Term Investments	$0.00	$5.429M	$6.870M
YoY Change	-100.0%	4.4%	663.33%
Other Assets	$48.65M	$47.52M	$47.10M
YoY Change	23.1%	26.09%	-42.56%
Total Long-Term Assets	$2.043B	$2.054B	$2.049B
YoY Change	160.05%	173.29%	176.43%
TOTAL ASSETS
Total Short-Term Assets	$615.8M	$400.1M	$405.5M
Total Long-Term Assets	$2.043B	$2.054B	$2.049B
Total Assets	$2.659B	$2.454B	$2.454B
YoY Change	136.16%	125.04%	131.7%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$16.48M	$12.50M	$14.89M
YoY Change	-0.05%	-17.13%	-22.84%
Accrued Expenses	$323.6M	$317.3M	$314.5M
YoY Change	42.69%	49.05%	74.45%
Deferred Revenue	$224.6M	$189.7M	$215.7M
YoY Change	11.03%	9.28%
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$5.000M	$146.0K	$201.0K
YoY Change		-27.0%
Total Short-Term Liabilities	$593.9M	$549.4M	$569.6M
YoY Change	27.56%	30.12%	44.59%
LONG-TERM LIABILITIES
Long-Term Debt	$1.431B	$1.303B	$1.270B
YoY Change	481.7%	120.98%	513.45%
Other Long-Term Liabilities	$14.27M	$17.35M	$21.33M
YoY Change	10.27%	13.94%	-69.22%
Total Long-Term Liabilities	$1.445B	$1.320B	$1.291B
YoY Change	458.15%	118.28%	367.31%
TOTAL LIABILITIES
Total Short-Term Liabilities	$593.9M	$549.4M	$569.6M
Total Long-Term Liabilities	$1.445B	$1.320B	$1.291B
Total Liabilities	$2.250B	$2.075B	$1.982B
YoY Change	186.83%	91.55%	191.77%
SHAREHOLDERS EQUITY
Retained Earnings	-$439.6M	-$463.4M	-$387.1M
YoY Change	16.92%	13.58%
Common Stock	$2.825M	$2.820M	$2.812M
YoY Change	3.78%	7.55%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$409.2M	$379.0M	$471.8M
YoY Change
Total Liabilities & Shareholders Equity	$2.659B	$2.454B	$2.454B
YoY Change	136.16%	125.04%	131.7%

Cashflow Statement

Concept	2021 Q4	2021 Q3	2021 Q2
OPERATING ACTIVITIES
Net Income	$41.40M	-$50.13M	$44.91M
YoY Change	-20.27%	-957.77%	14.93%
Depreciation, Depletion And Amortization	$16.85M	$16.67M	$10.28M
YoY Change	63.56%	83.14%	19.53%
Cash From Operating Activities	$80.61M	$58.40M	$16.22M
YoY Change	-2.06%	46.72%	-74.49%
INVESTING ACTIVITIES
Capital Expenditures	-$6.387M	-$6.402M	-$2.050M
YoY Change	120.24%	82.91%	-62.73%
Acquisitions
YoY Change
Other Investing Activities	-$2.369M	-$33.44M	-$945.3M
YoY Change	-90.75%	430.86%	3240.11%
Cash From Investing Activities	-$8.756M	-$39.85M	-$947.4M
YoY Change	-69.28%	306.59%	2702.96%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	112.9M	3.139M	494.4M
YoY Change	-270.08%	-117.94%	1384.71%
NET CHANGE
Cash From Operating Activities	80.61M	58.40M	16.22M
Cash From Investing Activities	-8.756M	-39.85M	-947.4M
Cash From Financing Activities	112.9M	3.139M	494.4M
Net Change In Cash	184.8M	21.69M	-436.8M
YoY Change	-1566.54%	73.5%	-792.19%
FREE CASH FLOW
Cash From Operating Activities	$80.61M	$58.40M	$16.22M
Capital Expenditures	-$6.387M	-$6.402M	-$2.050M
Free Cash Flow	$86.99M	$64.80M	$18.27M
YoY Change	2.11%	49.65%	-73.56%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2021	dei	Entity Central Index Key EntityCentralIndexKey	0001031308
CY2021	dei	Amendment Flag AmendmentFlag	false
CY2021	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2021	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2021
CY2020Q4	us-gaap	Finance Lease Right Of Use Asset Statement Of Financial Position Extensible List FinanceLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2021-01-31#PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization
CY2021Q4	us-gaap	Finance Lease Right Of Use Asset Statement Of Financial Position Extensible List FinanceLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2021-01-31#PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization
CY2020Q4	us-gaap	Finance Lease Liability Current Statement Of Financial Position Extensible List FinanceLeaseLiabilityCurrentStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2021-01-31#AccruedLiabilitiesCurrent
CY2021Q4	us-gaap	Finance Lease Liability Current Statement Of Financial Position Extensible List FinanceLeaseLiabilityCurrentStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2021-01-31#AccruedLiabilitiesCurrent
CY2021Q4	us-gaap	Finance Lease Liability Noncurrent Statement Of Financial Position Extensible List FinanceLeaseLiabilityNoncurrentStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2021-01-31#OtherLiabilitiesNoncurrent
CY2020Q4	us-gaap	Finance Lease Liability Noncurrent Statement Of Financial Position Extensible List FinanceLeaseLiabilityNoncurrentStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2021-01-31#OtherLiabilitiesNoncurrent
CY2021	dei	Document Type DocumentType	10-K
CY2021	dei	Document Annual Report DocumentAnnualReport	true
CY2021	dei	Document Period End Date DocumentPeriodEndDate	2021-12-31
CY2021	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2021	dei	Document Transition Report DocumentTransitionReport	false
CY2021	dei	Entity File Number EntityFileNumber	001-39548
CY2021	dei	Entity Registrant Name EntityRegistrantName	BENTLEY SYSTEMS, INCORPORATED
CY2021	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
CY2021	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	95-3936623
CY2021	dei	Entity Address Address Line1 EntityAddressAddressLine1	685 Stockton Drive
CY2021	dei	Entity Address City Or Town EntityAddressCityOrTown	Exton
CY2021	dei	Entity Address State Or Province EntityAddressStateOrProvince	PA
CY2021	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	19341
CY2021	dei	City Area Code CityAreaCode	610
CY2021	dei	Local Phone Number LocalPhoneNumber	458-5000
CY2021	dei	Security12b Title Security12bTitle	Class B Common Stock, par value $0.01 per share
CY2021	dei	Trading Symbol TradingSymbol	BSY
CY2021	dei	Security Exchange Name SecurityExchangeName	NASDAQ
CY2021	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2021	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2021	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2021	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2021	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2021	dei	Entity Small Business EntitySmallBusiness	false
CY2021	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2021	dei	Icfr Auditor Attestation Flag IcfrAuditorAttestationFlag	true
CY2021	dei	Entity Shell Company EntityShellCompany	false
CY2021Q2	dei	Entity Public Float EntityPublicFloat	7000000000	USD
CY2021	dei	Auditor Name AuditorName	KPMG LLP
CY2021	dei	Auditor Location AuditorLocation	Philadelphia, Pennsylvania
CY2021	dei	Auditor Firm AuditorFirmId	185
CY2021	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	965046000	USD
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CY2020	us-gaap	Gross Profit GrossProfit	634389000	USD
CY2019	us-gaap	Gross Profit GrossProfit	592504000	USD
CY2021	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	220915000	USD
CY2020	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	185515000	USD
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CY2020	us-gaap	Selling And Marketing Expense SellingAndMarketingExpense	143791000	USD
CY2019	us-gaap	Selling And Marketing Expense SellingAndMarketingExpense	155294000	USD
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CY2020	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	113274000	USD
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CY2021	us-gaap	Deferred Compensation Arrangement With Individual Compensation Expense DeferredCompensationArrangementWithIndividualCompensationExpense	95046000	USD
CY2020	us-gaap	Deferred Compensation Arrangement With Individual Compensation Expense DeferredCompensationArrangementWithIndividualCompensationExpense	177000	USD
CY2019	us-gaap	Deferred Compensation Arrangement With Individual Compensation Expense DeferredCompensationArrangementWithIndividualCompensationExpense	408000	USD
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CY2021	us-gaap	Professional Fees ProfessionalFees	0	USD
CY2020	us-gaap	Professional Fees ProfessionalFees	26130000	USD
CY2019	us-gaap	Professional Fees ProfessionalFees	0	USD
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CY2020	us-gaap	Operating Expenses OperatingExpenses	484239000	USD
CY2019	us-gaap	Operating Expenses OperatingExpenses	450639000	USD
CY2021	us-gaap	Operating Income Loss OperatingIncomeLoss	94589000	USD
CY2020	us-gaap	Operating Income Loss OperatingIncomeLoss	150150000	USD
CY2019	us-gaap	Operating Income Loss OperatingIncomeLoss	141865000	USD
CY2021	us-gaap	Interest Income Expense Nonoperating Net InterestIncomeExpenseNonoperatingNet	-12491000	USD
CY2020	us-gaap	Interest Income Expense Nonoperating Net InterestIncomeExpenseNonoperatingNet	-7476000	USD
CY2019	us-gaap	Interest Income Expense Nonoperating Net InterestIncomeExpenseNonoperatingNet	-8199000	USD
CY2021	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	11231000	USD
CY2020	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	24946000	USD
CY2019	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-5557000	USD
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	93329000	USD
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CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	128109000	USD
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-3448000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	38625000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	23738000	USD
CY2021	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-3585000	USD
CY2020	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-2474000	USD
CY2019	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-1275000	USD
CY2021	us-gaap	Net Income Loss NetIncomeLoss	93192000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	126521000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	103096000	USD
CY2021	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	9000	USD
CY2020	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	234000	USD
CY2019	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	8000	USD
CY2021	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	93183000	USD
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CY2021	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	314610814	shares
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	299371129	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	293796707	shares
CY2021Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	329337000	USD
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CY2021Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	6541000	USD
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CY2021Q4	us-gaap	Prepaid Taxes PrepaidTaxes	16880000	USD
CY2020Q4	us-gaap	Prepaid Taxes PrepaidTaxes	3535000	USD
CY2021Q4	bsy	Other Prepaid Expenses And Current Assets OtherPrepaidExpensesAndCurrentAssets	34348000	USD
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CY2021Q4	us-gaap	Contract With Customer Liability Noncurrent ContractWithCustomerLiabilityNoncurrent	7983000	USD
CY2020Q4	us-gaap	Contract With Customer Liability Noncurrent ContractWithCustomerLiabilityNoncurrent	7020000	USD
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CY2020Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	741113000	USD
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CY2019	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	183552000	USD
CY2021	us-gaap	Selling And Marketing Expense SellingAndMarketingExpense	162240000	USD
CY2020	us-gaap	Selling And Marketing Expense SellingAndMarketingExpense	143791000	USD
CY2019	us-gaap	Selling And Marketing Expense SellingAndMarketingExpense	155294000	USD
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CY2021	us-gaap	Deferred Compensation Arrangement With Individual Compensation Expense DeferredCompensationArrangementWithIndividualCompensationExpense	95046000	USD
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CY2019	us-gaap	Deferred Compensation Arrangement With Individual Compensation Expense DeferredCompensationArrangementWithIndividualCompensationExpense	408000	USD
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CY2019	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	14213000	USD
CY2021	us-gaap	Professional Fees ProfessionalFees	0	USD
CY2020	us-gaap	Professional Fees ProfessionalFees	26130000	USD
CY2019	us-gaap	Professional Fees ProfessionalFees	0	USD
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CY2020	us-gaap	Operating Expenses OperatingExpenses	484239000	USD
CY2019	us-gaap	Operating Expenses OperatingExpenses	450639000	USD
CY2021	us-gaap	Operating Income Loss OperatingIncomeLoss	94589000	USD
CY2020	us-gaap	Operating Income Loss OperatingIncomeLoss	150150000	USD
CY2019	us-gaap	Operating Income Loss OperatingIncomeLoss	141865000	USD
CY2021	us-gaap	Interest Income Expense Nonoperating Net InterestIncomeExpenseNonoperatingNet	-12491000	USD
CY2020	us-gaap	Interest Income Expense Nonoperating Net InterestIncomeExpenseNonoperatingNet	-7476000	USD
CY2019	us-gaap	Interest Income Expense Nonoperating Net InterestIncomeExpenseNonoperatingNet	-8199000	USD
CY2021	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	11231000	USD
CY2020	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	24946000	USD
CY2019	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-5557000	USD
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	93329000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	167620000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	128109000	USD
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-3448000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	38625000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	23738000	USD
CY2021	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-3585000	USD
CY2020	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-2474000	USD
CY2019	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-1275000	USD
CY2021	us-gaap	Net Income Loss NetIncomeLoss	93192000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	126521000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	103096000	USD
CY2021	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	9000	USD
CY2020	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	234000	USD
CY2019	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	8000	USD
CY2021	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	93183000	USD
CY2020	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	126287000	USD
CY2019	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	103088000	USD
CY2021	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.30
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CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	289863272	shares
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	284625642	shares
CY2021	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	314610814	shares
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	299371129	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	293796707	shares
CY2021	us-gaap	Net Income Loss NetIncomeLoss	93192000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	126521000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	103096000	USD
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CY2020	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	-2311000	USD
CY2019	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	5959000	USD
CY2021	us-gaap	Other Comprehensive Income Defined Benefit Plans Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansTaxPortionAttributableToParent	-44000	USD
CY2020	us-gaap	Other Comprehensive Income Defined Benefit Plans Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansTaxPortionAttributableToParent	-1000	USD
CY2019	us-gaap	Other Comprehensive Income Defined Benefit Plans Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansTaxPortionAttributableToParent	203000	USD
CY2021	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent	-107000	USD
CY2020	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent	-5000	USD
CY2019	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent	472000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-65541000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-2306000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	5487000	USD
CY2021	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	27651000	USD
CY2020	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	124215000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	108583000	USD
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	147431000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	103096000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	5487000	USD
CY2019	us-gaap	Dividends Dividends	25390000	USD
CY2019	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	2417000	USD
CY2019	bsy	Stock Issued During Period Value Deferred Compensation Plan StockIssuedDuringPeriodValueDeferredCompensationPlan	-5609000	USD
CY2019	bsy	Adjustments To Additional Paid In Capital Deferred Compensation Plan Voluntary Contributions AdjustmentsToAdditionalPaidInCapitalDeferredCompensationPlanVoluntaryContributions	3586000	USD
CY2019	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	8838000	USD
CY2019	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	1303000	USD
CY2019	us-gaap	Stockholders Equity Other StockholdersEquityOther	-38000	USD
CY2019	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	8091000	USD
CY2019	us-gaap	Stock Issued During Period Value Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures	-399000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	334619000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	126521000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-2306000	USD
CY2020	us-gaap	Dividends Dividends	424018000	USD
CY2020	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	6970000	USD
CY2020	bsy	Stock Issued During Period Value Deferred Compensation Plan StockIssuedDuringPeriodValueDeferredCompensationPlan	-4625000	USD
CY2020	bsy	Adjustments To Additional Paid In Capital Deferred Compensation Plan Voluntary Contributions AdjustmentsToAdditionalPaidInCapitalDeferredCompensationPlanVoluntaryContributions	3530000	USD
CY2020	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	1454000	USD
CY2020	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	4356000	USD
CY2020	bsy	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Granted Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestGrantedValue	319000	USD
CY2020	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	25194000	USD
CY2020	us-gaap	Stock Issued During Period Value Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures	-7939000	USD
CY2020Q4	us-gaap	Stockholders Equity StockholdersEquity	341599000	USD
CY2021	us-gaap	Net Income Loss NetIncomeLoss	93192000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-65541000	USD
CY2021	us-gaap	Stock Issued During Period Value Acquisitions StockIssuedDuringPeriodValueAcquisitions	182390000	USD
CY2021	bsy	Adjustments To Additional Paid Capital Purchase Of Capped Call Options Tax AdjustmentsToAdditionalPaidCapitalPurchaseOfCappedCallOptionsTax	12871000	USD
CY2021	bsy	Adjustments To Additional Paid In Capital Purchase Of Capped Call Options AdjustmentsToAdditionalPaidInCapitalPurchaseOfCappedCallOptions	38734000	USD
CY2021	us-gaap	Dividends Dividends	33537000	USD
CY2021	bsy	Stock Issued During Period Value Deferred Compensation Plan StockIssuedDuringPeriodValueDeferredCompensationPlan	-69007000	USD
CY2021	bsy	Adjustments To Additional Paid In Capital Deferred Compensation Plan Voluntary Contributions AdjustmentsToAdditionalPaidInCapitalDeferredCompensationPlanVoluntaryContributions	2619000	USD
CY2021	bsy	Adjustments To Additional Paid In Capital Deferred Compensation Plan Modification AdjustmentsToAdditionalPaidInCapitalDeferredCompensationPlanModification	-4739000	USD
CY2021	us-gaap	Stock Issued During Period Value Issued For Services StockIssuedDuringPeriodValueIssuedForServices	12214000	USD
CY2021	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	3408000	USD
CY2021	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	-32180000	USD
CY2021	bsy	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Granted Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestGrantedValue	450000	USD
CY2021	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	24382000	USD
CY2021	us-gaap	Stock Issued During Period Value Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures	-7294000	USD
CY2021Q4	us-gaap	Stockholders Equity StockholdersEquity	409222000	USD
CY2021	us-gaap	Net Income Loss NetIncomeLoss	93192000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	126521000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	103096000	USD
CY2021	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	52793000	USD
CY2020	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	36117000	USD
CY2019	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	32160000	USD
CY2021	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	1203000	USD
CY2020	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	-1000000	USD
CY2019	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	862000	USD
CY2021	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-19745000	USD
CY2020	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	16246000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	732000	USD
CY2021	us-gaap	Share Based Compensation ShareBasedCompensation	49045000	USD
CY2020	us-gaap	Share Based Compensation ShareBasedCompensation	32114000	USD
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	8091000	USD
CY2021	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	5955000	USD
CY2020	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	985000	USD
CY2019	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	553000	USD
CY2021	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	9770000	USD
CY2020	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	347000	USD
CY2019	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	-159000	USD
CY2021	us-gaap	Business Combination Contingent Consideration Arrangements Change In Amount Of Contingent Consideration Liability1 BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1	550000	USD
CY2020	us-gaap	Business Combination Contingent Consideration Arrangements Change In Amount Of Contingent Consideration Liability1 BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1	-1340000	USD
CY2019	us-gaap	Business Combination Contingent Consideration Arrangements Change In Amount Of Contingent Consideration Liability1 BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1	62000	USD
CY2021	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-64000	USD
CY2020	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	24502000	USD
CY2019	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-5311000	USD
CY2021	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-3585000	USD
CY2020	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-2474000	USD
CY2019	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-1275000	USD
CY2021	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	35519000	USD
CY2020	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-12388000	USD
CY2019	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	21152000	USD
CY2021	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-14260000	USD
CY2020	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-11705000	USD
CY2019	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	668000	USD
CY2021	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	50077000	USD
CY2020	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	47656000	USD
CY2019	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	41880000	USD
CY2021	bsy	Deferred Compensation Plan Noncash Expense DeferredCompensationPlanNoncashExpense	92926000	USD
CY2020	bsy	Deferred Compensation Plan Noncash Expense DeferredCompensationPlanNoncashExpense	3706000	USD
CY2019	bsy	Deferred Compensation Plan Noncash Expense DeferredCompensationPlanNoncashExpense	3994000	USD
CY2021	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	5340000	USD
CY2020	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	-565000	USD
CY2019	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	-268000	USD
CY2021	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	-15932000	USD
CY2020	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	-3818000	USD
CY2019	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	-5314000	USD
CY2021	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	288024000	USD
CY2020	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	258340000	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	170773000	USD
CY2021	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	17539000	USD
CY2020	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	16447000	USD
CY2019	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	16639000	USD
CY2021	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	1034983000	USD
CY2020	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	93032000	USD
CY2019	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	34054000	USD
CY2021	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	4081000	USD
CY2020	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	7854000	USD
CY2019	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	3000000	USD
CY2021	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-1056603000	USD
CY2020	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-117333000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-53693000	USD
CY2021	us-gaap	Proceeds From Long Term Lines Of Credit ProceedsFromLongTermLinesOfCredit	745310000	USD
CY2020	us-gaap	Proceeds From Long Term Lines Of Credit ProceedsFromLongTermLinesOfCredit	550875000	USD
CY2019	us-gaap	Proceeds From Long Term Lines Of Credit ProceedsFromLongTermLinesOfCredit	191250000	USD
CY2021	us-gaap	Repayments Of Long Term Lines Of Credit RepaymentsOfLongTermLinesOfCredit	991310000	USD
CY2020	us-gaap	Repayments Of Long Term Lines Of Credit RepaymentsOfLongTermLinesOfCredit	538625000	USD
CY2019	us-gaap	Repayments Of Long Term Lines Of Credit RepaymentsOfLongTermLinesOfCredit	216250000	USD
CY2021	us-gaap	Proceeds From Convertible Debt ProceedsFromConvertibleDebt	1233377000	USD
CY2020	us-gaap	Proceeds From Convertible Debt ProceedsFromConvertibleDebt	0	USD
CY2019	us-gaap	Proceeds From Convertible Debt ProceedsFromConvertibleDebt	0	USD
CY2021	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	5643000	USD
CY2020	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	432000	USD
CY2019	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	0	USD
CY2021	bsy	Purchase Of Capped Call Options PurchaseOfCappedCallOptions	51605000	USD
CY2020	bsy	Purchase Of Capped Call Options PurchaseOfCappedCallOptions	0	USD
CY2019	bsy	Purchase Of Capped Call Options PurchaseOfCappedCallOptions	0	USD
CY2021	us-gaap	Proceeds From Issuance Of Secured Debt ProceedsFromIssuanceOfSecuredDebt	199505000	USD
CY2020	us-gaap	Proceeds From Issuance Of Secured Debt ProceedsFromIssuanceOfSecuredDebt	125000000	USD
CY2019	us-gaap	Proceeds From Issuance Of Secured Debt ProceedsFromIssuanceOfSecuredDebt	0	USD
CY2021	us-gaap	Repayments Of Secured Debt RepaymentsOfSecuredDebt	0	USD
CY2020	us-gaap	Repayments Of Secured Debt RepaymentsOfSecuredDebt	125000000	USD
CY2019	us-gaap	Repayments Of Secured Debt RepaymentsOfSecuredDebt	0	USD
CY2021	bsy	Finance Lease Payments Financing Activities FinanceLeasePaymentsFinancingActivities	197000	USD
CY2020	bsy	Finance Lease Payments Financing Activities FinanceLeasePaymentsFinancingActivities	189000	USD
CY2019	bsy	Finance Lease Payments Financing Activities FinanceLeasePaymentsFinancingActivities	0	USD
CY2021	us-gaap	Repayments Of Assumed Debt RepaymentsOfAssumedDebt	2371000	USD
CY2020	us-gaap	Repayments Of Assumed Debt RepaymentsOfAssumedDebt	3425000	USD
CY2019	us-gaap	Repayments Of Assumed Debt RepaymentsOfAssumedDebt	11029000	USD
CY2021	us-gaap	Payments Of Stock Issuance Costs PaymentsOfStockIssuanceCosts	0	USD
CY2020	us-gaap	Payments Of Stock Issuance Costs PaymentsOfStockIssuanceCosts	1373000	USD
CY2019	us-gaap	Payments Of Stock Issuance Costs PaymentsOfStockIssuanceCosts	0	USD
CY2021	us-gaap	Payments Of Dividends PaymentsOfDividends	33396000	USD
CY2020	us-gaap	Payments Of Dividends PaymentsOfDividends	422646000	USD
CY2019	us-gaap	Payments Of Dividends PaymentsOfDividends	24989000	USD
CY2021	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	120539000	USD
CY2020	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	83975000	USD
CY2019	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	24166000	USD
CY2021	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	0	USD
CY2020	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	58349000	USD
CY2019	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	4510000	USD
CY2021	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	3846000	USD
CY2020	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	0	USD
CY2019	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	0	USD
CY2021	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions	5605000	USD
CY2020	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions	9128000	USD
CY2019	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions	3626000	USD
CY2021	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	982582000	USD
CY2020	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-136511000	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-77048000	USD
CY2021	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	-6672000	USD
CY2020	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	-3591000	USD
CY2019	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	-114000	USD
CY2021	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	207331000	USD
CY2020	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	905000	USD
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	39918000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	122006000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	121101000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	81183000	USD
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	329337000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	122006000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	121101000	USD
CY2021	us-gaap	Income Taxes Paid IncomeTaxesPaid	40203000	USD
CY2020	us-gaap	Income Taxes Paid IncomeTaxesPaid	28986000	USD
CY2019	us-gaap	Income Taxes Paid IncomeTaxesPaid	27907000	USD
CY2021	us-gaap	Proceeds From Income Tax Refunds ProceedsFromIncomeTaxRefunds	9372000	USD
CY2020	us-gaap	Proceeds From Income Tax Refunds ProceedsFromIncomeTaxRefunds	3863000	USD
CY2019	us-gaap	Proceeds From Income Tax Refunds ProceedsFromIncomeTaxRefunds	1752000	USD
CY2021	us-gaap	Interest Paid Net InterestPaidNet	4631000	USD
CY2020	us-gaap	Interest Paid Net InterestPaidNet	8012000	USD
CY2019	us-gaap	Interest Paid Net InterestPaidNet	9221000	USD
CY2021	bsy	Noncash Or Part Noncash Acquisition Noncash Financial Or Equity Instrument Consideration NoncashOrPartNoncashAcquisitionNoncashFinancialOrEquityInstrumentConsideration	182390000	USD
CY2020	bsy	Noncash Or Part Noncash Acquisition Noncash Financial Or Equity Instrument Consideration NoncashOrPartNoncashAcquisitionNoncashFinancialOrEquityInstrumentConsideration	0	USD
CY2019	bsy	Noncash Or Part Noncash Acquisition Noncash Financial Or Equity Instrument Consideration NoncashOrPartNoncashAcquisitionNoncashFinancialOrEquityInstrumentConsideration	0	USD
CY2021	bsy	Noncash Or Part Noncash Contingent Acquisition Consideration NoncashOrPartNoncashContingentAcquisitionConsideration	4544000	USD
CY2020	bsy	Noncash Or Part Noncash Contingent Acquisition Consideration NoncashOrPartNoncashContingentAcquisitionConsideration	2380000	USD
CY2019	bsy	Noncash Or Part Noncash Contingent Acquisition Consideration NoncashOrPartNoncashContingentAcquisitionConsideration	4498000	USD
CY2021	bsy	Noncash Or Part Noncash Deferred Acquisition Consideration NoncashOrPartNoncashDeferredAcquisitionConsideration	10090000	USD
CY2020	bsy	Noncash Or Part Noncash Deferred Acquisition Consideration NoncashOrPartNoncashDeferredAcquisitionConsideration	1416000	USD
CY2019	bsy	Noncash Or Part Noncash Deferred Acquisition Consideration NoncashOrPartNoncashDeferredAcquisitionConsideration	0	USD
CY2021	bsy	Term Loan Expenses Accrued In Period TermLoanExpensesAccruedInPeriod	45000	USD
CY2020	bsy	Term Loan Expenses Accrued In Period TermLoanExpensesAccruedInPeriod	0	USD
CY2019	bsy	Term Loan Expenses Accrued In Period TermLoanExpensesAccruedInPeriod	0	USD
CY2021	bsy	Share Based Compensation Arrangement By Share Based Payment Award Settled In Shares ShareBasedCompensationArrangementByShareBasedPaymentAwardSettledInShares	20953000	USD
CY2020	bsy	Share Based Compensation Arrangement By Share Based Payment Award Settled In Shares ShareBasedCompensationArrangementByShareBasedPaymentAwardSettledInShares	0	USD
CY2019	bsy	Share Based Compensation Arrangement By Share Based Payment Award Settled In Shares ShareBasedCompensationArrangementByShareBasedPaymentAwardSettledInShares	0	USD
CY2021	bsy	Voluntary Deferred Compensation Plan Contributions During Period VoluntaryDeferredCompensationPlanContributionsDuringPeriod	2619000	USD
CY2020	bsy	Voluntary Deferred Compensation Plan Contributions During Period VoluntaryDeferredCompensationPlanContributionsDuringPeriod	3530000	USD
CY2019	bsy	Voluntary Deferred Compensation Plan Contributions During Period VoluntaryDeferredCompensationPlanContributionsDuringPeriod	3586000	USD
CY2021	us-gaap	Use Of Estimates UseOfEstimates	<div style="margin-bottom:12pt;text-align:justify;text-indent:18pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%">Use of Estimates</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%"> — The preparation of consolidated financial statements and related disclosures in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the dates of the consolidated financial statements and the reported amounts of revenues and expenses during the reporting periods. Actual results could differ materially from these estimates. In March 2020, the World Health Organization declared a global pandemic related to the rapidly growing outbreak of the disease COVID‑19, caused by a novel strain of coronavirus, SARS‑CoV‑2. The COVID-19 pandemic has created and may continue to create significant uncertainty in the macroeconomic environment which, in addition to other unforeseen effects of this pandemic, may adversely impact our results of operations. As the COVID-19 pandemic continues to develop, many of our estimates could require increased judgment and carry a higher degree of variability and volatility. As events continue to evolve our estimates may change materially in future periods.</span></div><div style="margin-bottom:12pt;text-align:justify;text-indent:18pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Examples of significant estimates and assumptions made by management include revenue recognition, the fair value of acquired assets and liabilities, the fair value of stock consideration in conjunction with business combinations, the fair value of deferred compensation plan liabilities, the fair value of derivative financial instruments, the fair value of common stock (prior to the Company’s initial public offering (“IPO”)), operating lease assets and liabilities, useful lives for depreciation and amortization, impairment of goodwill and intangible assets, valuation allowances for tax assets, and accruals for uncertain tax positions.</span></div>
CY2020Q3	us-gaap	Dividends Payable Amount Per Share DividendsPayableAmountPerShare	1.50
CY2020Q3	us-gaap	Dividends Payable Current And Noncurrent DividendsPayableCurrentAndNoncurrent	392489000	USD
CY2020Q3	bsy	Share Based Payment Arrangement Option Exercise Price Reduction ShareBasedPaymentArrangementOptionExercisePriceReduction	1.50
CY2020Q3	us-gaap	Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Lower Range Limit ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit	0.01
CY2021	us-gaap	Capitalized Computer Software Additions CapitalizedComputerSoftwareAdditions	6608000	USD
CY2020	us-gaap	Capitalized Computer Software Additions CapitalizedComputerSoftwareAdditions	7809000	USD
CY2019	us-gaap	Capitalized Computer Software Additions CapitalizedComputerSoftwareAdditions	6060000	USD
CY2021	us-gaap	Capitalized Computer Software Amortization1 CapitalizedComputerSoftwareAmortization1	7020000	USD
CY2020	us-gaap	Capitalized Computer Software Amortization1 CapitalizedComputerSoftwareAmortization1	4699000	USD
CY2019	us-gaap	Capitalized Computer Software Amortization1 CapitalizedComputerSoftwareAmortization1	3516000	USD
CY2021	us-gaap	Advertising Expense AdvertisingExpense	2396000	USD
CY2020	us-gaap	Advertising Expense AdvertisingExpense	1726000	USD
CY2019	us-gaap	Advertising Expense AdvertisingExpense	1579000	USD
CY2021	us-gaap	Derivatives Methods Of Accounting Nonhedging Derivatives DerivativesMethodsOfAccountingNonhedgingDerivatives	<div style="margin-bottom:12pt;text-align:justify;text-indent:18pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%">Derivative Arrangements</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%"> — The Company records derivative instruments as an asset or liability measured at fair value and depending on the nature of the hedge, the corresponding changes in the fair value of these instruments are recorded in the consolidated statements of operations or comprehensive income. If the derivative is determined to be a hedge, changes in the fair value of the derivative are offset against the change in the fair value of the hedged assets or liabilities through the consolidated statements of operations or recognized in </span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:400;line-height:120%">Other comprehensive income (loss), net of taxes</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%"> until the hedged item is recognized in the consolidated statements of operations. The ineffective portion of a derivative’s change in fair value is recognized in earnings. Also, changes in the entire fair value of a derivative that is not designated as a hedge are recognized in earnings.</span></div><div style="margin-bottom:12pt;text-align:justify;text-indent:18pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">On March 31, 2020, the Company entered into an interest rate swap with a notional amount of $200,000 and a ten‑year term to reduce the interest rate risk associated with the Company’s Credit Facility (see Note 10). The interest rate swap is not designated as a hedging instrument for accounting purposes. The Company accounts for the interest rate swap as either an asset or a liability on the consolidated balance sheets and carries the derivative at fair value. Gains and losses from the change in fair value are recognized in </span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:400;line-height:120%">Other income (expense), net </span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">and payments related to the interest rate swap are recognized in </span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:400;line-height:120%">Interest expense, net </span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">in the consolidated statements of operations. The bank counterparty to the derivative potentially exposes the Company to credit-related losses in the event of nonperformance. To mitigate that risk, the Company only contracts with counterparties who meet the Company’s minimum requirements under its counterparty risk assessment process. The Company monitors counterparty risk on at least a quarterly basis and adjusts its exposure as necessary. The Company does not enter into derivative instrument transactions for trading or speculative purposes.</span></div>
CY2020Q1	us-gaap	Derivative Term Of Contract DerivativeTermOfContract	P10Y
CY2020Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	5759000	USD
CY2019Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	7274000	USD
CY2021	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	1203000	USD
CY2020	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	-1000000	USD
CY2021	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	700000	USD
CY2020	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	812000	USD
CY2021	bsy	Accounts Receivable Allowance For Credit Loss Foreign Currency Translation Adjustments AccountsReceivableAllowanceForCreditLossForeignCurrencyTranslationAdjustments	279000	USD
CY2020	bsy	Accounts Receivable Allowance For Credit Loss Foreign Currency Translation Adjustments AccountsReceivableAllowanceForCreditLossForeignCurrencyTranslationAdjustments	297000	USD
CY2021Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	6541000	USD
CY2020Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	5759000	USD
CY2019	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	0	USD
CY2021	us-gaap	Concentration Risk Credit Risk ConcentrationRiskCreditRisk	Concentration of Credit Risk — Financial instruments that potentially subject the Company to concentration of credit risk consist primarily of its cash and cash equivalents and receivables. To reduce credit risk, the Company performs ongoing credit evaluations of its customers and limits the amount of credit extended when deemed necessary. Generally, the Company requires no collateral from its customers. The Company maintains an allowance for potential credit losses, but historically has not experienced any significant losses related to individual customers or groups of customers in any particular industry or geographic area.The Company’s cash and cash equivalents are deposited with financial institutions and invested in money market funds that the Company believes are of high credit quality.
CY2020	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2021	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2019	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2021	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	0	USD
CY2020	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	0	USD
CY2021	us-gaap	Guarantees Indemnifications And Warranties Policies GuaranteesIndemnificationsAndWarrantiesPolicies	<span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%">Guarantees</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%"> — The Company’s software license agreements typically provide for indemnification of customers for intellectual property infringement claims. The Company also warrants to customers, when requested, that its software products operate substantially in accordance with standard specifications for a limited period of time. The Company has not incurred significant obligations under customer indemnification or warranty provisions historically and does not expect to incur significant obligations in the future. Accordingly, the Company does not maintain accruals for potential customer indemnification or warranty‑related obligations.</span>
CY2021Q4	us-gaap	Contract With Customer Asset Net Current ContractWithCustomerAssetNetCurrent	336000	USD
CY2020Q4	us-gaap	Contract With Customer Asset Net Current ContractWithCustomerAssetNetCurrent	446000	USD
CY2021Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	232593000	USD
CY2020Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	209314000	USD
CY2020	us-gaap	Capitalized Contract Cost Impairment Loss CapitalizedContractCostImpairmentLoss	0	USD
CY2021	us-gaap	Capitalized Contract Cost Impairment Loss CapitalizedContractCostImpairmentLoss	0	USD
CY2021	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	183997000	USD
CY2021	bsy	Contract With Customer Liability Additions ContractWithCustomerLiabilityAdditions	215947000	USD
CY2020	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	203682000	USD
CY2020	bsy	Contract With Customer Liability Additions ContractWithCustomerLiabilityAdditions	193999000	USD
CY2021Q4	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	232593000	USD
CY2021Q4	us-gaap	Revenue Remaining Performance Obligation Percentage RevenueRemainingPerformanceObligationPercentage	0.966
CY2021Q4	us-gaap	Revenue Remaining Performance Obligation Expected Timing Of Satisfaction Period1 RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1	P12M
CY2021	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	965046000	USD
CY2020	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	801544000	USD
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	736654000	USD
CY2021	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	965046000	USD
CY2020	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	801544000	USD
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	736654000	USD
CY2021Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset Before Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization	104060000	USD
CY2020Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset Before Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization	97256000	USD
CY2021Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization	72237000	USD
CY2020Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization	68842000	USD
CY2021Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset After Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization	31823000	USD
CY2020Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset After Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization	28414000	USD
CY2021	us-gaap	Goodwill Foreign Currency Translation Gain Loss GoodwillForeignCurrencyTranslationGainLoss	-58408000	USD
CY2021	us-gaap	Goodwill Other Increase Decrease GoodwillOtherIncreaseDecrease	-639000	USD
CY2021Q4	us-gaap	Goodwill Goodwill	1588477000	USD
CY2021	us-gaap	Depreciation Nonproduction DepreciationNonproduction	11217000	USD
CY2020	us-gaap	Depreciation Nonproduction DepreciationNonproduction	10166000	USD
CY2019	us-gaap	Depreciation Nonproduction DepreciationNonproduction	9813000	USD
CY2019Q4	us-gaap	Goodwill Goodwill	480065000	USD
CY2020	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	81990000	USD
CY2020	us-gaap	Goodwill Foreign Currency Translation Gain Loss GoodwillForeignCurrencyTranslationGainLoss	19195000	USD
CY2020	us-gaap	Goodwill Other Increase Decrease GoodwillOtherIncreaseDecrease	-76000	USD
CY2020Q4	us-gaap	Goodwill Goodwill	581174000	USD
CY2021	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	1066350000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	410343000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	168056000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	242287000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	191659000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	146032000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	45627000	USD
CY2021Q4	us-gaap	Intangible Assets Gross Excluding Goodwill IntangibleAssetsGrossExcludingGoodwill	413890000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	168056000	USD
CY2021Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	245834000	USD
CY2020Q4	us-gaap	Intangible Assets Gross Excluding Goodwill IntangibleAssetsGrossExcludingGoodwill	191659000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	146032000	USD
CY2020Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	45627000	USD
CY2021	us-gaap	Cost Of Goods And Services Sold Amortization CostOfGoodsAndServicesSoldAmortization	8125000	USD
CY2020	us-gaap	Cost Of Goods And Services Sold Amortization CostOfGoodsAndServicesSoldAmortization	4981000	USD
CY2019	us-gaap	Cost Of Goods And Services Sold Amortization CostOfGoodsAndServicesSoldAmortization	3795000	USD
CY2021	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	25601000	USD
CY2020	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	15352000	USD
CY2019	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	14213000	USD
CY2021	bsy	Cost Amortization And Amortization Of Intangible Assets CostAmortizationAndAmortizationOfIntangibleAssets	33726000	USD
CY2020	bsy	Cost Amortization And Amortization Of Intangible Assets CostAmortizationAndAmortizationOfIntangibleAssets	20333000	USD
CY2019	bsy	Cost Amortization And Amortization Of Intangible Assets CostAmortizationAndAmortizationOfIntangibleAssets	18008000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	43782000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	37752000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	31568000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	28787000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	22693000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense After Year Five FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive	77705000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	242287000	USD
CY2021Q4	us-gaap	Equity Securities Without Readily Determinable Fair Value Amount EquitySecuritiesWithoutReadilyDeterminableFairValueAmount	6438000	USD
CY2020Q4	us-gaap	Equity Securities Without Readily Determinable Fair Value Amount EquitySecuritiesWithoutReadilyDeterminableFairValueAmount	3440000	USD
CY2021Q4	us-gaap	Equity Method Investments EquityMethodInvestments	0	USD
CY2020Q4	us-gaap	Equity Method Investments EquityMethodInvestments	2251000	USD
CY2021Q4	us-gaap	Investments Investments	6438000	USD
CY2020Q4	us-gaap	Investments Investments	5691000	USD
CY2021	bsy	Payments To Acquire Cost Method Investments PaymentsToAcquireCostMethodInvestments	2781000	USD
CY2020	bsy	Payments To Acquire Cost Method Investments PaymentsToAcquireCostMethodInvestments	3440000	USD
CY2021	us-gaap	Operating Lease Cost OperatingLeaseCost	19425000	USD
CY2020	us-gaap	Operating Lease Cost OperatingLeaseCost	18194000	USD
CY2021	us-gaap	Variable Lease Cost VariableLeaseCost	4151000	USD
CY2020	us-gaap	Variable Lease Cost VariableLeaseCost	3881000	USD
CY2021	us-gaap	Short Term Lease Cost ShortTermLeaseCost	21000	USD
CY2020	us-gaap	Short Term Lease Cost ShortTermLeaseCost	399000	USD
CY2021	us-gaap	Lease Cost LeaseCost	23597000	USD
CY2020	us-gaap	Lease Cost LeaseCost	22474000	USD
CY2021	us-gaap	Payments For Rent PaymentsForRent	18636000	USD
CY2020	us-gaap	Payments For Rent PaymentsForRent	17417000	USD
CY2019	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	17036000	USD
CY2021	us-gaap	Operating Lease Payments OperatingLeasePayments	19636000	USD
CY2020	us-gaap	Operating Lease Payments OperatingLeasePayments	18384000	USD
CY2021	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	12842000	USD
CY2020	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	15522000	USD
CY2021Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P4Y1M6D
