XML 82 R70.htm IDEA: XBRL DOCUMENT v3.21.1

Segment Reporting (Narrative) (Details)	3 Months Ended
	Mar. 31, 2021
Segment Reporting [Abstract]
Percentage threshold of Company revenue not exceeded by any other country	5.00%

X

- References

No definition available.

+ Details

Name:	re_PercentageThresholdOfCompanyRevenueNotExceededByAnyOtherCountry
Namespace Prefix:	re_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	us-gaap_SegmentReportingAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration