XML 76 R57.htm IDEA: XBRL DOCUMENT v3.20.4

SEGMENT INFORMATION - Net premiums earned (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Segment Information [Line Items]
Net premiums earned	$ 1,087,368	$ 1,091,312	$ 1,104,003	$ 1,088,625	$ 1,172,051	$ 1,157,307	$ 1,123,607	$ 1,134,212	$ 4,371,309	$ 4,587,178	$ 4,791,495
Operating Segments
Segment Information [Line Items]
Net premiums earned									4,371,309	4,587,178	4,791,495
Operating Segments | Reinsurance
Segment Information [Line Items]
Net premiums earned									2,072,271	2,397,094	2,428,889
Operating Segments | Reinsurance | Property
Segment Information [Line Items]
Net premiums earned									256,244	311,625	317,038
Operating Segments | Reinsurance | Catastrophe
Segment Information [Line Items]
Net premiums earned									244,934	267,591	250,016
Operating Segments | Reinsurance | Credit and surety
Segment Information [Line Items]
Net premiums earned									187,721	208,717	250,276
Operating Segments | Reinsurance | Professional lines
Segment Information [Line Items]
Net premiums earned									207,605	206,328	220,687
Operating Segments | Reinsurance | Liability
Segment Information [Line Items]
Net premiums earned									396,906	373,664	363,292
Operating Segments | Reinsurance | Accident and health
Segment Information [Line Items]
Net premiums earned									333,996	319,619	299,813
Operating Segments | Reinsurance | Discontinued lines - Novae
Segment Information [Line Items]
Net premiums earned									1,216	(1,048)	9,137
Operating Segments | Reinsurance | Motor
Segment Information [Line Items]
Net premiums earned									255,916	398,565	438,693
Operating Segments | Reinsurance | Engineering
Segment Information [Line Items]
Net premiums earned									60,521	63,899	67,932
Operating Segments | Reinsurance | Agriculture
Segment Information [Line Items]
Net premiums earned									73,696	188,925	176,435
Operating Segments | Reinsurance | Marine and aviation
Segment Information [Line Items]
Net premiums earned									53,516	59,209	35,570
Operating Segments | Insurance
Segment Information [Line Items]
Net premiums earned									2,299,038	2,190,084	2,362,606
Operating Segments | Insurance | Property
Segment Information [Line Items]
Net premiums earned									605,650	633,550	796,945
Operating Segments | Insurance | Marine
Segment Information [Line Items]
Net premiums earned									293,746	281,764	300,944
Operating Segments | Insurance | Terrorism
Segment Information [Line Items]
Net premiums earned									47,378	47,345	49,150
Operating Segments | Insurance | Aviation
Segment Information [Line Items]
Net premiums earned									70,910	55,028	74,203
Operating Segments | Insurance | Credit and political risk
Segment Information [Line Items]
Net premiums earned									105,869	91,698	102,825
Operating Segments | Insurance | Professional lines
Segment Information [Line Items]
Net premiums earned									715,276	661,250	570,241
Operating Segments | Insurance | Liability
Segment Information [Line Items]
Net premiums earned									313,291	264,667	229,373
Operating Segments | Insurance | Accident and health
Segment Information [Line Items]
Net premiums earned									143,723	144,499	207,777
Operating Segments | Insurance | Discontinued lines - Novae
Segment Information [Line Items]
Net premiums earned									$ 3,195	$ 10,283	$ 31,148

X

- Definition

Amount, after premiums ceded to other entities and premiums assumed by the entity, of premiums earned.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 220
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-04(1))
-URI http://asc.fasb.org/extlink&oid=120400993&loc=SL114874131-224263

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 235
-Section S99
-Paragraph 2
-Subparagraph (SX 210.12-17(Column E))
-URI http://asc.fasb.org/extlink&oid=120401096&loc=d3e574992-122915

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 220
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04(13)(c))
-URI http://asc.fasb.org/extlink&oid=120399700&loc=SL114874048-224260

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 605
-Section 50
-Paragraph 1
-Subparagraph (c)(3)
-URI http://asc.fasb.org/extlink&oid=6486672&loc=d3e27261-158547

+ Details

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

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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

X

- Details

Name:	srt_ConsolidationItemsAxis=us-gaap_OperatingSegmentsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

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

X

- Details

Name:	srt_ProductOrServiceAxis=us-gaap_PropertyInsuranceProductLineMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_ProductOrServiceAxis=axs_CatastropheReinsuranceMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_ProductOrServiceAxis=axs_CreditAndBondMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_ProductOrServiceAxis=axs_ProfessionalLinesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_ProductOrServiceAxis=axs_LiabilityLineMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_ProductOrServiceAxis=us-gaap_AccidentAndHealthInsuranceSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_ProductOrServiceAxis=axs_DiscontinuedLinesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_ProductOrServiceAxis=axs_MotorMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_ProductOrServiceAxis=axs_EngineeringMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_ProductOrServiceAxis=axs_AgricultureLineMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_ProductOrServiceAxis=axs_MarineAndOtherLinesOfBusinessMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

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

X

- Details

Name:	srt_ProductOrServiceAxis=axs_MarineMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_ProductOrServiceAxis=axs_TerrorismMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_ProductOrServiceAxis=axs_AviationMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_ProductOrServiceAxis=axs_CreditAndPoliticalRiskMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: