XML 84 R73.htm IDEA: XBRL DOCUMENT
v3.23.2

Subsequent Events (Details) - Subsequent event - USD ($) $ in Millions | Aug. 01, 2023 | Jul. 01, 2023
--- | --- | ---
Engineered Papers Business |  |
Subsequent Event [Line Items] |  |
Total proceeds | $ 620.0 |
Termination fee | $ 24.8 |
Term loan B facility | Term loan facility | Secured Overnight Financing Rate (SOFR) Floor | Credit Facility |  |
Subsequent Event [Line Items] |  |
Basis spread on variable interest rate (percent) |  | 0.75%
Term loan B facility | Term loan facility | Euro Interbank Offered Rate (EURIBOR) Floor | Credit Facility |  |
Subsequent Event [Line Items] |  |
Basis spread on variable interest rate (percent) |  | 0.00%
Term loan B facility | Term loan facility | Euro Interbank Offered Rate (EURIBOR) | Credit Facility |  |
Subsequent Event [Line Items] |  |
Basis spread on variable interest rate (percent) |  | 3.75%
Term loan B facility | Term loan facility | Secured Overnight Financing Rate (SOFR) | Credit Facility |  |
Subsequent Event [Line Items] |  |
Basis spread on variable interest rate (percent) |  | 2.75%

X
- Definition Disposal Group, Including Discontinued Operation, Termination Fee + References No definition available. + Details
Name: | matv_DisposalGroupIncludingDiscontinuedOperationTerminationFee
Namespace Prefix: | matv_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Percentage points added to the reference rate to compute the variable rate on the debt instrument. + References No definition available. + Details
Name: | us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of consideration received or receivable for the disposal of assets and liabilities, including discontinued operation. + References No definition available. + Details
Name: | us-gaap_DisposalGroupIncludingDiscontinuedOperationConsideration
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 830 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481674/830-30-50-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 855 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org//1943274/2147483399/855-10-50-2 + Details
Name: | us-gaap_SubsequentEventLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis=matv_EngineeredPapersBusinessMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=matv_TermLoanFacilityBMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=us-gaap_SecuredDebtMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_VariableRateAxis=matv_SecuredOvernightFinancingRateSOFRFloorMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CreditFacilityAxis=us-gaap_LineOfCreditMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_VariableRateAxis=matv_EuroInterbankOfferedRateEURIBORFloorMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_VariableRateAxis=matv_EuroInterbankOfferedRateEURIBORMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_VariableRateAxis=matv_SecuredOvernightFinancingRateSOFRMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |