Shareholders' Equity - Comprehensive Income (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Summary of comprehensive income
Consolidated net income	$ 47.0	$ 12.9	$ 85.4	$ 42.9
Foreign currency translation adjustments	12.7	(10.2)	27.7	(47.3)
Pension liability adjustments	0.6	2.3	1.2	11.1
Net comprehensive income	60.3	5.0	114.3	6.7
Less: Comprehensive income attributable to noncontrolling interests	0.6	1.2	0.9	2.4
Comprehensive income attributable to Bruker Corporation	$ 59.7	$ 3.8	$ 113.4	$ 4.3