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v2.4.1.9

Debt (Details) (USD $) In Millions, unless otherwise specified | Nov. 29, 2014 | Jul. 28, 2014 | May 31, 2014
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Line of Credit Facility |  |  |
Current maturities of long-term debt | $ 50.0 us-gaap_LongTermDebtCurrent |  | $ 50.0 us-gaap_LongTermDebtCurrent
Long-term Line of Credit |  | 127.0 us-gaap_LineOfCredit |
Borrowings on revolver and outstanding letters of credit | 87.6 mlhr_Borrowingsonrevolverandoutstandinglettersofcredit |  |
Letters of Credit Outstanding, Amount |  |  | 4.9 us-gaap_LettersOfCreditOutstandingAmount
Revolving Line of Credit, Domestic |  |  |
Line of Credit Facility |  |  |
Line of Credit Facility, Maximum Borrowing Capacity | 250 us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity / us-gaap_DebtInstrumentAxis = mlhr_RevolvingLineOfCreditDomesticMember |  | 150 us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity / us-gaap_DebtInstrumentAxis = mlhr_RevolvingLineOfCreditDomesticMember
Line Of Credit Facility, Increase in Borrowing Capacity | 125 mlhr_LineOfCreditFacilityIncreaseInBorrowingCapacity / us-gaap_DebtInstrumentAxis = mlhr_RevolvingLineOfCreditDomesticMember |  | 75 mlhr_LineOfCreditFacilityIncreaseInBorrowingCapacity / us-gaap_DebtInstrumentAxis = mlhr_RevolvingLineOfCreditDomesticMember
Long-term Line of Credit | 77.0 us-gaap_LineOfCredit / us-gaap_DebtInstrumentAxis = mlhr_RevolvingLineOfCreditDomesticMember |  |
Letters of Credit Outstanding, Amount | 10.6 us-gaap_LettersOfCreditOutstandingAmount / us-gaap_DebtInstrumentAxis = mlhr_RevolvingLineOfCreditDomesticMember |  |
South China Ops [Member] | Revolving Line of Credit, Foreign |  |  |
Line of Credit Facility |  |  |
Long-term Line of Credit | 0 us-gaap_LineOfCredit / us-gaap_DebtInstrumentAxis = mlhr_RevolvingLineOfCreditForeignMember / us-gaap_StatementGeographicalAxis = mlhr_SouthChinaOpsMember |  | 0 us-gaap_LineOfCredit / us-gaap_DebtInstrumentAxis = mlhr_RevolvingLineOfCreditForeignMember / us-gaap_StatementGeographicalAxis = mlhr_SouthChinaOpsMember
Ningbo [Member] | Revolving Line of Credit, Foreign |  |  |
Line of Credit Facility |  |  |
Long-term Line of Credit | 0 us-gaap_LineOfCredit / us-gaap_DebtInstrumentAxis = mlhr_RevolvingLineOfCreditForeignMember / us-gaap_StatementGeographicalAxis = mlhr_NingboMember |  | 0 us-gaap_LineOfCredit / us-gaap_DebtInstrumentAxis = mlhr_RevolvingLineOfCreditForeignMember / us-gaap_StatementGeographicalAxis = mlhr_NingboMember
Line of Credit Facility, Current Borrowing Capacity | $ 5.0 us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity / us-gaap_DebtInstrumentAxis = mlhr_RevolvingLineOfCreditForeignMember / us-gaap_StatementGeographicalAxis = mlhr_NingboMember |  |

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- Definition Borrowings on revolver and outstanding letters of credit + References No definition available. + Details
Name: | mlhr_Borrowingsonrevolverandoutstandinglettersofcredit
Namespace Prefix: | mlhr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Line Of Credit Facility, Increase in Borrowing Capacity + References No definition available. + Details
Name: | mlhr_LineOfCreditFacilityIncreaseInBorrowingCapacity
Namespace Prefix: | mlhr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition The total amount of the contingent obligation under letters of credit outstanding as of the reporting date. + References No definition available. + Details
Name: | us-gaap_LettersOfCreditOutstandingAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.16) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 20, 22 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.16) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
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Balance Type: | credit
Period Type: | instant

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- Definition Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility. + 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 210.5-02.19(b),22(b)) -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 19, 22 -Article 5 + Details
Name: | us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity
Namespace Prefix: | us-gaap_
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Balance Type: | credit
Period Type: | instant

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- Details
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Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + 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 210.5-02.19(b),22(b)) -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 19, 22 -Article 5 + Details
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Namespace Prefix: | us-gaap_
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Balance Type: | credit
Period Type: | instant

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- Definition Amount of long-term debt, after unamortized discount or premium, scheduled to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. + 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 210.5-02.19,20) -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 20 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19 -Article 5 + Details
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Namespace Prefix: | us-gaap_
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Balance Type: | credit
Period Type: | instant

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_StatementGeographicalAxis=mlhr_NingboMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_StatementGeographicalAxis=mlhr_SouthChinaOpsMember
Namespace Prefix: |
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Balance Type: |
Period Type: |