Contingent Consideration Paid

Name:	midd_ContingentConsiderationPaid
Namespace Prefix:	midd
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The calculated weighted-average amortization period of a major class of finite-lived intangible assets acquired during the current period either individually or as part of a group of assets (in either an asset acquisition or business combination). A major class is composed of intangible assets that can be grouped together because they are similar, either by their nature or by their use in the operations of a company.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 142

-Paragraph 44

-Subparagraph a(3)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 1

-Subparagraph (a)(3)

-URI http://asc.fasb.org/extlink&oid=6905858&loc=d3e16265-109275

+ Details

Name:	us-gaap_AcquiredFiniteLivedIntangibleAssetWeightedAverageUsefulLife
Namespace Prefix:	us-gaap
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of cash paid to acquire the entity.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141

-Paragraph 51

-Subparagraph d

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141R

-Paragraph 68

-Subparagraph f(1)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Name:	us-gaap_BusinessAcquisitionCostOfAcquiredEntityCashPaid
Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The acquisition-date fair value of the equity interests of the acquirer, including the number of instruments or interests issued or issuable in consideration for the business combination.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141R

-Paragraph 68

-Subparagraph f(4)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141

-Paragraph 51

-Subparagraph d

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Emerging Issues Task Force (EITF)

-Number 88-16

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141R

-Paragraph 39

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Name:	us-gaap_BusinessAcquisitionCostOfAcquiredEntityEquityInterestsIssuedAndIssuable
Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The total cost of the acquired entity including the cash paid to shareholders of acquired entities, fair value of debt and equity securities issued to shareholders of acquired entities, the fair value of the liabilities assumed, and direct costs of the acquisition.

+ References

+ Details

Name:	us-gaap_BusinessAcquisitionCostOfAcquiredEntityPurchasePrice
Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Number of shares of equity interests issued or issuable to acquire entity.

+ References

+ Details

Name:	us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued
Namespace Prefix:	us-gaap
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- 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.

+ Details

Name:	us-gaap_BusinessAcquisitionLineItems
Namespace Prefix:	us-gaap
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The amount of acquisition cost of a business combination allocated to an identifiable intangible asset that will be amortized.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141

-Paragraph 51

-Subparagraph e

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141

-Paragraph 52

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Name:	us-gaap_BusinessAcquisitionPurchasePriceAllocationAmortizableIntangibleAssets
Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The amount of acquisition cost of a business combination allocated to an identifiable intangible asset that will not be amortized. Does not include goodwill.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141

-Paragraph 51

-Subparagraph e

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141

-Paragraph 52

-Subparagraph b

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Name:	us-gaap_BusinessAcquisitionPurchasePriceAllocationIntangibleAssetsNotAmortizable
Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Acquisitions and Purchase Accounting - Additional Information (Detail) (USD $) In Millions, except Share data, unless otherwise specified			9 Months Ended		9 Months Ended		1 Months Ended	3 Months Ended		9 Months Ended		9 Months Ended				9 Months Ended				9 Months Ended		9 Months Ended				9 Months Ended		9 Months Ended		9 Months Ended				9 Months Ended		9 Months Ended				9 Months Ended		9 Months Ended		9 Months Ended
	Jul. 13, 2010 PerfectFry	Jul. 13, 2010 PerfectFry Commercial Foodservice Equipment Group Trade Names	Oct. 01, 2011 PerfectFry Commercial Foodservice Equipment Group Developed Technology Rights Year	Jul. 13, 2010 PerfectFry Commercial Foodservice Equipment Group Developed Technology Rights	Oct. 01, 2011 PerfectFry Commercial Foodservice Equipment Group Customer Relationships Year	Jul. 13, 2010 PerfectFry Commercial Foodservice Equipment Group Customer Relationships	Sep. 21, 2010 Cozzini	Apr. 02, 2011 Cozzini	Sep. 21, 2010 Cozzini Food Processing Group Trade Names	Oct. 01, 2011 Cozzini Food Processing Group Customer Relationships Year	Sep. 21, 2010 Cozzini Food Processing Group Customer Relationships	Oct. 01, 2011 Cozzini Food Processing Group Backlog Year	Sep. 21, 2010 Cozzini Food Processing Group Backlog	Apr. 12, 2011 Beech	Apr. 12, 2011 Beech Commercial Foodservice Equipment Group Trade Names	Oct. 01, 2011 Beech Commercial Foodservice Equipment Group Backlog Month	Apr. 12, 2011 Beech Commercial Foodservice Equipment Group Backlog	May 27, 2011 Lincat	May 27, 2011 Lincat Commercial Foodservice Equipment Group Trade Names	Oct. 01, 2011 Lincat Commercial Foodservice Equipment Group Customer Relationships Year	May 27, 2011 Lincat Commercial Foodservice Equipment Group Customer Relationships	Oct. 01, 2011 Lincat Commercial Foodservice Equipment Group Backlog Month	May 27, 2011 Lincat Commercial Foodservice Equipment Group Backlog	Jul. 05, 2011 Danfotech	Jul. 05, 2011 Danfotech Food Processing Group Trade Names	Oct. 01, 2011 Danfotech Food Processing Group Developed Technology Rights Year	Jul. 05, 2011 Danfotech Food Processing Group Developed Technology Rights	Oct. 01, 2011 Danfotech Food Processing Group Customer Relationships Year	Jul. 05, 2011 Danfotech Food Processing Group Customer Relationships	Oct. 01, 2011 Danfotech Food Processing Group Backlog Month	Jul. 05, 2011 Danfotech Food Processing Group Backlog	Jul. 22, 2011 Maurer	Jul. 22, 2011 Maurer Food Processing Group Trade Names	Oct. 01, 2011 Maurer Food Processing Group Developed Technology Rights Year	Jul. 22, 2011 Maurer Food Processing Group Developed Technology Rights	Oct. 01, 2011 Maurer Food Processing Group Customer Relationships Year	Jul. 22, 2011 Maurer Food Processing Group Customer Relationships	Aug. 01, 2011 Auto-Bake	Aug. 01, 2011 Auto-Bake Food Processing Group Trade Names	Oct. 01, 2011 Auto-Bake Food Processing Group Developed Technology Rights Year	Aug. 01, 2011 Auto-Bake Food Processing Group Developed Technology Rights	Oct. 01, 2011 Auto-Bake Food Processing Group Customer Relationships Year	Aug. 01, 2011 Auto-Bake Food Processing Group Customer Relationships	Oct. 01, 2011 Auto-Bake Food Processing Group Backlog Month	Aug. 01, 2011 Auto-Bake Food Processing Group Backlog
Business Acquisition [Line Items]
Acquisition, purchase price	$ 4.9						$ 19.2							$ 13.5				$ 94.5						$ 6.3								$ 3.8						$ 22.6
Acquisition, purchase price, cash							17.4
Acquisition, purchase price, shares							34,263
Acquisition, purchase price, stock value							1.8
Acquisitions, earnout /contingent payment made								2.0
Acquisition, other intangibles subject to non-amortization provision		1.2							3.6						1.9				13.2						1.1								0.6						4.1
Acquisition, other intangibles, amortized				$ 0.1		$ 0.3					$ 2.7		$ 1.4				$ 0.1				$ 13.0		$ 0.4				$ 0.1		$ 0.6		$ 0.1				$ 0.1		$ 0.3				$ 0.2		$ 2.3		$ 0.2
Acquisition, other intangibles, amortization period			5,000,000		5,000,000					4,000,000		3,000,000				3,000,000				5,000,000		3,000,000				3,000,000		4,000,000		3,000,000				3,000,000		4,000,000				3,000,000		4,000,000		3,000,000