XML 100 R78.htm IDEA: XBRL DOCUMENT v3.20.2

Long-Term Debt - Bank Credit Facility (Details) - USD ($)		9 Months Ended		12 Months Ended
	Dec. 19, 2017	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019	Dec. 31, 2018	Dec. 17, 2017
Debt Instrument [Line Items]
Total carrying value of debt		$ 589,583,000		$ 233,750,000	$ 258,750,000
Interest expense		4,821,000	$ 7,477,000	9,731,000	9,607,000
Amortization of deferred debt issuance costs		430,000	415,000	553,000	552,000
Other interest expense		40,000	157,000	$ 207,000	$ 255,000
Credit Facility
Debt Instrument [Line Items]
Weighted average interest rate				3.47%	3.28%
Accrued interest and fees				$ 0	$ 31,000
Line of Credit | Credit Facility
Debt Instrument [Line Items]
Line of Credit Facility, Remaining Borrowing Capacity		34,850,000		$ 265,704,000	240,619,000
Revolving Credit Facility | Credit Facility
Debt Instrument [Line Items]
Percentage of stock owned from foreign subsidiaries				65.00%
Interest expense				$ 8,971,000	8,800,000
Revolving Credit Facility | Term Loan
Debt Instrument [Line Items]
Amortization of deferred debt issuance costs		$ 430,000	$ 415,000	553,000	552,000
Revolving Credit Facility | Line of Credit
Debt Instrument [Line Items]
Accordion feature, increase limit	$ 100,000,000
Total carrying value of debt				233,750,000	258,750,000
Revolving Credit Facility | Line of Credit | Credit Facility
Debt Instrument [Line Items]
Maximum borrowing capacity	500,000,000					$ 500,000,000
Letter of Credit
Debt Instrument [Line Items]
Accordion feature, increase limit	100,000,000
Letter of Credit | Line of Credit | Credit Facility
Debt Instrument [Line Items]
Maximum borrowing capacity	50,000,000
Other incremental borrowings	50,000,000
Bridge Loan
Debt Instrument [Line Items]
Multi-currency swing-line sub-facility borrowings	50,000,000
Bridge Loan | Line of Credit | Credit Facility
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 50,000,000
Letters of Credit And Surety Bonds | Credit Facility
Debt Instrument [Line Items]
Total carrying value of debt				$ 546,000	$ 631,000
Revolving Credit Facility - Euro Currency | London Interbank Offered Rate (LIBOR) | Maximum | Credit Facility
Debt Instrument [Line Items]
Spread variable rate	2.25%			225.00%
Revolving Credit Facility - Euro Currency | London Interbank Offered Rate (LIBOR) | Minimum | Credit Facility
Debt Instrument [Line Items]
Spread variable rate	1.00%			100.00%
Revolving Credit Facility - Non-Euro Currency | Maximum | Credit Facility
Debt Instrument [Line Items]
Commitment fee for the unused credit facility (in percentage)	0.30%			30.00%
Revolving Credit Facility - Non-Euro Currency | Minimum | Credit Facility
Debt Instrument [Line Items]
Commitment fee for the unused credit facility (in percentage)	0.15%			15.00%
Revolving Credit Facility - Non-Euro Currency | London Interbank Offered Rate (LIBOR) | Credit Facility
Debt Instrument [Line Items]
Spread variable rate	1.00%			100.00%
Revolving Credit Facility - Non-Euro Currency | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Credit Facility
Debt Instrument [Line Items]
Spread variable rate				50.00%
Revolving Credit Facility - Non-Euro Currency | Base Rate | Maximum | Credit Facility
Debt Instrument [Line Items]
Spread variable rate	1.25%			125.00%
Revolving Credit Facility - Non-Euro Currency | Base Rate | Minimum | Credit Facility
Debt Instrument [Line Items]
Spread variable rate	0.00%			0.00%

X

- Definition

The carrying value of accrued interest and fees amount.

+ References

No definition available.

+ Details

Name:	bsy_AccruedInterestAndFees
Namespace Prefix:	bsy_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Line of Credit Facility, Accordion Feature, Increase Limit

+ References

No definition available.

+ Details

Name:	bsy_LineOfCreditFacilityAccordionFeatureIncreaseLimit
Namespace Prefix:	bsy_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

The amount of line of credit facility, multi-currency swing-line sub-facility borrowings.

+ References

No definition available.

+ Details

Name:	bsy_LineOfCreditFacilityMultiCurrencySwingLineSubFacilityBorrowings
Namespace Prefix:	bsy_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

The amount of line of credit facility, other incremental borrowings.

+ References

No definition available.

+ Details

Name:	bsy_LineOfCreditFacilityOtherIncrementalBorrowings
Namespace Prefix:	bsy_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Amount of amortization expense attributable to debt issuance costs.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(8))
-URI http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=119993939&loc=d3e28555-108399

+ Details

Name:	us-gaap_AmortizationOfFinancingCosts
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix:	us-gaap_
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

Weighted average interest rate of debt outstanding.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtWeightedAverageInterestRate
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Amount of the cost of borrowed funds accounted for as interest expense.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6450988&loc=d3e26243-108391

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=119993939&loc=d3e28555-108399

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 22
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8736-108599

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (210.5-03(11))
-URI http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227

Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 220
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04.9)
-URI http://asc.fasb.org/extlink&oid=120399700&loc=SL114874048-224260

+ Details

Name:	us-gaap_InterestExpense
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Amount of interest expense classified as other.

+ References

No definition available.

+ Details

Name:	us-gaap_InterestExpenseOther
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19(b),22(b))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

Name:	us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19(b),22(b))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

Name:	us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

+ References

No definition available.

+ Details

Name:	us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount after unamortized (discount) premium and debt issuance costs of long-term debt classified as noncurrent and excluding amounts to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22)
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

Name:	us-gaap_LongTermDebtNoncurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Percentage of subsidiary's or equity investee's stock owned by parent company after stock transaction.

+ References

No definition available.

+ Details

Name:	us-gaap_SaleOfStockPercentageOfOwnershipAfterTransaction
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_DebtInstrumentAxis=bsy_CreditFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_LineOfCreditMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_CreditFacilityAxis=us-gaap_RevolvingCreditFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DebtInstrumentAxis=bsy_TermLoanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_CreditFacilityAxis=us-gaap_LetterOfCreditMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_CreditFacilityAxis=us-gaap_BridgeLoanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_CreditFacilityAxis=bsy_LettersOfCreditAndSuretyBondsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_CreditFacilityAxis=bsy_RevolvingCreditFacilityEuroCurrencyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_VariableRateAxis=us-gaap_LondonInterbankOfferedRateLIBORMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_CreditFacilityAxis=bsy_RevolvingCreditFacilityNonEuroCurrencyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_VariableRateAxis=us-gaap_SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_VariableRateAxis=us-gaap_BaseRateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: