Investments (Schedule Of Amortized Cost And Fair Value Of Fixed Maturities And Related Other-Than-Temporary Impairment Recognized In Accumulated Other Comprehensive Income) (Detail) (USD $) In Millions, unless otherwise specified
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Dec. 31, 2014
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Dec. 31, 2013
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Investment [Line Items] |
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Available for sale, Amortized Cost |
$ 47,826us-gaap_AvailableForSaleSecuritiesAmortizedCost |
$ 48,406us-gaap_AvailableForSaleSecuritiesAmortizedCost |
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax |
1,871us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax |
1,465us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax |
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax |
(302)us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax |
(617)us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax |
Available for sale, Fair Value |
49,395us-gaap_AvailableForSaleSecuritiesDebtSecurities |
49,254us-gaap_AvailableForSaleSecuritiesDebtSecurities |
Available for sale, OTTI recognized in AOCI |
(8)us-gaap_AccumulatedOtherComprehensiveIncomeLossOtherThanTemporaryImpairmentNotCreditLossNetOfTaxAvailableforsaleDebtSecurities |
(40)us-gaap_AccumulatedOtherComprehensiveIncomeLossOtherThanTemporaryImpairmentNotCreditLossNetOfTaxAvailableforsaleDebtSecurities |
Held to maturity, Amortized Cost |
7,331us-gaap_HeldToMaturitySecurities |
6,098us-gaap_HeldToMaturitySecurities |
Held-to-maturity Securities, Accumulated Unrecognized Holding Gain |
266us-gaap_HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain |
187us-gaap_HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain |
Held-to-maturity Securities, Accumulated Unrecognized Holding Loss |
(8)us-gaap_HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss |
(22)us-gaap_HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss |
Held to maturity, Fair Value |
7,589us-gaap_HeldToMaturitySecuritiesFairValue |
6,263us-gaap_HeldToMaturitySecuritiesFairValue |
U.S. Treasury and agency |
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Investment [Line Items] |
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Available for sale, Amortized Cost |
2,741us-gaap_AvailableForSaleSecuritiesAmortizedCost / ace_FixedMaturitiesAndEquitiesAxis = us-gaap_USTreasuryAndGovernmentMember |
2,946us-gaap_AvailableForSaleSecuritiesAmortizedCost / ace_FixedMaturitiesAndEquitiesAxis = us-gaap_USTreasuryAndGovernmentMember |
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax |
87us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax / ace_FixedMaturitiesAndEquitiesAxis = us-gaap_USTreasuryAndGovernmentMember |
62us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax / ace_FixedMaturitiesAndEquitiesAxis = us-gaap_USTreasuryAndGovernmentMember |
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax |
(8)us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax / ace_FixedMaturitiesAndEquitiesAxis = us-gaap_USTreasuryAndGovernmentMember |
(59)us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax / ace_FixedMaturitiesAndEquitiesAxis = us-gaap_USTreasuryAndGovernmentMember |
Available for sale, Fair Value |
2,820us-gaap_AvailableForSaleSecuritiesDebtSecurities / ace_FixedMaturitiesAndEquitiesAxis = us-gaap_USTreasuryAndGovernmentMember |
2,949us-gaap_AvailableForSaleSecuritiesDebtSecurities / ace_FixedMaturitiesAndEquitiesAxis = us-gaap_USTreasuryAndGovernmentMember |
Available for sale, OTTI recognized in AOCI |
0us-gaap_AccumulatedOtherComprehensiveIncomeLossOtherThanTemporaryImpairmentNotCreditLossNetOfTaxAvailableforsaleDebtSecurities / ace_FixedMaturitiesAndEquitiesAxis = us-gaap_USTreasuryAndGovernmentMember |
0us-gaap_AccumulatedOtherComprehensiveIncomeLossOtherThanTemporaryImpairmentNotCreditLossNetOfTaxAvailableforsaleDebtSecurities / ace_FixedMaturitiesAndEquitiesAxis = us-gaap_USTreasuryAndGovernmentMember |
Held to maturity, Amortized Cost |
832us-gaap_HeldToMaturitySecurities / ace_FixedMaturitiesAndEquitiesAxis = us-gaap_USTreasuryAndGovernmentMember |
820us-gaap_HeldToMaturitySecurities / ace_FixedMaturitiesAndEquitiesAxis = us-gaap_USTreasuryAndGovernmentMember |
