XML 51 R31.htm IDEA: XBRL DOCUMENT
v3.19.3.a.u2

Subsequent Event Subsequent Event | 12 Months Ended
--- | ---
Dec. 31, 2019
Subsequent Event [Abstract] |
Subsequent Event | SUBSEQUENT EVENTS In January 2020, we acquired a company for an immaterial amount. This company provides mobile mechanical services within the Northeastern region of the United States, and its results will be included in our United States building services segment. The acquisition of this business will be accounted for by the acquisition method, and the amount paid will be allocated to its respective assets and liabilities, based upon the estimated fair value of such assets and liabilities at the date of acquisition by us. On February 15, 2020, we became aware of an infiltration and encryption of portions of our information technology network. This attack disrupted our operations that utilize the impacted portions of the network. We continue to assess the magnitude of the consequences and we are actively seeking to mitigate the effects. As of the date of this filing, we continue our efforts to restore the portions of such systems that remain impacted. We are unable to predict when the entire network will be functional. We are additionally unable to estimate precisely the total costs which will result from the attack and the remediation efforts. We maintain insurance coverage for these types of incidents, however, such policies may not completely provide coverage for, or offset the costs of, this infiltration.

X
- Definition Subsequent Event [Abstract] + References No definition available. + Details
Name: | eme_SubsequentEventAbstract
Namespace Prefix: | eme_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 855 -URI http://asc.fasb.org/topic&trid=2122774 + Details
Name: | us-gaap_SubsequentEventsTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration