Acquisitions - Schedule of Components and Fair Value Allocation of the Consideration Transferred in Connection with Acquisitions (Details) € in Millions, SFr in Millions, $ in Millions										9 Months Ended
		May 06, 2024 USD ($)	Apr. 30, 2024 USD ($)	Mar. 06, 2024 USD ($)	Mar. 06, 2024 CHF (SFr)	Feb. 01, 2024 USD ($)	Jan. 02, 2024 USD ($)	May 04, 2023 USD ($)	May 04, 2023 EUR (€)	Sep. 30, 2024 USD ($)	Sep. 30, 2023 USD ($)	Dec. 31, 2023 USD ($)
Consideration Transferred:
Cash paid										$ 1,627.0
Cash acquired										(52.1)
Fair value of contingent consideration										13.4
Working capital adjustment and other closing adjustments										25.2
Total consideration transferred, net of cash acquired										115.4	$ 43.8
Allocation of Consideration Transferred:
Accounts receivable										57.3
Inventories										161.2
Other current assets										27.1
Property, plant and equipment										69.9
Other assets										82.3
Goodwill										1,474.6		$ 582.6
Deferred taxes (net)										(117.0)
Liabilities assumed										(292.0)
Total consideration allocated										1,613.5
Operating segments
Consideration Transferred:
Total consideration transferred, net of cash acquired										1,613.5
Allocation of Consideration Transferred:
Goodwill										874.0
Technology
Allocation of Consideration Transferred:
Intangible assets										332.1
Customer Relationships
Allocation of Consideration Transferred:
Intangible assets										364.5
Backlog
Allocation of Consideration Transferred:
Intangible assets										14.8
Trade Name
Allocation of Consideration Transferred:
Intangible assets										39.3
Biognyosys, AG | Bruker CALID
Consideration Transferred:
Cash paid										73.6
Cash acquired										(9.5)
Holdback										0.2
Fair value of contingent consideration										0.0
Fair value of hybrid financial instruments - founders										0.0
Fair value of redeemable noncontrolling interest - other shareholders										2.5
Total consideration transferred, net of cash acquired										66.8
Allocation of Consideration Transferred:
Accounts receivable										3.6
Inventories										0.4
Other current assets										0.9
Property, plant and equipment										8.0
Other assets										4.3
Goodwill										47.5
Liabilities assumed										(25.4)
Total consideration allocated										66.8
Biognyosys, AG | Bruker CALID | Technology
Allocation of Consideration Transferred:
Intangible assets										10.2
Biognyosys, AG | Bruker CALID | Customer Relationships
Allocation of Consideration Transferred:
Intangible assets										13.8
Biognyosys, AG | Bruker CALID | Backlog
Allocation of Consideration Transferred:
Intangible assets										0.8
Biognyosys, AG | Bruker CALID | Trade Name
Allocation of Consideration Transferred:
Intangible assets										2.7
Zontal Inc
Consideration Transferred:
Total consideration transferred, net of cash acquired								$ 14.8	€ 13.4
Zontal Inc | Bruker CALID
Consideration Transferred:
Cash paid										14.8
Cash acquired										(0.3)
Holdback										0.0
Fair value of contingent consideration										0.5
Fair value of hybrid financial instruments - founders										18.5
Fair value of redeemable noncontrolling interest - other shareholders										0.0
Total consideration transferred, net of cash acquired										33.5
Allocation of Consideration Transferred:
Accounts receivable										0.7
Inventories										0.0
Other current assets										0.3
Property, plant and equipment										0.0
Other assets										2.5
Goodwill										25.9
Liabilities assumed	[1]									(7.0)
Total consideration allocated										33.5
Zontal Inc | Bruker CALID | Technology
Allocation of Consideration Transferred:
Intangible assets										5.8
Zontal Inc | Bruker CALID | Customer Relationships
Allocation of Consideration Transferred:
Intangible assets										4.0
Zontal Inc | Bruker CALID | Backlog
Allocation of Consideration Transferred:
Intangible assets										0.2
Zontal Inc | Bruker CALID | Trade Name
Allocation of Consideration Transferred:
Intangible assets										1.1
Chemspeed Technologies AG
Consideration Transferred:
Total consideration transferred, net of cash acquired				$ 175.4	SFr 154.7
Chemspeed Technologies AG | BSI BBIO
Consideration Transferred:
Cash paid										175.4
Cash acquired										(0.6)
Fair value of contingent consideration										0.0
Working capital adjustment and other closing adjustments										0.0
Total consideration transferred, net of cash acquired										174.8
Allocation of Consideration Transferred:
Accounts receivable										7.0
Inventories										48.7
Other current assets										1.4
Property, plant and equipment										1.8
Other assets										17.3
Goodwill										123.5
Deferred taxes (net)										(14.7)
Liabilities assumed										(103.8)
Total consideration allocated										174.8
Chemspeed Technologies AG | BSI BBIO | Technology
Allocation of Consideration Transferred:
Intangible assets										27.9
Chemspeed Technologies AG | BSI BBIO | Customer Relationships
Allocation of Consideration Transferred:
Intangible assets										51.5
Chemspeed Technologies AG | BSI BBIO | Backlog
Allocation of Consideration Transferred:
Intangible assets										9.4
Chemspeed Technologies AG | BSI BBIO | Trade Name
Allocation of Consideration Transferred:
Intangible assets										4.8
Spectral Instruments Imaging LLC
Consideration Transferred:
Total consideration transferred, net of cash acquired						$ 29.0				29.3
Nanostring Technologies Inc
Consideration Transferred:
Total consideration transferred, net of cash acquired		$ 392.6
Nanostring Technologies Inc | BSI NANO
Consideration Transferred:
Cash paid										392.6
Cash acquired										(0.5)
Fair value of contingent consideration										0.0
Working capital adjustment and other closing adjustments										0.0
Total consideration transferred, net of cash acquired										392.1
Allocation of Consideration Transferred:
Accounts receivable										16.8
Inventories										51.5
Other current assets										8.9
Property, plant and equipment										31.0
Other assets										20.3
Goodwill										181.8
Deferred taxes (net)										0.0
Liabilities assumed										(85.2)
Total consideration allocated										392.1
Nanostring Technologies Inc | BSI NANO | Technology
Allocation of Consideration Transferred:
Intangible assets										76.0
Nanostring Technologies Inc | BSI NANO | Customer Relationships
Allocation of Consideration Transferred:
Intangible assets										71.0
Nanostring Technologies Inc | BSI NANO | Backlog
Allocation of Consideration Transferred:
Intangible assets										0.0
Nanostring Technologies Inc | BSI NANO | Trade Name
Allocation of Consideration Transferred:
Intangible assets										20.0
ELITechGroup
Consideration Transferred:
Total consideration transferred, net of cash acquired			$ 931.2
ELITechGroup | BSI CALID
Consideration Transferred:
Cash paid										951.9
Cash acquired										(43.4)
Fair value of contingent consideration										0.0
Working capital adjustment and other closing adjustments										22.7
Total consideration transferred, net of cash acquired										931.2
Allocation of Consideration Transferred:
Accounts receivable										30.6
Inventories										31.6
Other current assets										15.7
Property, plant and equipment										36.2
Other assets										41.3
Goodwill										500.1
Deferred taxes (net)										(99.8)
Liabilities assumed										(66.9)
Total consideration allocated										931.2
ELITechGroup | BSI CALID | Technology
Allocation of Consideration Transferred:
Intangible assets										193.3
ELITechGroup | BSI CALID | Customer Relationships
Allocation of Consideration Transferred:
Intangible assets										236.3
ELITechGroup | BSI CALID | Backlog
Allocation of Consideration Transferred:
Intangible assets										0.5
ELITechGroup | BSI CALID | Trade Name
Allocation of Consideration Transferred:
Intangible assets										12.3
Nion LLC
Consideration Transferred:
Total consideration transferred, net of cash acquired							$ 37.4			42.9
Other | Various
Consideration Transferred:
Cash paid										107.1
Cash acquired										(7.6)
Fair value of contingent consideration										13.4
Working capital adjustment and other closing adjustments										2.5
Total consideration transferred, net of cash acquired										115.4
Allocation of Consideration Transferred:
Accounts receivable										2.9
Inventories										29.4
Other current assets										1.1
Property, plant and equipment										0.9
Other assets										3.4
Goodwill										68.6
Deferred taxes (net)										(2.5)
Liabilities assumed										(36.1)
Total consideration allocated										115.4
Other | Various | Technology
Allocation of Consideration Transferred:
Intangible assets										34.9
Other | Various | Customer Relationships
Allocation of Consideration Transferred:
Intangible assets										5.7
Other | Various | Backlog
Allocation of Consideration Transferred:
Intangible assets										4.9
Other | Various | Trade Name
Allocation of Consideration Transferred:
Intangible assets										$ 2.2

[1] (a) This amount includes assumed liability for employee awards of $6.3 million on the acquisition date and was settled in the period ended March 31, 2023.