Held-to-maturity Securities, Accumulated Unrecognized Holding Gain |
20us-gaap_HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain / ace_FixedMaturitiesAndEquitiesAxis = us-gaap_USTreasuryAndGovernmentMember |
16us-gaap_HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain / ace_FixedMaturitiesAndEquitiesAxis = us-gaap_USTreasuryAndGovernmentMember |
Held-to-maturity Securities, Accumulated Unrecognized Holding Loss |
(2)us-gaap_HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss / ace_FixedMaturitiesAndEquitiesAxis = us-gaap_USTreasuryAndGovernmentMember |
(4)us-gaap_HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss / ace_FixedMaturitiesAndEquitiesAxis = us-gaap_USTreasuryAndGovernmentMember |
Held to maturity, Fair Value |
850us-gaap_HeldToMaturitySecuritiesFairValue / ace_FixedMaturitiesAndEquitiesAxis = us-gaap_USTreasuryAndGovernmentMember |
832us-gaap_HeldToMaturitySecuritiesFairValue / ace_FixedMaturitiesAndEquitiesAxis = us-gaap_USTreasuryAndGovernmentMember |
Held to maturity, OTTI recognized in AOCI |
0us-gaap_AccumulatedOtherComprehensiveIncomeLossOtherThanTemporaryImpairmentNotCreditLossNetOfTaxHeldtomaturityDebtSecurities / ace_FixedMaturitiesAndEquitiesAxis = us-gaap_USTreasuryAndGovernmentMember |
0us-gaap_AccumulatedOtherComprehensiveIncomeLossOtherThanTemporaryImpairmentNotCreditLossNetOfTaxHeldtomaturityDebtSecurities / ace_FixedMaturitiesAndEquitiesAxis = us-gaap_USTreasuryAndGovernmentMember |
Foreign |
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Investment [Line Items] |
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Available for sale, Amortized Cost |
14,703us-gaap_AvailableForSaleSecuritiesAmortizedCost / ace_FixedMaturitiesAndEquitiesAxis = us-gaap_ForeignGovernmentDebtSecuritiesMember |
14,336us-gaap_AvailableForSaleSecuritiesAmortizedCost / ace_FixedMaturitiesAndEquitiesAxis = us-gaap_ForeignGovernmentDebtSecuritiesMember |
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax |
629us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax / ace_FixedMaturitiesAndEquitiesAxis = us-gaap_ForeignGovernmentDebtSecuritiesMember |
377us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax / ace_FixedMaturitiesAndEquitiesAxis = us-gaap_ForeignGovernmentDebtSecuritiesMember |
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax |
(90)us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax / ace_FixedMaturitiesAndEquitiesAxis = us-gaap_ForeignGovernmentDebtSecuritiesMember |
(122)us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax / ace_FixedMaturitiesAndEquitiesAxis = us-gaap_ForeignGovernmentDebtSecuritiesMember |
Available for sale, Fair Value |
15,242us-gaap_AvailableForSaleSecuritiesDebtSecurities / ace_FixedMaturitiesAndEquitiesAxis = us-gaap_ForeignGovernmentDebtSecuritiesMember |
14,591us-gaap_AvailableForSaleSecuritiesDebtSecurities / ace_FixedMaturitiesAndEquitiesAxis = us-gaap_ForeignGovernmentDebtSecuritiesMember |
Available for sale, OTTI recognized in AOCI |
0us-gaap_AccumulatedOtherComprehensiveIncomeLossOtherThanTemporaryImpairmentNotCreditLossNetOfTaxAvailableforsaleDebtSecurities / ace_FixedMaturitiesAndEquitiesAxis = us-gaap_ForeignGovernmentDebtSecuritiesMember |
0us-gaap_AccumulatedOtherComprehensiveIncomeLossOtherThanTemporaryImpairmentNotCreditLossNetOfTaxAvailableforsaleDebtSecurities / ace_FixedMaturitiesAndEquitiesAxis = us-gaap_ForeignGovernmentDebtSecuritiesMember |
Held to maturity, Amortized Cost |
916us-gaap_HeldToMaturitySecurities / ace_FixedMaturitiesAndEquitiesAxis = us-gaap_ForeignGovernmentDebtSecuritiesMember |
864us-gaap_HeldToMaturitySecurities / ace_FixedMaturitiesAndEquitiesAxis = us-gaap_ForeignGovernmentDebtSecuritiesMember |
Held-to-maturity Securities, Accumulated Unrecognized Holding Gain |
47us-gaap_HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain / ace_FixedMaturitiesAndEquitiesAxis = us-gaap_ForeignGovernmentDebtSecuritiesMember |
33us-gaap_HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain / ace_FixedMaturitiesAndEquitiesAxis = us-gaap_ForeignGovernmentDebtSecuritiesMember |
Held-to-maturity Securities, Accumulated Unrecognized Holding Loss |
0us-gaap_HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss / ace_FixedMaturitiesAndEquitiesAxis = us-gaap_ForeignGovernmentDebtSecuritiesMember |
