Financing Arrangements Additional Information (Details) - USD ($) $ in Thousands	9 Months Ended
Sep. 30, 2017	Dec. 31, 2016
Debt Disclosure [Line Items]
Derivative, Notional Amount	$ 324,000
Fixed Interest Rate	1.30%
Debt Instrument, Interest Coverage Ratio Range, Low	300.00%
Credit facility, amount	$ 2,500,000
Credit facility, outstanding	944,663	$ 725,500
Letter of credit, outstanding	9,500
Credit facility, remaining	$ 1,500,000
Credit facility, additional interest rate above LIBOR	1.13%
Debt Instrument Interest Additional Interest Above Fed Funds Rate	0.50%
Debt Instrument, Interest Rate, Increase (Decrease)	1.00%
Debt Instrument Interest Additional Interest Above LIBOR Rate Alternative	0.13%
Credit facility, average interest rate	2.33%
Variable commitment fee	0.15%
Term loan, amount	$ 950,708	$ 732,126
Credit facility, interest rate	6.79%
Line of credit, Current and Noncurrent, Foreign	$ 5,900
Debt Instrument, Interest Coverage Ratio Range, High	100.00%
Debt Instrument, Leverage Ratio Range, Low	350.00%
Debt Instrument, Leverage Ratio Range, High	100.00%
Debt Instrument, Qualified Leverage Ratio Range, Low	400.00%
Debt Instrument, Qualified Leverage Ratio Range, High	100.00%

Debt Disclosure [Line Items]

No definition available.

Name:	midd_DebtDisclosureLineItems
Namespace Prefix:	midd_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Debt Instrument Interest Additional Interest Above Fed Funds Rate

+ References

No definition available.

+ Details

Name:	midd_DebtInstrumentInterestAdditionalInterestAboveFedFundsRate
Namespace Prefix:	midd_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Debt Instrument Interest Additional Interest Above LIBOR Rate Alternative

+ References

No definition available.

+ Details

Name:	midd_DebtInstrumentInterestAdditionalInterestAboveLIBORRateAlternative
Namespace Prefix:	midd_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Debt Instrument Interest Additional Interest Above LIBOR Rate

+ References

No definition available.

+ Details

Name:	midd_DebtInstrumentInterestAdditionalInterestAboveLiborRate
Namespace Prefix:	midd_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Debt Instrument, Interest Coverage Ratio Range, High

+ References

No definition available.

+ Details

Name:	midd_DebtInstrumentInterestCoverageRatioRangeHigh
Namespace Prefix:	midd_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Debt Instrument, Interest Coverage Ratio Range, Low

+ References

No definition available.

+ Details

Name:	midd_DebtInstrumentInterestCoverageRatioRangeLow
Namespace Prefix:	midd_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Debt Instrument, Leverage Ratio Range, High

+ References

No definition available.

+ Details

Name:	midd_DebtInstrumentLeverageRatioRangeHigh
Namespace Prefix:	midd_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Debt Instrument, Leverage Ratio Range, Low

+ References

No definition available.

+ Details

Name:	midd_DebtInstrumentLeverageRatioRangeLow
Namespace Prefix:	midd_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Debt Instrument, Qualified Leverage Ratio Range, High

+ References

No definition available.

+ Details

Name:	midd_DebtInstrumentQualifiedLeverageRatioRangeHigh
Namespace Prefix:	midd_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Debt Instrument, Qualified Leverage Ratio Range, Low

+ References

No definition available.

+ Details

Name:	midd_DebtInstrumentQualifiedLeverageRatioRangeLow
Namespace Prefix:	midd_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Derivative Fixed Interest Rate, NonCurrent

+ References

No definition available.

+ Details

Name:	midd_DerivativeFixedInterestRateNonCurrent
Namespace Prefix:	midd_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Derivative Notional Amount, NonCurrent

+ References

No definition available.

+ Details

Name:	midd_DerivativeNotionalAmountNonCurrent
Namespace Prefix:	midd_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Line of Credit, Average Interest Rate

+ References

No definition available.

+ Details

Name:	midd_LineOfCreditAverageInterestRate
Namespace Prefix:	midd_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Line of credit, Current and Noncurrent, Foreign

+ References

No definition available.

+ Details

Name:	midd_LineofcreditCurrentandNoncurrentForeign
Namespace Prefix:	midd_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

+ 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(22))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: 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

Reference 3: 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

+ Details

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

- Definition

Incremental percentage increase (decrease) in the stated rate on a debt instrument.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentInterestRateIncreaseDecrease
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- 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

- 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

+ Details

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

- Definition

The fee, expressed as a percentage of the line of credit facility, for the line of credit facility regardless of whether the facility has been used.

+ References

No definition available.

+ Details

Name:	us-gaap_LineOfCreditFacilityCommitmentFeePercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The effective interest rate at the end of the reporting period.

+ References

+ Details

Name:	us-gaap_LineOfCreditFacilityInterestRateAtPeriodEnd
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- 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

+ Details

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

- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

+ Details

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