Shareholders' Equity - Comprehensive Income (loss) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Summary of comprehensive income
Consolidated net income	$ 21.7	$ 23.6
Foreign currency translation adjustments	15.6	33.6
Pension liability adjustments	0.2	(1.0)
Net comprehensive income	37.5	56.2
Less: Comprehensive income attributable to noncontrolling interests	0.2	0.2
Comprehensive income attributable to Bruker Corporation	$ 37.3	$ 56.0