Quarterly Financial Data (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Quarterly Financial Data (Unaudited)
Net revenue	$ 478.2	$ 396.1	$ 396.0	$ 353.5	$ 508.0	$ 419.8	$ 457.4	$ 423.7	$ 1,623.8	$ 1,808.9	$ 1,839.4
Gross profit	211.5	167.5	169.4	160.2	215.8	167.3	200.5	179.7	708.6	763.3	805.2
Operating income	70.7	28.2	31.6	15.2	44.5	4.9	35.4	20.6	145.7	105.4	148.2
Net income attributable to Bruker Corporation	$ 61.4	$ 11.8	$ 21.9	$ 6.5	$ 26.1	$ 5.5	$ 16.4	$ 8.7	$ 101.6	$ 56.7	$ 80.1
Net income per common share attributable to Bruker Corporation shareholders:
Basic (in dollars per share)	$ 0.37	$ 0.07	$ 0.13	$ 0.04	$ 0.16	$ 0.03	$ 0.10	$ 0.05	$ 0.60	$ 0.34	$ 0.48
Diluted (in dollars per share)	$ 0.36	$ 0.07	$ 0.13	$ 0.04	$ 0.15	$ 0.03	$ 0.10	$ 0.05	$ 0.60	$ 0.33	$ 0.48
Impairment of assets	$ 0.3	$ 2.5	$ 1.8		$ 4.6	$ 6.9			$ 4.6	$ 11.5