Other Comprehensive Income (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Other Comprehensive Income
Consolidated net income	$ 39.9	$ 20.1	$ 64.9	$ 54.4
Foreign currency translation adjustments	11.9	(52.0)	(4.0)	9.2
Unrealized losses on interest rate swap:
Unrealized holding losses arising during the period			(0.2)	(0.3)
Less reclassification adjustments for settlements included in the determination of net income	0.2	0.6	1.1	1.6
Pension liability adjustments	(0.2)	1.6	0.1	(0.6)
Net comprehensive income (loss)	51.8	(29.7)	61.9	64.3
Less: Comprehensive income (loss) attributable to noncontrolling interests	0.1		0.2	0.1
Comprehensive income (loss) attributable to Bruker Corporation	$ 51.7	$ (29.7)	$ 61.7	$ 64.2