XML 33 R86.htm IDEA: XBRL DOCUMENT v2.4.1.9

Postretirement and Other Benefits (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Compensation and Retirement Disclosure [Abstract]
Defined Contribution Plan, Cost Recognized	$ 2.0us-gaap_DefinedContributionPlanCostRecognized	$ 1.8us-gaap_DefinedContributionPlanCostRecognized	$ 1.7us-gaap_DefinedContributionPlanCostRecognized
Deferred Compensation Liability, Classified, Noncurrent	13.1us-gaap_DeferredCompensationLiabilityClassifiedNoncurrent	13.4us-gaap_DeferredCompensationLiabilityClassifiedNoncurrent
Deferred Compensation Plan Assets	10.3us-gaap_DeferredCompensationPlanAssets	10.0us-gaap_DeferredCompensationPlanAssets
Other Liabilities, French Law CET Account	$ 8.1swm_OtherLiabilitiesFrenchLawCetAccount	$ 8.9swm_OtherLiabilitiesFrenchLawCetAccount

X

- Definition

Other Liabilities, French Law CET Account

+ References

No definition available.

+ Details

Name:	swm_OtherLiabilitiesFrenchLawCetAccount
Namespace Prefix:	swm_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Details

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

X

- Definition

Aggregate carrying value as of the balance sheet date of the liabilities for all deferred compensation arrangements payable beyond one year (or the operating cycle, if longer).

+ References

No definition available.

+ Details

Name:	us-gaap_DeferredCompensationLiabilityClassifiedNoncurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Carrying amount as of the balance sheet date of assets held under deferred compensation agreements.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.17)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 17

-Article 5

+ Details

Name:	us-gaap_DeferredCompensationPlanAssets
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

The amount of the cost recognized during the period for defined contribution plans.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 70

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6414718&loc=d3e28014-114942

+ Details

Name:	us-gaap_DefinedContributionPlanCostRecognized
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration