Name:	mtz_ConsentFeePercentageOfPrincipalAmountNoteHolders
Namespace Prefix:	mtz_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

The amount, expressed in terms of basis points, or percentage points, paid to a solicitation agent to obtain a consent pertaining to a financial instrument.

No definition available.

Name:	mtz_ConsentFeePercentageOfPrincipalAmountSolicitationAgent
Namespace Prefix:	mtz_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

The maximum period of time within which the cause of a potential event of default on a debt instrument can be cured by the debt holder, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

No definition available.

Name:	mtz_DebtInstrumentCurePeriod
Namespace Prefix:	mtz_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

The amount paid to debt holders to obtain a consent pertaining to a debt instrument.

No definition available.

Name:	mtz_PaymentsForConsentFeeNoteHolders
Namespace Prefix:	mtz_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

The amount paid to a solicitation agent to obtain a consent pertaining to a financial instrument.

No definition available.

Name:	mtz_PaymentsforConsentFeeSolicitationAgent
Namespace Prefix:	mtz_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Face (par) amount of debt instrument at time of issuance.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 55

-Paragraph 8

-URI http://asc.fasb.org/extlink&oid=34725769&loc=d3e28878-108400

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399

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

Contractual interest rate for funds borrowed, under the debt agreement.

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(a)(1))

-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 22

-Article 5

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

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.

No definition available.