Earnings Per Share - Computation (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Earnings Per Share [Abstract]
Net income attributable to Bruker Corporation	$ 76.5	$ 61.6
Weighted average common shares outstanding:
Weighted average common shares outstanding - basic	146.8	150.4
Effect of dilutive securities:
Stock options and restricted stock units	0.8	1.0
Weighted average common shares outstanding - diluted	147.6	151.4
Net income per common share attributable to Bruker Corporation shareholders:
Basic	$ 0.52	$ 0.41
Diluted	$ 0.52	$ 0.41