Stock-Based Compensation - Restricted Stock Activity (Details) - Bruker Corporation Stock Plan - Restricted stock - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Restricted stock, Number of Shares
Outstanding at the beginning of the period (in shares)	243,150
Granted (in shares)	13,105
Vested (in shares)	(1,375)
Outstanding at the end of the period (in shares)	254,880
Restricted stock, Weighted Average Grant Date Fair Value
Outstanding at the beginning of the period (in dollars per share)	$ 18.58
Granted (in dollars per share)	24.80
Vested (in dollars per share)	16.57
Outstanding at the end of the period (in dollars per share)	$ 18.91
Total fair value of shares vested	$ 0.0	$ 0.0