CY2020Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P3Y8M12D
CY2021Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.025
CY2020Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.021
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	18411000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	13212000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	8645000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	6398000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	3972000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	5262000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	55900000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	3144000	USD
CY2021Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	52756000	USD
CY2021Q4	bsy	Lessee Operating Lease Lease Not Yet Commenced Liability Lease Payments LesseeOperatingLeaseLeaseNotYetCommencedLiabilityLeasePayments	1383000	USD
CY2021Q4	us-gaap	Finance Lease Right Of Use Asset Before Accumulated Amortization FinanceLeaseRightOfUseAssetBeforeAccumulatedAmortization	484000	USD
CY2020Q4	us-gaap	Finance Lease Right Of Use Asset Before Accumulated Amortization FinanceLeaseRightOfUseAssetBeforeAccumulatedAmortization	572000	USD
CY2021Q4	us-gaap	Finance Lease Right Of Use Asset Accumulated Amortization FinanceLeaseRightOfUseAssetAccumulatedAmortization	453000	USD
CY2020Q4	us-gaap	Finance Lease Right Of Use Asset Accumulated Amortization FinanceLeaseRightOfUseAssetAccumulatedAmortization	229000	USD
CY2021Q4	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	31000	USD
CY2020Q4	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	343000	USD
CY2021Q4	us-gaap	Finance Lease Liability Current FinanceLeaseLiabilityCurrent	98000	USD
CY2020Q4	us-gaap	Finance Lease Liability Current FinanceLeaseLiabilityCurrent	197000	USD
CY2021Q4	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent	0	USD
CY2020Q4	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent	99000	USD
CY2021Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	98000	USD
CY2020Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	296000	USD
CY2021Q4	us-gaap	Deposit Liability Current DepositLiabilityCurrent	162046000	USD
CY2020Q4	us-gaap	Deposit Liability Current DepositLiabilityCurrent	110291000	USD
CY2021Q4	us-gaap	Accrued Employee Benefits Current AccruedEmployeeBenefitsCurrent	37725000	USD
CY2020Q4	us-gaap	Accrued Employee Benefits Current AccruedEmployeeBenefitsCurrent	22131000	USD
CY2021Q4	us-gaap	Accrued Salaries Current AccruedSalariesCurrent	36656000	USD
CY2020Q4	us-gaap	Accrued Salaries Current AccruedSalariesCurrent	36613000	USD
CY2021Q4	bsy	Due To Customers DueToCustomers	12798000	USD
CY2020Q4	bsy	Due To Customers DueToCustomers	9869000	USD
CY2021Q4	us-gaap	Accrued Bonuses Current AccruedBonusesCurrent	9461000	USD
CY2020Q4	us-gaap	Accrued Bonuses Current AccruedBonusesCurrent	5599000	USD
CY2021Q4	us-gaap	Sales And Excise Tax Payable Current SalesAndExciseTaxPayableCurrent	7520000	USD
CY2020Q4	us-gaap	Sales And Excise Tax Payable Current SalesAndExciseTaxPayableCurrent	6361000	USD
CY2021Q4	us-gaap	Deferred Compensation Liability Current DeferredCompensationLiabilityCurrent	7309000	USD
CY2020Q4	us-gaap	Deferred Compensation Liability Current DeferredCompensationLiabilityCurrent	169000	USD
CY2021Q4	us-gaap	Accrued Professional Fees Current AccruedProfessionalFeesCurrent	6940000	USD
CY2020Q4	us-gaap	Accrued Professional Fees Current AccruedProfessionalFeesCurrent	4210000	USD
CY2021Q4	bsy	Accrued Cloud Provisioning Costs Current AccruedCloudProvisioningCostsCurrent	5862000	USD
CY2020Q4	bsy	Accrued Cloud Provisioning Costs Current AccruedCloudProvisioningCostsCurrent	7988000	USD
CY2021Q4	us-gaap	Business Combination Contingent Consideration Liability Current BusinessCombinationContingentConsiderationLiabilityCurrent	5382000	USD
CY2020Q4	us-gaap	Business Combination Contingent Consideration Liability Current BusinessCombinationContingentConsiderationLiabilityCurrent	2884000	USD
CY2021Q4	us-gaap	Other Employee Related Liabilities Current OtherEmployeeRelatedLiabilitiesCurrent	4818000	USD
CY2020Q4	us-gaap	Other Employee Related Liabilities Current OtherEmployeeRelatedLiabilitiesCurrent	0	USD
CY2021Q4	bsy	Business Combination Consideration Payable Current BusinessCombinationConsiderationPayableCurrent	4751000	USD
CY2020Q4	bsy	Business Combination Consideration Payable Current BusinessCombinationConsiderationPayableCurrent	685000	USD
CY2021Q4	bsy	Accrued Facility Costs Current AccruedFacilityCostsCurrent	2194000	USD
CY2020Q4	bsy	Accrued Facility Costs Current AccruedFacilityCostsCurrent	2095000	USD
CY2021Q4	us-gaap	Restructuring Reserve Current RestructuringReserveCurrent	664000	USD
CY2020Q4	us-gaap	Restructuring Reserve Current RestructuringReserveCurrent	7209000	USD
CY2021Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	19477000	USD
CY2020Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	10689000	USD
CY2021Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	323603000	USD
CY2020Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	226793000	USD
CY2021Q4	us-gaap	Long Term Debt LongTermDebt	1435992000	USD
CY2020Q4	us-gaap	Long Term Debt LongTermDebt	246000000	USD
CY2021Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	5000000	USD
CY2021Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	690000000	USD
CY2020Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	0	USD
CY2021Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	1430992000	USD
CY2020Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	246000000	USD
CY2021	us-gaap	Interest Expense Other InterestExpenseOther	108000	USD
CY2020	us-gaap	Interest Expense Other InterestExpenseOther	50000	USD
CY2019	us-gaap	Interest Expense Other InterestExpenseOther	207000	USD
CY2021	us-gaap	Interest Expense InterestExpense	12797000	USD
CY2020	us-gaap	Interest Expense InterestExpense	7913000	USD
CY2019	us-gaap	Interest Expense InterestExpense	9731000	USD
CY2021Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	5000000	USD
CY2021Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	5000000	USD
CY2021Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	10000000	USD
CY2021Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	180000000	USD
CY2021Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal After Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive	575000000	USD
CY2021Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	1465000000	USD
CY2020Q3	bsy	Number Of Trading Days Prior To End Of Applicable Quarter Shares Determined Upon Election By Volume Weighted Average Price NumberOfTradingDaysPriorToEndOfApplicableQuarterSharesDeterminedUponElectionByVolumeWeightedAveragePrice	10000	day
CY2020Q3	bsy	Number Of Trading Days After The End Of Applicable Quarter Shares Determined Upon Election By Volume Weighted Average Price NumberOfTradingDaysAfterTheEndOfApplicableQuarterSharesDeterminedUponElectionByVolumeWeightedAveragePrice	10	day
CY2020Q3	bsy	Non Deferred Incentive Bonus Threshold For Pro Rata Adjustment NonDeferredIncentiveBonusThresholdForProRataAdjustment	7500000	USD
CY2020Q3	bsy	Non Deferred Incentive Bonus Threshold For Pro Rata Adjustment NonDeferredIncentiveBonusThresholdForProRataAdjustment	7500000	USD
CY2020Q3	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	100000000	shares
CY2020Q3	bsy	Threshold Of Affirmative Votes Of Class A Common Stock Outstanding For Automatic Conversion To Class B Common Stock ThresholdOfAffirmativeVotesOfClassACommonStockOutstandingForAutomaticConversionToClassBCommonStock	0.90
CY2020Q3	bsy	Threshold Of Bentley Family Ownership Of Issued And Outstanding Class B Common Stock Fully Diluted Basis Automatic Conversion Of Class A Common Stock ThresholdOfBentleyFamilyOwnershipOfIssuedAndOutstandingClassBCommonStockFullyDilutedBasisAutomaticConversionOfClassACommonStock	0.20
CY2021Q4	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.030
CY2021Q4	us-gaap	Dividends Common Stock DividendsCommonStock	8461000	USD
CY2021Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.030
CY2021Q3	us-gaap	Dividends Common Stock DividendsCommonStock	8485000	USD
CY2021Q2	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.030
CY2021Q2	us-gaap	Dividends Common Stock DividendsCommonStock	8372000	USD
CY2021Q1	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.030
CY2021Q1	us-gaap	Dividends Common Stock DividendsCommonStock	8219000	USD
CY2021	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.120
CY2021	us-gaap	Dividends Common Stock DividendsCommonStock	33537000	USD
CY2020Q4	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.030
CY2020Q4	us-gaap	Dividends Common Stock DividendsCommonStock	8270000	USD
CY2020Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.530
