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Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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As of the balance sheet date, the aggregate unrecognized cost of equity-based awards made to employees under equity-based compensation awards that have yet to vest.

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The weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, using a decimal to express in number of years.

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The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

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The weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect during the reporting period as a result of the occurrence of a terminating event specified in the contractual agreement of the plan.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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The weighted average fair value of nonvested awards on equity-based plans excluding option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units.

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The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

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The period of time an equity-based award is expected to be outstanding. An equity-based award's expected term is generally determined based on, among other factors, the instrument's contractual term and the effects of employees' expected exercise and post-vesting employment termination behavior.

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The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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The maximum risk-free interest rate assumption that is used in valuing an option on its own shares.

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The minimum risk-free interest rate assumption that is used in valuing an option on its own shares.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

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The total dollar difference between fair values of the underlying shares reserved for issuance and exercise prices of vested portions of options outstanding and currently exercisable under the option plan as of the balance sheet date.

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The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

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The weighted average period between the balance sheet date and expiration for all vested portions of options outstanding and currently exercisable (or convertible) under the plan, which may be expressed in a decimal value for number of years.

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The total accumulated difference between fair values of underlying shares on dates of exercise and exercise price on options which were exercised (or share units converted) into shares during the reporting period under the plan.

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The weighted average price at which option holders acquired shares when converting their stock options into shares under the plan during the reporting period.

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The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan.

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The weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated during the reporting period due to noncompliance with plan terms during the reporting period.

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Net number of share options (or share units) granted during the period.

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The weighted average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on stock options awarded under the plan during the reporting period.

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The total dollar difference between fair values of the underlying shares reserved for issuance and exercise prices pertaining to options outstanding under the plan as of the balance sheet date.

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The number of shares reserved for issuance under stock option agreements awarded under the plan that validly exist and are outstanding as of the balance sheet date, including vested options.

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The weighted average price as of the beginning of the year at which grantees can acquire the shares reserved for issuance under the stock option plan.

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The weighted average period between the balance sheet date and expiration for all awards outstanding under the plan, which may be expressed in a decimal value for number of years.

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As of the balance sheet date, the total dollar difference between fair values of the underlying shares reserved for issuance and exercise prices of fully vested and expected to vest options that are exercisable.

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The number of exercisable share options (fully vested and expected to vest) that may be converted as of the balance sheet date.

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As of the balance sheet date, the weighted-average exercise price (at which grantees can acquire the shares reserved for issuance) for exercisable stock options that are fully vested or expected to vest.

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Period Type:	instant

- Definition

The weighted-average period between the balance sheet date and expiration date for fully vested and expected to vest options that are exercisable (or convertible) under the plan, which may be expressed in a decimal value for number of years.

+ References

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageRemainingContractualTerm
Namespace Prefix:	us-gaap
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of share options (or share units) exercised during the current period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.28,29)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 04
-Article 3

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iv)(2)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 29, 30
-Article 5

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=6959260&loc=d3e187085-122770

+ Details

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Namespace Prefix:	us-gaap
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

Stock-Based Compensation (Details) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended		1 Months Ended	6 Months Ended	1 Months Ended	6 Months Ended	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011 Stock options	Jun. 30, 2010 Stock options	Jun. 30, 2011 Stock options	Jun. 30, 2010 Stock options	May 31, 2010 Stock options, Bruker Corporation Stock Plan	Jun. 30, 2011 Stock options, Bruker Corporation Stock Plan	Oct. 31, 2009 Stock options, Bruker Energy and Supercon Technologies Stock Plan	Jun. 30, 2011 Stock options, Bruker Energy and Supercon Technologies Stock Plan	Jun. 30, 2011 Restricted stock	Jun. 30, 2010 Restricted stock	Jun. 30, 2011 Restricted stock	Jun. 30, 2010 Restricted stock
Stock-Based Compensation
Total stock-based compensation pre-tax	$ 2.0	$ 1.7	$ 3.8	$ 3.3	$ 1.6	$ 1.5	$ 3.2	$ 2.8					$ 0.4	$ 0.2	$ 0.6	$ 0.5
Tax benefit	0.2	0.2	0.5	0.5
Total stock-based compensation net of tax	1.8	1.5	3.3	2.8
Award vesting period, minimum (in years)							3Y		3Y		3Y
Award vesting period, maximum (in years)							5Y		5Y		5Y
Risk-free interest rate, minimum (as a percent)							2.13%	1.73%
Risk-free interest rate, maximum (as a percent)							3.12%	3.46%
Expected life (in years)							6.5	6.5
Volatility (as a percent)							57.20%	62.00%
Expected dividend yield (as a percent)							0.00%	0.00%
Number of common stock issued (in shares)									8,000,000		1,600,000
Stock option, Number of shares
Outstanding at the beginning of the period (in shares)							4,718,648
Granted (in shares)							162,500
Exercised (in shares)							(306,585)
Forfeited (in shares)							(95,755)
Outstanding at the end of the period (in shares)					4,478,808		4,478,808					800,000
Exercisable at the end of the period (in shares)					2,498,976		2,498,976
Exercisable and expected to vest at the end of the period (in shares)					4,375,857		4,375,857
Stock options, Weighted average exercise price
Outstanding at the beginning of the period (in dollars per share)							$ 9.99
Granted (in dollars per share)					$ 18.45		$ 18.45
Exercised (in dollars per share)					$ 9.56		$ 9.56
Forfeited (in dollars per share)					$ 10.87		$ 10.87
Outstanding at the end of the period (in dollars per share)					$ 10.31		$ 10.31
Exercisable at the end of the period (in dollars per share)					$ 8.87		$ 8.87
Exercisable and expected to vest at the end of the period (in dollars per share)					$ 10.29		$ 10.29
Stock options, Weighted average remaining contractual life (years)
Outstanding at the end of the period (in years)					6.1		6.1
Exercisable at the end of the period (in years)							5.0
Exercisable and expected to vest at the end of the period (in years)							6.1
Stock options, Aggregate intrinsic value
Exercised (in dollars)							2.9
Outstanding at the end of the period (in dollars)					44.9		44.9
Exercisable at the end of the period (in dollars)					28.7		28.7
Exercisable and expected to vest at the end of the period (in dollars)					44.1		44.1
Fair value of the Company's common stock price					$ 20.36		$ 20.36
Restricted stock, Number of shares
Outstanding at the beginning of the period (in shares)															247,258
Granted (in shares)															156,822
Vested (in shares)															(46,420)
Forfeited (in shares)															(300)
Outstanding at the end of the period (in shares)													357,360		357,360
Restricted stock, Weighted-average grant date fair value
Non-vested at the beginning of the period (in dollars per share)															$ 8.02
Granted (in dollars per shares)															$ 21.28
Vested (in dollars per share)															$ 7.69
Forfeited (in dollars per share)													$ 7.55		$ 7.55
Non-vested at the end of the period (in dollars per share)													$ 13.88		$ 13.88
Expected pre-tax stock-based compensation expense										$ 12.3		$ 1.5	$ 4.1		$ 4.1
Weighted average remaining service period (in years)										2.0		2.8			3.6