Represents the number of Stock Incentive Plans.

No definition available.

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- Definition

Represents the annual vesting percentage for share awards or options granted.

+ References

No definition available.

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- Definition

The period of time from the grant date until the time at which the share-based option award expires.

+ References

No definition available.

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- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (b)

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SAB TOPIC 14.F)

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-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 14

-Section F

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- Definition

The amount of expense, net of income tax, 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.

+ References

No definition available.

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- Definition

Unrecognized cost of unvested share-based compensation awards.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (i)

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- Definition

Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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- Definition

Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (a)(1)

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- Definition

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).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(2)(iii)(1)

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- Definition

The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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-Publisher FASB

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-Topic 718

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- Definition

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

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Reference 1: 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)(1)

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- Definition

The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (d)(1)

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- Definition

Fair value of options vested. Excludes equity instruments other than options, for example, but not limited to, share units, stock appreciation rights, restricted stock.

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-Publisher FASB

-Name Accounting Standards Codification

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-Paragraph 2

-Subparagraph (c)

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STOCK PLANS (Details) (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2014 plan	Dec. 31, 2013	Dec. 31, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Stock Incentive Plans	3knl_NumberOfStockIncentivePlans
Stock-based compensation, pre-tax	$ 7.8	$ 10.5	$ 10.4
Stock-based compensation, after-tax	4.8	6.3	6.6
Compensation cost related to nonvested awards not yet recognized	16.3
Weighted average remaining period over which cost to be recognized	1 year 9 months 18 days
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants in period (in shares)			20,000
Total fair value of options vested		0.9	1.0
Compensation cost related to nonvested awards not yet recognized	0.1
Stock options \| Key employees
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants in period (in shares)		20,000
Vesting period		5 years
Award options expiration term		10 years
Weighted-average grant-date fair value of options granted (in dollars per share)		$ 6.26
Restricted stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants in period (in shares)	662,773
Compensation cost related to nonvested awards not yet recognized	$ 16.2
Restricted stock \| One-third per year
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percent of awards or options that vest each year	33.33%
Restricted stock \| One-sixth per year
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percent of awards or options that vest each year	16.67%
Restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants in period (in shares)	0
Time-based and performance-based restricted stock awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average grant-date fair value of options granted (in dollars per share)		$ 16.56	$ 15.48
Time-based and performance-based restricted stock awards \| One-third per year
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants in period (in shares)	1,106,919
Time-based and performance-based restricted stock awards \| Third anniversary
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants in period (in shares)	462,773	441,629	425,030
Weighted-average grant-date fair value of options granted (in dollars per share)	$ 15.43
Time-based and performance-based restricted stock awards \| Vesting On Fourth Anniversary
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants in period (in shares)	200,000
Weighted-average grant-date fair value of options granted (in dollars per share)	$ 18.72
Time-based and performance-based restricted stock awards \| Upon Achieving Goals Over Three Year Period
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants in period (in shares)	331,896
Weighted-average grant-date fair value of options granted (in dollars per share)	$ 17.34
Time-based and performance-based restricted stock awards \| Upon Achieving Stock Price Goals Over Three Period
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants in period (in shares)	112,250
Weighted-average grant-date fair value of options granted (in dollars per share)	$ 8.24
2013 Stock Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for issuance	2,248,456