CY2020Q3	us-gaap	Dividends Common Stock DividendsCommonStock	400311000	USD
CY2020Q2	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.030
CY2020Q2	us-gaap	Dividends Common Stock DividendsCommonStock	7771000	USD
CY2020Q1	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.030
CY2020Q1	us-gaap	Dividends Common Stock DividendsCommonStock	7666000	USD
CY2020	us-gaap	Dividends Common Stock DividendsCommonStock	424018000	USD
CY2020	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.620
CY2019Q4	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.025
CY2019Q4	us-gaap	Dividends Common Stock DividendsCommonStock	6367000	USD
CY2019Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.025
CY2019Q3	us-gaap	Dividends Common Stock DividendsCommonStock	6380000	USD
CY2019Q2	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.025
CY2019Q2	us-gaap	Dividends Common Stock DividendsCommonStock	6375000	USD
CY2019Q1	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.025
CY2019Q1	us-gaap	Dividends Common Stock DividendsCommonStock	6268000	USD
CY2019	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.100
CY2019	us-gaap	Dividends Common Stock DividendsCommonStock	25390000	USD
CY2020Q3	us-gaap	Dividends Payable Amount Per Share DividendsPayableAmountPerShare	1.50
CY2020Q3	us-gaap	Dividends Payable Current And Noncurrent DividendsPayableCurrentAndNoncurrent	392489000	USD
CY2021Q4	us-gaap	Other Employee Related Liabilities Current OtherEmployeeRelatedLiabilitiesCurrent	4818000	USD
CY2020Q4	us-gaap	Other Employee Related Liabilities Current OtherEmployeeRelatedLiabilitiesCurrent	0	USD
CY2019	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	5284000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	-203000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	5487000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	-2305000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	1000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-2306000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	-65497000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	44000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-65541000	USD
CY2021	bsy	Put Provision Start Period Number Of Months Since Exercise PutProvisionStartPeriodNumberOfMonthsSinceExercise	P6M
CY2021	bsy	Put Provision End Period Number Of Days After Start Period PutProvisionEndPeriodNumberOfDaysAfterStartPeriod	P30D
CY2021	bsy	Call Provision Exercise Period CallProvisionExercisePeriod	P7M
CY2020Q3	us-gaap	Dividends Payable Amount Per Share DividendsPayableAmountPerShare	1.50
CY2020Q3	bsy	Share Based Payment Arrangement Option Exercise Price Reduction ShareBasedPaymentArrangementOptionExercisePriceReduction	1.50
CY2020Q3	us-gaap	Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Lower Range Limit ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit	0.01
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Discount From Market Price Offering Date ShareBasedCompensationArrangementByShareBasedPaymentAwardDiscountFromMarketPriceOfferingDate	0.85
CY2021	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	49045000	USD
CY2020	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	33051000	USD
CY2019	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	8091000	USD
CY2021Q4	bsy	Share Based Payment Arrangement Expense Accrued ShareBasedPaymentArrangementExpenseAccrued	6749000	USD
CY2020Q4	bsy	Share Based Payment Arrangement Expense Accrued ShareBasedPaymentArrangementExpenseAccrued	6835000	USD
CY2021	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	49045000	USD
CY2020	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	33051000	USD
CY2019	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	8091000	USD
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Discount From Market Price Purchase Date ShareBasedCompensationArrangementByShareBasedPaymentAwardDiscountFromMarketPricePurchaseDate	0.85
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	-14544000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	61470000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	61691000	USD
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	107873000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	106150000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	66418000	USD
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	93329000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	167620000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	128109000	USD
CY2021	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-770000	USD
CY2020	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	11094000	USD
CY2019	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	7696000	USD
CY2021	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	-163000	USD
CY2020	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	3597000	USD
CY2019	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	2486000	USD
CY2021	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	17230000	USD
CY2020	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	7688000	USD
CY2019	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	12824000	USD
CY2021	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	16297000	USD
CY2020	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	22379000	USD
CY2019	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	23006000	USD
CY2021	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-15182000	USD
CY2020	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	5194000	USD
CY2019	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	2389000	USD
CY2021	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-3660000	USD
CY2020	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	1272000	USD
CY2019	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	412000	USD
CY2021	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-903000	USD
CY2020	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	9780000	USD
CY2019	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-2069000	USD
CY2021	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-19745000	USD
CY2020	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	16246000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	732000	USD
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-3448000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	38625000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	23738000	USD
CY2021	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2020	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2019	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2021	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	-0.027
CY2020	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.029
CY2019	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.020
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost	0.525
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost	0.052
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost	0.023
CY2021	bsy	Effective Income Tax Rate Reconciliation Nondeductible Expense Officer Compensation Percent EffectiveIncomeTaxRateReconciliationNondeductibleExpenseOfficerCompensationPercent	-0.366
CY2020	bsy	Effective Income Tax Rate Reconciliation Nondeductible Expense Officer Compensation Percent EffectiveIncomeTaxRateReconciliationNondeductibleExpenseOfficerCompensationPercent	-0.046
CY2019	bsy	Effective Income Tax Rate Reconciliation Nondeductible Expense Officer Compensation Percent EffectiveIncomeTaxRateReconciliationNondeductibleExpenseOfficerCompensationPercent	0
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits EffectiveIncomeTaxRateReconciliationTaxCredits	0.061
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits EffectiveIncomeTaxRateReconciliationTaxCredits	0.021
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits EffectiveIncomeTaxRateReconciliationTaxCredits	0.036
CY2021	bsy	Effective Income Tax Rate Reconciliation Transaction Costs Percent EffectiveIncomeTaxRateReconciliationTransactionCostsPercent	0.039
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CY2020	us-gaap	Restructuring Reserve Translation And Other Adjustment RestructuringReserveTranslationAndOtherAdjustment	269000	USD
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CY2020	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	0	shares
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$BSY
Bentley Systems Inc Stock $bsy

2021 Q4 Form 10-K Financial Statement

#000162828022004474 Filed on March 01, 2022

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$BSY Bentley Systems Inc Stock $bsy

2021 Q4 Form 10-K Financial Statement

#000162828022004474 Filed on March 01, 2022

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$BSY
Bentley Systems Inc Stock $bsy