XML 68 R53.htm IDEA: XBRL DOCUMENT v3.25.0.1

Revenue from Contracts with Customers - Schedule of Performance Obligation Satisfied in Previous Period (Details) - USD ($)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
UNITED STATES
Performance Obligation Satisfied in Previous Period [Line Items]
Performance obligation satisfied in previous period	$ 24,557,000	$ 16,464,000	$ 0
UNITED STATES | United States Electrical Construction And Facilities Services
Performance Obligation Satisfied in Previous Period [Line Items]
Performance obligation satisfied in previous period	14,006,000	3,350,000
UNITED STATES | United States Mechanical Construction And Facilities Services
Performance Obligation Satisfied in Previous Period [Line Items]
Performance obligation satisfied in previous period	10,551,000	$ 13,114,000
Minimum
Performance Obligation Satisfied in Previous Period [Line Items]
Performance obligation satisfied in previous period	$ 1,000,000

X

- Definition

Performance Obligation Satisfied in Previous Period [Line Items]

+ References

No definition available.

+ Details

Name:	eme_PerformanceObligationSatisfiedInPreviousPeriodLineItems
Namespace Prefix:	eme_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of revenue recognized from performance obligation satisfied or partially satisfied in previous reporting periods. Includes, but is not limited to, change in transaction price.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 12A
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479806/606-10-50-12A

+ Details

Name:	us-gaap_ContractWithCustomerPerformanceObligationSatisfiedInPreviousPeriod
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Details

Name:	srt_StatementGeographicalAxis=country_US
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=eme_UnitedStatesElectricalConstructionAndFacilitiesServicesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=eme_UnitedStatesMechanicalConstructionAndFacilitiesServicesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: