XML 94 R60.htm IDEA: XBRL DOCUMENT v3.22.4

Investments - Residential Mortgage Loans, Percentage by Geographical Location (Details) - USD ($) $ in Millions					12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2022	Dec. 31, 2021
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage loans		$ 24,148				$ 24,148
Residential Mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage loans	$ 10,703	$ 7,251			$ 10,703	7,251
Residential Mortgage [Member] | Geographic Concentration Risk | Mortgage Loans, Net
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage of Total	100.00%	100.00%
Commercial Real Estate Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage loans	$ 20,108	$ 16,897			20,108	16,897
Commercial Real Estate Portfolio Segment [Member] | Office building
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage loans	4,651	4,870			4,651	4,870
Commercial Real Estate Portfolio Segment [Member] | Retail
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage loans	1,454	2,022			1,454	2,022
Commercial Real Estate Portfolio Segment [Member] | Apartment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage loans	6,692	4,626			6,692	4,626
Commercial Real Estate Portfolio Segment [Member] | Hotels
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage loans	1,855	1,727			1,855	1,727
Commercial Real Estate Portfolio Segment [Member] | Industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage loans	2,047	2,336			2,047	2,336
Commercial Real Estate Portfolio Segment [Member] | Other commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage loans	$ 3,409	$ 1,316			3,409	1,316
Commercial Real Estate Portfolio Segment [Member] | Geographic Concentration Risk | Mortgage Loans, Net
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage of Total			100.00%	100.00%
Commercial Real Estate Portfolio Segment [Member] | Property Type Concentration Risk | Mortgage Loans, Net
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage of Total			100.00%	100.00%
Commercial Real Estate Portfolio Segment [Member] | Property Type Concentration Risk | Mortgage Loans, Net | Office building
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage of Total			23.10%	28.80%
Commercial Real Estate Portfolio Segment [Member] | Property Type Concentration Risk | Mortgage Loans, Net | Retail
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage of Total			7.20%	12.00%
Commercial Real Estate Portfolio Segment [Member] | Property Type Concentration Risk | Mortgage Loans, Net | Apartment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage of Total			33.30%	27.40%
Commercial Real Estate Portfolio Segment [Member] | Property Type Concentration Risk | Mortgage Loans, Net | Hotels
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage of Total			9.20%	10.20%
Commercial Real Estate Portfolio Segment [Member] | Property Type Concentration Risk | Mortgage Loans, Net | Industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage of Total			10.20%	13.80%
Commercial Real Estate Portfolio Segment [Member] | Property Type Concentration Risk | Mortgage Loans, Net | Other commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage of Total			17.00%	7.80%
Total US region | Residential Mortgage [Member] | Geographic Concentration Risk | Mortgage Loans, Net
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage of Total	86.30%	88.20%
Total US region | Commercial Real Estate Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage loans	$ 16,860	$ 14,796			16,860	14,796
Total US region | Commercial Real Estate Portfolio Segment [Member] | Geographic Concentration Risk | Mortgage Loans, Net
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage of Total			83.90%	87.50%
California | Residential Mortgage [Member] | Geographic Concentration Risk | Mortgage Loans, Net
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage of Total	28.90%	28.40%
Florida | Residential Mortgage [Member] | Geographic Concentration Risk | Mortgage Loans, Net
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage of Total	9.70%	11.40%
New York | Residential Mortgage [Member] | Geographic Concentration Risk | Mortgage Loans, Net
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage of Total	5.60%	4.80%
Other U.S. States | Residential Mortgage [Member] | Geographic Concentration Risk | Mortgage Loans, Net
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage of Total	31.70%	36.70%
IRELAND | Residential Mortgage [Member] | Geographic Concentration Risk | Mortgage Loans, Net
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage of Total	3.00%	6.40%
International Other | Residential Mortgage [Member] | Geographic Concentration Risk | Mortgage Loans, Net
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage of Total	5.30%	1.60%
International Other | Commercial Real Estate Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage loans	$ 1,350	$ 822			$ 1,350	$ 822
International Other | Commercial Real Estate Portfolio Segment [Member] | Geographic Concentration Risk | Mortgage Loans, Net
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage of Total					6.70%	4.90%
International | Residential Mortgage [Member] | Geographic Concentration Risk | Mortgage Loans, Net
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage of Total	13.70%	11.80%
International | Commercial Real Estate Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage loans	$ 3,248	$ 2,101			$ 3,248	$ 2,101
International | Commercial Real Estate Portfolio Segment [Member] | Geographic Concentration Risk | Mortgage Loans, Net
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage of Total					16.10%	12.50%
NEW JERSEY | Residential Mortgage [Member] | Geographic Concentration Risk | Mortgage Loans, Net
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage of Total	5.30%	5.10%
ARIZONA | Residential Mortgage [Member] | Geographic Concentration Risk | Mortgage Loans, Net
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage of Total	5.10%	1.80%
UNITED KINGDOM | Residential Mortgage [Member] | Geographic Concentration Risk | Mortgage Loans, Net
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage of Total	5.40%	3.80%
UNITED KINGDOM | Commercial Real Estate Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage loans	$ 1,898	$ 1,279			$ 1,898	$ 1,279
UNITED KINGDOM | Commercial Real Estate Portfolio Segment [Member] | Geographic Concentration Risk | Mortgage Loans, Net
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage of Total					9.40%	7.60%
East North Central | Commercial Real Estate Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage loans	1,437	1,697			$ 1,437	$ 1,697
East North Central | Commercial Real Estate Portfolio Segment [Member] | Geographic Concentration Risk | Mortgage Loans, Net
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage of Total			7.10%	10.00%
East South Central | Commercial Real Estate Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage loans	413	470			413	470
East South Central | Commercial Real Estate Portfolio Segment [Member] | Geographic Concentration Risk | Mortgage Loans, Net
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage of Total			2.10%	2.80%
Middle Atlantic | Commercial Real Estate Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage loans	5,183	3,637			5,183	3,637
Middle Atlantic | Commercial Real Estate Portfolio Segment [Member] | Geographic Concentration Risk | Mortgage Loans, Net
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage of Total			25.80%	21.50%
Mountain | Commercial Real Estate Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage loans	898	460			898	460
Mountain | Commercial Real Estate Portfolio Segment [Member] | Geographic Concentration Risk | Mortgage Loans, Net
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage of Total			4.50%	2.70%
New England | Commercial Real Estate Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage loans	1,076	453			1,076	453
New England | Commercial Real Estate Portfolio Segment [Member] | Geographic Concentration Risk | Mortgage Loans, Net
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage of Total			5.40%	2.70%
Pacific | Commercial Real Estate Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage loans	3,781	3,994			3,781	3,994
Pacific | Commercial Real Estate Portfolio Segment [Member] | Geographic Concentration Risk | Mortgage Loans, Net
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage of Total			18.80%	23.60%
South Atlantic | Commercial Real Estate Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage loans	2,756	2,817			2,756	2,817
South Atlantic | Commercial Real Estate Portfolio Segment [Member] | Geographic Concentration Risk | Mortgage Loans, Net
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage of Total			13.70%	16.70%
West North Central | Commercial Real Estate Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage loans	231	271			231	271
West North Central | Commercial Real Estate Portfolio Segment [Member] | Geographic Concentration Risk | Mortgage Loans, Net
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage of Total			1.10%	1.60%
West South Central | Commercial Real Estate Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage loans	$ 1,085	$ 997			$ 1,085	$ 997
West South Central | Commercial Real Estate Portfolio Segment [Member] | Geographic Concentration Risk | Mortgage Loans, Net
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage of Total			5.40%	5.90%

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

X

- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 42
-URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e9054-108599

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 18
-URI https://asc.fasb.org/extlink&oid=99393423&loc=d3e6351-108592

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 20
-URI https://asc.fasb.org/extlink&oid=123594938&loc=d3e13531-108611

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 21
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=123594938&loc=d3e13537-108611

Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 20
-URI https://asc.fasb.org/extlink&oid=99393423&loc=d3e6404-108592

+ Details

Name:	us-gaap_ConcentrationRiskPercentage1
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The balance represents the amount of loans that are secured by real estate mortgages, offset by the reserve to cover probable credit losses on the loan portfolio.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.1(c))
-URI https://asc.fasb.org/extlink&oid=126734703&loc=d3e572229-122910

+ Details

Name:	us-gaap_MortgageLoansOnRealEstateCommercialAndConsumerNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_ResidentialMortgageMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ConcentrationRiskByTypeAxis=us-gaap_GeographicConcentrationRiskMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ConcentrationRiskByBenchmarkAxis=ahl_MortgageLoansNetMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_CommercialRealEstatePortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis=srt_OfficeBuildingMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis=srt_RetailSiteMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis=srt_ApartmentBuildingMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis=srt_HotelMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis=srt_IndustrialPropertyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis=srt_OtherPropertyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ConcentrationRiskByTypeAxis=ahl_PropertyTypeConcentrationRiskMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_StatementGeographicalAxis=country_US
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_StatementGeographicalAxis=stpr_CA
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_StatementGeographicalAxis=stpr_FL
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_StatementGeographicalAxis=stpr_NY
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_StatementGeographicalAxis=ahl_OtherU.S.StatesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_StatementGeographicalAxis=country_IE
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_StatementGeographicalAxis=ahl_InternationalOtherMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_StatementGeographicalAxis=ahl_InternationalMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_StatementGeographicalAxis=stpr_NJ
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_StatementGeographicalAxis=stpr_AZ
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_StatementGeographicalAxis=country_GB
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_StatementGeographicalAxis=ahl_U.SEastNorthCentralMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_StatementGeographicalAxis=ahl_U.S.EastSouthCentralMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_StatementGeographicalAxis=ahl_U.S.MiddleAtlanticMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_StatementGeographicalAxis=ahl_U.S.MountainMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_StatementGeographicalAxis=ahl_U.S.NewEnglandMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_StatementGeographicalAxis=ahl_U.S.PacificMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_StatementGeographicalAxis=ahl_U.S.SouthAtlanticMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_StatementGeographicalAxis=ahl_U.S.WestNorthCentralMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_StatementGeographicalAxis=ahl_U.S.WestSouthCentralMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: