Other Charges, Net (Details 2) - USD ($) $ in Millions	3 Months Ended		9 Months Ended		15 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015
Restructuring charges
Restructuring charges	$ 12.7		$ 21.2
Inventory provisions for inventory write-downs	3.4		5.4
Impairment of assets	2.5	$ 6.9	4.3	$ 6.9
Severance costs	6.2		10.3
Exit related costs	3.1		5.5
Cost of Revenue
Restructuring charges
Restructuring charges	9.7	13.4	15.9	22.3
Other Charges
Restructuring charges
Restructuring charges	3.0	2.8	5.3	7.0
BSI
Restructuring charges
Restructuring charges	12.0	16.2	20.5	29.3
Inventory provisions for inventory write-downs		10.1		12.1
Severance costs		4.1		11.3
Exit related costs		$ 2.0		$ 5.9
BSI | CAM division
Restructuring charges
Restructuring charges					$ 18.8
Inventory provisions for inventory write-downs			0.5		10.3
Severance and exit costs			0.8		8.5
BSI | CAM division | Cost of Revenue
Restructuring charges
Restructuring charges			0.7
BSI | CAM division | Other Charges
Restructuring charges
Restructuring charges			$ 0.6
BSI | Bruker BioSpin - Magnetic Resonance
Restructuring charges
Expected reduction in employee headcount (as a percent)			9.00%
Restructuring charges			$ 10.2
Inventory provisions for inventory write-downs			2.1
Severance and exit costs			8.1
Impairment charge on property, plant and equipment			1.8
BSI | Bruker BioSpin - Magnetic Resonance | Cost of Revenue
Restructuring charges
Restructuring charges			9.0
BSI | Bruker BioSpin - Magnetic Resonance | Other Charges
Restructuring charges
Restructuring charges			1.2
BSI | Bruker BioSpin - Magnetic Resonance | Minimum
Restructuring charges
Expected restructuring and related one-time charges	16.0		16.0		16.0
BSI | Bruker BioSpin - Magnetic Resonance | Minimum | Employee separation and facility exit costs
Restructuring charges
Expected restructuring and related one-time charges	12.0		12.0		12.0
BSI | Bruker BioSpin - Magnetic Resonance | Minimum | Inventory write-downs and asset impairments
Restructuring charges
Expected restructuring and related one-time charges	4.0		4.0		4.0
BSI | Bruker BioSpin - Magnetic Resonance | Maximum
Restructuring charges
Expected restructuring and related one-time charges	20.0		20.0		20.0
BSI | Bruker BioSpin - Magnetic Resonance | Maximum | Employee separation and facility exit costs
Restructuring charges
Expected restructuring and related one-time charges	15.0		15.0		15.0
BSI | Bruker BioSpin - Magnetic Resonance | Maximum | Inventory write-downs and asset impairments
Restructuring charges
Expected restructuring and related one-time charges	5.0		5.0		$ 5.0
BEST
Restructuring charges
Restructuring charges	$ 0.7		$ 0.7