Earnings Per Share - Computation (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Earnings Per Share [Abstract]
Net income attributable to Bruker Corporation	$ 57.1	$ 49.5	$ 133.6	$ 111.1
Weighted average common shares outstanding:
Weighted average common shares outstanding - basic	146.8	149	146.8	149.7
Effect of dilutive securities:
Stock options and restricted stock units	0.9	0.8	0.8	0.9
Weighted average common shares outstanding - diluted	147.7	149.8	147.6	150.6
Net income per common share attributable to Bruker Corporation shareholders:
Basic	$ 0.39	$ 0.33	$ 0.91	$ 0.74
Diluted	$ 0.39	$ 0.33	$ 0.91	$ 0.74