Shareholders' Equity - Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Summary of comprehensive income (loss)
Consolidated net income	$ 10.6	$ 30.7
Foreign currency translation (net of tax of $5.1 million, $4.4 million and $4.0 million respectively) adjustments	(13.0)	(14.5)
Pension liability adjustments, net of tax	14.5	0.8
Net comprehensive income	12.1	17.0
Less: Comprehensive income (loss) attributable to noncontrolling interests	(0.1)	(0.1)
Less: Comprehensive income (loss) attributable to redeemable noncontrolling interest	(0.5)
Comprehensive income (loss) attributable to Bruker Corporation	$ 12.7	$ 17.1