Other Comprehensive Income (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Other Comprehensive Income
Consolidated net income	$ 9.9	$ 22.6	$ 25.0	$ 34.3
Foreign currency translation adjustments	(34.7)	33.2	(15.9)	61.3
Unrealized losses on interest rate swap:
Unrealized holding losses arising during the period		(0.2)	(0.2)	(0.3)
Less reclassification adjustments for settlements included in the determination of net income	0.4	0.5	0.9	1.0
Pension liability adjustments	0.9	(1.7)	0.3	(2.1)
Comprehensive income (loss) (Note 12)	(23.5)	54.4	10.1	94.2
Less: Comprehensive income (loss) attributable to noncontrolling interests		0.6	0.1	1.1
Comprehensive income attributable to Bruker Corporation	$ (23.5)	$ 53.8	$ 10.0	$ 93.1