Stock-Based Compensation (Details) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended				3 Months Ended		9 Months Ended			9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014 Stock options	Sep. 30, 2013 Stock options	Sep. 30, 2014 Stock options	Sep. 30, 2013 Stock options	Sep. 30, 2014 Stock options Minimum	Sep. 30, 2014 Stock options Maximum	Sep. 30, 2014 Restricted stock	Sep. 30, 2013 Restricted stock	Sep. 30, 2014 Restricted stock	Sep. 30, 2013 Restricted stock	May 31, 2010 Bruker Corporation Stock Plan	Sep. 30, 2014 Bruker Corporation Stock Plan Minimum	Sep. 30, 2014 Bruker Corporation Stock Plan Maximum	Sep. 30, 2014 Bruker Corporation Stock Plan Stock options	Sep. 30, 2014 Bruker Corporation Stock Plan Restricted stock
Stock-Based Compensation
Total stock-based compensation	$ 2.1	$ 1.6	$ 7.1	$ 4.8	$ 1.7	$ 1.3	$ 4.7	$ 3.9			$ 0.4	$ 0.3	$ 2.4	$ 0.9
Vesting period									3 years	5 years						3 years	5 years
Risk-free interest rate, minimum (as a percent)							1.81%	1.07%
Risk-free interest rate, maximum (as a percent)							2.10%	2.45%
Expected life								6 years 6 months	6 years	6 years 3 months
Volatility (as a percent)								54.90%	53.24%	56.24%
Expected dividend yield (as a percent)							0.00%	0.00%
Common stock authorized for issuance (in shares)															8,000,000
Stock option, Number of Shares
Outstanding at the beginning of the period (in shares)																		4,877,564
Granted (in shares)																		990,670
Exercised (in shares)																		(807,275)
Forfeited (in shares)																		(181,220)
Outstanding at the end of the period (in shares)																		4,879,739
Exercisable at the end of the period (in shares)																		2,496,016
Exercisable and expected to vest at the end of the period (in shares)																		4,758,169
Stock options, Weighted Average Option Price
Outstanding at the beginning of the period (in dollars per share)																		$ 13.12
Granted (in dollars per share)																		$ 20.70
Exercised (in dollars per share)																		$ 9.47
Forfeited (in dollars per share)																		$ 19.29
Outstanding at the end of the period (in dollars per share)																		$ 15.20
Exercisable at the end of the period (in dollars per share)																		$ 12.23
Exercisable and expected to vest at the end of the period (in dollars per share)																		$ 15.12
Stock options, Weighted Average Remaining Contractual Term
Outstanding at the end of the period																		6 years 8 months 12 days
Exercisable at the end of the period																		4 years 10 months 24 days
Exercisable and expected to vest at the end of the period																		6 years 7 months 6 days
Stock options, Aggregate Intrinsic Value
Outstanding at the end of the period (in dollars)																		19.5
Exercisable at the end of the period (in dollars)																		16.0
Exercisable and expected to vest at the end of the period (in dollars)																		19.3
Fair value of the Company's common stock price (in dollars per share)																		$ 18.52
Restricted stock, Number of Shares
Outstanding at the beginning of the period (in shares)																			357,948
Granted (in shares)																			112,129
Vested (in shares)																			(160,352)
Outstanding at the end of the period (in shares)																			309,725
Restricted stock, Weighted Average Grant Date Fair Value
Outstanding at the beginning of the period (in dollars per share)																			$ 16.65
Granted (in dollars per share)																			$ 20.68
Vested (in dollars per share)																			$ 18.41
Outstanding at the end of the period (in dollars per share)																			$ 17.20
Expected pre-tax stock-based compensation expense																		$ 20.8	$ 5.0
Weighted average remaining service period																		2 years 6 months	3 years 2 months 12 days