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Equity Incentive Program Equity Incentive Program - Other Information Regarding SSARs and Stock Options (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Document Fiscal Year Focus	2016
SSARs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fair value of SSARs that are exercisable	$ 1.9	$ 0.6	$ 1.1
Aggregate intrinsic value of SSARs exercised	0.1	0.1	0.1
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Cash received by Knowles for exercise of stock options	0.0	0.0	0.1
Aggregate intrinsic value of options exercised	$ 0.0	$ 0.0	$ 0.2

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This is focus fiscal year of the document report in CCYY format. For a 2006 annual report, which may also provide financial information from prior periods, fiscal 2006 should be given as the fiscal year focus. Example: 2006.

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Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Exercised

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Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercised, Aggregate Intrinsic Value

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Aggregate proceeds received by the entity during the annual period from exercises of stock or unit options and conversion of similar instruments granted under equity-based payment arrangements.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
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Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
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