Aggregate notional amount of derivatives to purchase the underlying asset.

No definition available.

Name:	brkr_NotionalAmountOfDerivativePurchaseContracts
Namespace Prefix:	brkr_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Aggregate notional amount of derivatives to deliver the underlying asset.

+ References

No definition available.

+ Details

Name:	brkr_NotionalAmountOfDerivativeSaleContracts
Namespace Prefix:	brkr_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 12
-Section 13
-Sentence Column B

+ Details

Name:	invest_DerivativeNotionalAmount
Namespace Prefix:	invest_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	instant

- Definition

Fair value of financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, not subject to a master netting arrangement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 20
-Section 55
-Paragraph 22
-URI http://asc.fasb.org/extlink&oid=82849420&loc=SL20226052-175313

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312

+ Details

Name:	us-gaap_DerivativeAssetNotSubjectToMasterNettingArrangement
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Fair value of financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, not subject to a master netting arrangement.

+ References

+ Details

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

- 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_DerivativeLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=us-gaap_EmbeddedDerivativeFinancialInstrumentsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=us-gaap_CommodityContractMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_HedgingDesignationAxis=us-gaap_NotDesignatedAsHedgingInstrumentEconomicHedgeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=us-gaap_ForeignExchangeContractMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=brkr_BuyEuroSellUnitedStatesDollarsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=brkr_BuyUnitedStatesDollarsSellEuroMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=brkr_BuySwissFrancsSellUnitedStatesDollarsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=brkr_BuySwissFrancsSellJapaneseYenMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=brkr_BuyUnitedStatesDollarsSellJapaneseYenMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=brkr_BuyJapaneseYenSellUnitedStatesDollarsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=brkr_BuyEuroSellPolishZlotyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=brkr_BuyPolishZlotySellEuroMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=brkr_BuySingaporeDollarsSellUnitedStatesDollarsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Derivative Instruments and Hedging Activities - Risk Management (Details) € in Millions, ¥ in Millions, zł in Millions, SFr in Millions, $ in Millions, $ in Millions	Mar. 31, 2018 PLN (zł)	Mar. 31, 2018 JPY (¥)	Mar. 31, 2018 CHF (SFr)	Mar. 31, 2018 SGD ($)	Mar. 31, 2018 EUR (€)	Mar. 31, 2018 USD ($)	Dec. 31, 2017 CHF (SFr)	Dec. 31, 2017 SGD ($)	Dec. 31, 2017 EUR (€)	Dec. 31, 2017 USD ($)
Embedded derivatives in purchase and delivery contracts
Derivative instruments and hedging activities
Notional amount of derivative sale contracts						$ 92.3				$ 98.3
Notional amount of derivative purchase contracts						3.7				3.6
Fixed price commodity contracts
Derivative instruments and hedging activities
Notional Amount						4.0				3.0
Not designated as hedging instruments \| Foreign exchange contracts
Derivative instruments and hedging activities
Notional Amount						107.3				84.2
Fair Value of Assets						0.1				4.5
Fair Value of Liabilities						0.1				0.1
Not designated as hedging instruments \| USD:EUR
Derivative instruments and hedging activities
Notional Amount					€ 55.4	68.9			€ 59.5	67.0
Fair Value of Assets						0.1				4.5
Not designated as hedging instruments \| EUR:USD
Derivative instruments and hedging activities
Notional Amount						14.7
Not designated as hedging instruments \| USD:CHF
Derivative instruments and hedging activities
Notional Amount			SFr 8.3			8.7	SFr 11.0			11.3
Not designated as hedging instruments \| YEN:CHF
Derivative instruments and hedging activities
Notional Amount			SFr 1.8			1.9
Fair Value of Liabilities						0.1
Not designated as hedging instruments \| YEN:USD
Derivative instruments and hedging activities
Notional Amount						3.7
Not designated as hedging instruments \| USD:YEN
Derivative instruments and hedging activities
Notional Amount		¥ 391.0				3.7
Not designated as hedging instruments \| PLN:EUR
Derivative instruments and hedging activities
Notional Amount					€ 2.3	2.8			€ 1.8	2.3
Fair Value of Liabilities										0.1
Not designated as hedging instruments \| EUR:PLN
Derivative instruments and hedging activities
Notional Amount	zł 2.6					0.8
Not designated as hedging instruments \| USD:SGD
Derivative instruments and hedging activities
Notional Amount				$ 2.8		$ 2.1		$ 4.9		$ 3.6