XML 53 R61.htm IDEA: XBRL DOCUMENT v2.3.0.11

Business Segments (Details)	6 Months Ended
Business Segments (Details)	Jun. 30, 2011
Business Segments
Segment Reporting, Number of Segments	2

X

- Details

Name:	eix_BusinessSegmentsDisclosureAbstract
Namespace Prefix:	eix
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The number of segments in the entity's operations.

+ Details

Name:	eix_SegmentReportingNumberOfSegments
Namespace Prefix:	eix
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration