XML 63 R49.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2

Summary of Significant Accounting Policies (General) (Details)	Dec. 31, 2019 mi²
General [Abstract]
Area of Services, in Square Miles	10,000

X

- Definition

Area of services in square miles.

+ References

No definition available.

+ Details

Name:	ee_AreaofServicesinSquareMiles
Namespace Prefix:	ee_
Data Type:	num:areaItemType
Balance Type:	na
Period Type:	instant

X

- Definition

General [Abstract]

+ References

No definition available.

+ Details

Name:	ee_GeneralAbstract
Namespace Prefix:	ee_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration