XML 71 R61.htm IDEA: XBRL DOCUMENT
v3.19.1

Commitments and Contingencies (Details) - Unfavorable Regulatory Action € in Millions | Mar. 31, 2019 EUR (€) employee | Mar. 31, 2019 USD ($) employee | Dec. 31, 2000 assessment
--- | --- | --- | ---
Raw Materials Assessment |  |  |
Loss Contingencies [Line Items] |  |  |
Number of assessments from the tax authorities regarding ICMS taxes | assessment |  |  | 2
Electricity Assessment |  |  |
Loss Contingencies [Line Items] |  |  |
Number of assessments from the tax authorities regarding ICMS taxes | assessment |  |  | 4
Raw Materials Assessment And Remaining Electricity Assessments |  |  |
Loss Contingencies [Line Items] |  |  |
Liability recorded |  | $ 0 |
Malaucene Co-Employment |  |  |
Loss Contingencies [Line Items] |  |  |
Liability recorded |  | 0 |
Maximum | Raw Materials Assessment 2 |  |  |
Loss Contingencies [Line Items] |  |  |
Loss contingency, range of possible loss |  | 11,100,000 |
Maximum | Electricity Assessment One |  |  |
Loss Contingencies [Line Items] |  |  |
Loss contingency, range of possible loss |  | 4,600,000 |
Maximum | Second Electricity Assessment |  |  |
Loss Contingencies [Line Items] |  |  |
Loss contingency, range of possible loss |  | 8,400,000 |
Maximum | Electricity Assessment Three |  |  |
Loss Contingencies [Line Items] |  |  |
Loss contingency, range of possible loss |  | 700,000 |
Maximum | Electricity Assessment Four |  |  |
Loss Contingencies [Line Items] |  |  |
Loss contingency, range of possible loss |  | $ 9,700,000 |
Maximum | Malaucene Co-Employment |  |  |
Loss Contingencies [Line Items] |  |  |
Loss contingency, range of possible loss | € | € 1.3 |  |
Number of pending claims | employee | 18 | 18 |

X
- Definition The number of assessments from the tax authorities of the State of Rio de Janeiro for unpaid Imposto sobre circulacao de Mercadorias e Servicos (or ICMS) taxes, a form of value-added tax in Brazil. + References No definition available. + Details
Name: | swm_NumberOfAssessmentsFromTaxAuthoritiesRegardingIcmsTaxes
Namespace Prefix: | swm_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition 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. + References No definition available. + Details
Name: | us-gaap_LossContingenciesLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of loss contingency liability. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=82911808&loc=d3e14326-108349 + Details
Name: | us-gaap_LossContingencyAccrualAtCarryingValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Reflects the estimated amount of loss from the specified contingency as of the balance sheet date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=82911808&loc=d3e14435-108349 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 9 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=82911808&loc=d3e14557-108349 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=115931803&loc=d3e12021-110248 + Details
Name: | us-gaap_LossContingencyEstimateOfPossibleLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Number of pending claims pertaining to a loss contingency. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=82911808&loc=d3e14435-108349 + Details
Name: | us-gaap_LossContingencyPendingClaimsNumber
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | srt_LitigationCaseAxis=swm_RawMaterialsAssessmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LossContingenciesByNatureOfContingencyAxis=us-gaap_UnfavorableRegulatoryActionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_LitigationCaseAxis=swm_ElectricityAssessmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_LitigationCaseAxis=swm_RawMaterialsAssessmentAndRemainingElectricityAssessmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_LitigationCaseAxis=swm_MalauceneCoEmploymentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_LitigationCaseAxis=swm_RawMaterialsAssessment2MemberMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_LitigationCaseAxis=swm_ElectricityAssessmentOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_LitigationCaseAxis=swm_ElectricityAssessmentTwoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_LitigationCaseAxis=swm_ElectricityAssessmentThreeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_LitigationCaseAxis=swm_ElectricityAssessmentFourMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |