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CONSOLIDATED STATEMENTS OF EARNINGS PARENTHETICAL	Feb. 28, 2014 shares
Income Statement [Abstract]
Stock issued during period (in shares)	0.5

X

- Definition

Stock Issued During Period, Number of Shares for Every Share of Former Parent's Common Stock Held

+ References

No definition available.

+ Details

Name:	kn_StockIssuedDuringPeriodNumberofSharesforEveryShareofFormerParentsCommonStockHeld
Namespace Prefix:	kn_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

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- References

No definition available.

+ Details

Name:	us-gaap_IncomeStatementAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration