Business Combination, Integration Related Liabilities

No definition available.

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Namespace Prefix:	mtz_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- 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

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The pro forma net Income or Loss for the period as if the business combination or combinations had been completed at the beginning of a period.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(3)
-URI https://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(2)
-URI https://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The pro forma revenue for a period as if the business combination or combinations had been completed at the beginning of the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(2)
-URI https://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(3)
-URI https://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Costs incurred to effect a business combination which have been expensed during the period. Such costs could include business integration costs, systems integration and conversion costs, and severance and other employee-related costs.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

This element represents the amount of earnings or loss of the acquiree since the acquisition date included in the consolidated income statement for the reporting period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(1)
-URI https://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

This element represents the amount of revenue of the acquiree since the acquisition date included in the consolidated income statement for the reporting period.

+ References

+ Details

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- Details

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- Details

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- Details

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Acquisitions, Goodwill and Other Intangible Assets, Net - Pro Forma Financial Information and Acquisition Results and Integration Costs (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Business Combinations [Line Items]
Business combinations, unaudited supplemental pro forma revenue	$ 11,600.0	$ 12,300.0	$ 9,400.0
Business combinations, unaudited supplemental pro forma net income	14.2	229.1	366.8
Business combinations, consolidated acquisition-related revenue	2,990.1	1,021.8	229.9
Business combinations, consolidated acquisition-related net income	53.9	6.6	$ (6.7)
All other, INTREN acquisition
Business Combinations [Line Items]
Business combinations, consolidated acquisition-related revenue		436.0
2021 Acquisitions, Henkels & McCoy Group, Inc. And INTREN
Business Combinations [Line Items]
Business combinations, consolidated acquisition-related revenue	1,902.4
2021 and 2022 Acquisitions
Business Combinations [Line Items]
Acquisition and integration costs	86.0
Integration related liabilities	5.5
2021 and 2022 Acquisitions \| General and Administrative Expense
Business Combinations [Line Items]
Acquisition and integration costs	52.0
2021 and 2022 Acquisitions \| Cost of Sales
Business Combinations [Line Items]
Acquisition and integration costs	29.3
2021 and 2022 Acquisitions \| Other Expense
Business Combinations [Line Items]
Acquisition and integration costs	4.7
IEA
Business Combinations [Line Items]
Business combinations, consolidated acquisition-related revenue	$ 567.2
2021 Acquisitions
Business Combinations [Line Items]
Acquisition and integration costs		3.6
2021 Acquisitions \| General and Administrative Expense
Business Combinations [Line Items]
Acquisition and integration costs		$ 3.6