CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($) $ in Millions	Total Shareholders' Equity Attributable to Bruker Corporation	Common Stock	Treasury Stock	Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Noncontrolling Interests in Consolidated Subsidiaries	Redeemable Noncontrolling Interest	Total
Balance at beginning of period at Dec. 31, 2017	$ 725.4	$ 1.7	$ (401.2)	$ 155.9	$ 942.0	$ 27.0	$ 8.1		$ 733.5
Balance (in shares) at Dec. 31, 2017		155,865,977	16,009,099
Increase (Decrease) in Stockholders' Equity
Restricted shares terminated (in shares)		(6,553)	6,553
Stock options exercised	2.9			2.9					2.9
Stock options exercised (in shares)		180,890
Restricted stock units vested (in shares)		42,762
Stock based compensation	2.5			2.5					2.5
Shares issued for acquisition	(0.1)		$ (0.1)						(0.1)
Shares issued for acquisition (in shares)		(2,123)	2,123
Treasury stock acquired (in shares)		(1,055)	1,055
Adoption impact from new revenue standard	5.9				5.9		0.2		6.1
Cash dividends paid to common stockholders	(6.3)				(6.3)				(6.3)
Consolidated net income (loss)	27.0				27.0		0.4		27.4
Other comprehensive income	24.2					24.2	0.1		24.3
Balance at end of period at Mar. 31, 2018	781.5	$ 1.7	$ (401.3)	161.3	968.6	51.2	8.8		790.3
Balance (in shares) at Mar. 31, 2018		156,079,898	16,018,830
Balance at beginning of period at Dec. 31, 2017	725.4	$ 1.7	$ (401.2)	155.9	942.0	27.0	8.1		733.5
Balance (in shares) at Dec. 31, 2017		155,865,977	16,009,099
Balance at end of period at Jun. 30, 2018	776.6	$ 1.7	$ (401.4)	167.9	993.6	14.8	8.7		785.3
Balance (in shares) at Jun. 30, 2018		156,305,942	16,020,214
Balance at beginning of period at Mar. 31, 2018	781.5	$ 1.7	$ (401.3)	161.3	968.6	51.2	8.8		790.3
Balance (in shares) at Mar. 31, 2018		156,079,898	16,018,830
Increase (Decrease) in Stockholders' Equity
Stock options exercised	4.2			4.2					4.2
Stock options exercised (in shares)		221,464
Restricted stock units vested (in shares)		5,964
Stock based compensation	2.4			2.4					2.4
Treasury stock acquired	(0.1)		$ (0.1)						(0.1)
Treasury stock acquired (in shares)		(1,384)	1,384
Cash dividends paid to common stockholders	(6.2)				(6.2)				(6.2)
Consolidated net income (loss)	31.2				31.2		0.3		31.5
Other comprehensive income	(36.4)					(36.4)	(0.4)		(36.8)
Balance at end of period at Jun. 30, 2018	776.6	$ 1.7	$ (401.4)	167.9	993.6	14.8	8.7		785.3
Balance (in shares) at Jun. 30, 2018		156,305,942	16,020,214
Balance at beginning of period at Dec. 31, 2018	896.6	$ 1.7	$ (401.5)	176.9	1,102.5	17.0	8.5	$ 22.6	905.1
Balance (in shares) at Dec. 31, 2018		156,609,340	16,024,880
Increase (Decrease) in Stockholders' Equity
Stock options exercised	3.1			3.1					3.1
Stock options exercised (in shares)		167,177
Restricted stock units vested (in shares)		35,072
Stock based compensation	2.7			2.7					2.7
Shares issued for acquisition (in shares)		3,087	(3,087)
Cash dividends paid to common stockholders	(6.3)				(6.3)				(6.3)
Consolidated net income (loss)	30.8				30.8		0.1	(0.2)	30.9
Other comprehensive income	(13.7)					(13.7)	(0.2)	(0.4)	(13.9)
Balance at end of period at Mar. 31, 2019	913.2	$ 1.7	$ (401.5)	182.7	1,127.0	3.3	8.4	22.0	921.6
Balance (in shares) at Mar. 31, 2019		156,814,676	16,021,793
Balance at beginning of period at Dec. 31, 2018	896.6	$ 1.7	$ (401.5)	176.9	1,102.5	17.0	8.5	22.6	905.1
Balance (in shares) at Dec. 31, 2018		156,609,340	16,024,880
Balance at end of period at Jun. 30, 2019	860.8	$ 1.7	$ (501.5)	188.0	1,157.2	15.4	9.3	22.0	870.1
Balance (in shares) at Jun. 30, 2019		154,661,991	18,322,428
Balance at beginning of period at Mar. 31, 2019	913.2	$ 1.7	$ (401.5)	182.7	1,127.0	3.3	8.4	22.0	921.6
Balance (in shares) at Mar. 31, 2019		156,814,676	16,021,793
Increase (Decrease) in Stockholders' Equity
Stock options exercised	2.7			2.7					2.7
Stock options exercised (in shares)		145,606
Restricted stock units vested (in shares)		2,344
Stock based compensation	2.6			2.6					2.6
Shares issued for acquisition	(100.0)		$ (100.0)						(100.0)
Shares issued for acquisition (in shares)		(2,300,635)	2,300,635
Cash dividends paid to common stockholders	(6.3)				(6.3)				(6.3)
Consolidated net income (loss)	36.5				36.5		0.8	(0.3)	37.3
Other comprehensive income	12.1					12.1	0.1	0.3	12.2
Balance at end of period at Jun. 30, 2019	$ 860.8	$ 1.7	$ (501.5)	$ 188.0	$ 1,157.2	$ 15.4	$ 9.3	$ 22.0	$ 870.1
Balance (in shares) at Jun. 30, 2019		154,661,991	18,322,428