Quarterly Financial Data (Unaudited) (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Quarterly Financial Data (Unaudited)
Net revenue	$ 508.0	$ 419.8	$ 457.4	$ 423.7	$ 552.1	$ 439.0	$ 454.9	$ 393.4	$ 1,808.9	$ 1,839.4	$ 1,791.4
Gross profit	215.8	167.3	200.5	179.7	235.9	193.2	201.6	174.5	763.3	805.2	829.4
Operating income	44.5	4.9	35.4	20.6	61.0	31.5	43.5	12.2	105.4	148.2	156.0
Net income attributable to Bruker Corporation	26.1	5.5	16.4	8.7	35.2	16.6	22.9	5.4	56.7	80.1	77.5
Net income per common share attributable to Bruker Corporation shareholders:
Basic (in dollars per share)	$ 0.16	$ 0.03	$ 0.10	$ 0.05	$ 0.21	$ 0.10	$ 0.14	$ 0.03	$ 0.34	$ 0.48	$ 0.47
Diluted (in dollars per share)	$ 0.15	$ 0.03	$ 0.10	$ 0.05	$ 0.21	$ 0.10	$ 0.14	$ 0.03	$ 0.33	$ 0.48	$ 0.46
Impairment of assets	$ 4.6	$ 6.9							$ 11.5		$ 23.8