0us-gaap_HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss / ace_FixedMaturitiesAndEquitiesAxis = us-gaap_ForeignGovernmentDebtSecuritiesMember |
Held to maturity, Fair Value |
963us-gaap_HeldToMaturitySecuritiesFairValue / ace_FixedMaturitiesAndEquitiesAxis = us-gaap_ForeignGovernmentDebtSecuritiesMember |
897us-gaap_HeldToMaturitySecuritiesFairValue / ace_FixedMaturitiesAndEquitiesAxis = us-gaap_ForeignGovernmentDebtSecuritiesMember |
Held to maturity, OTTI recognized in AOCI |
0us-gaap_AccumulatedOtherComprehensiveIncomeLossOtherThanTemporaryImpairmentNotCreditLossNetOfTaxHeldtomaturityDebtSecurities / ace_FixedMaturitiesAndEquitiesAxis = us-gaap_ForeignGovernmentDebtSecuritiesMember |
0us-gaap_AccumulatedOtherComprehensiveIncomeLossOtherThanTemporaryImpairmentNotCreditLossNetOfTaxHeldtomaturityDebtSecurities / ace_FixedMaturitiesAndEquitiesAxis = us-gaap_ForeignGovernmentDebtSecuritiesMember |
Corporate securities |
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Investment [Line Items] |
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Available for sale, Amortized Cost |
16,897us-gaap_AvailableForSaleSecuritiesAmortizedCost / ace_FixedMaturitiesAndEquitiesAxis = us-gaap_CorporateDebtSecuritiesMember |
16,825us-gaap_AvailableForSaleSecuritiesAmortizedCost / ace_FixedMaturitiesAndEquitiesAxis = us-gaap_CorporateDebtSecuritiesMember |
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax |
704us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax / ace_FixedMaturitiesAndEquitiesAxis = us-gaap_CorporateDebtSecuritiesMember |
777us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax / ace_FixedMaturitiesAndEquitiesAxis = us-gaap_CorporateDebtSecuritiesMember |
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax |
(170)us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax / ace_FixedMaturitiesAndEquitiesAxis = us-gaap_CorporateDebtSecuritiesMember |
(132)us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax / ace_FixedMaturitiesAndEquitiesAxis = us-gaap_CorporateDebtSecuritiesMember |
Available for sale, Fair Value |
17,431us-gaap_AvailableForSaleSecuritiesDebtSecurities / ace_FixedMaturitiesAndEquitiesAxis = us-gaap_CorporateDebtSecuritiesMember |
17,470us-gaap_AvailableForSaleSecuritiesDebtSecurities / ace_FixedMaturitiesAndEquitiesAxis = us-gaap_CorporateDebtSecuritiesMember |
Available for sale, OTTI recognized in AOCI |
(7)us-gaap_AccumulatedOtherComprehensiveIncomeLossOtherThanTemporaryImpairmentNotCreditLossNetOfTaxAvailableforsaleDebtSecurities / ace_FixedMaturitiesAndEquitiesAxis = us-gaap_CorporateDebtSecuritiesMember |
(6)us-gaap_AccumulatedOtherComprehensiveIncomeLossOtherThanTemporaryImpairmentNotCreditLossNetOfTaxAvailableforsaleDebtSecurities / ace_FixedMaturitiesAndEquitiesAxis = us-gaap_CorporateDebtSecuritiesMember |
Held to maturity, Amortized Cost |
2,323us-gaap_HeldToMaturitySecurities / ace_FixedMaturitiesAndEquitiesAxis = us-gaap_CorporateDebtSecuritiesMember |
1,922us-gaap_HeldToMaturitySecurities / ace_FixedMaturitiesAndEquitiesAxis = us-gaap_CorporateDebtSecuritiesMember |
Held-to-maturity Securities, Accumulated Unrecognized Holding Gain |
102us-gaap_HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain / ace_FixedMaturitiesAndEquitiesAxis = us-gaap_CorporateDebtSecuritiesMember |
83us-gaap_HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain / ace_FixedMaturitiesAndEquitiesAxis = us-gaap_CorporateDebtSecuritiesMember |
Held-to-maturity Securities, Accumulated Unrecognized Holding Loss |
(2)us-gaap_HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss / ace_FixedMaturitiesAndEquitiesAxis = us-gaap_CorporateDebtSecuritiesMember |
0us-gaap_HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss / ace_FixedMaturitiesAndEquitiesAxis = us-gaap_CorporateDebtSecuritiesMember |
Held to maturity, Fair Value |
2,423us-gaap_HeldToMaturitySecuritiesFairValue / ace_FixedMaturitiesAndEquitiesAxis = us-gaap_CorporateDebtSecuritiesMember |
2,005us-gaap_HeldToMaturitySecuritiesFairValue / ace_FixedMaturitiesAndEquitiesAxis = us-gaap_CorporateDebtSecuritiesMember |
Held to maturity, OTTI recognized in AOCI |
0us-gaap_AccumulatedOtherComprehensiveIncomeLossOtherThanTemporaryImpairmentNotCreditLossNetOfTaxHeldtomaturityDebtSecurities / ace_FixedMaturitiesAndEquitiesAxis = us-gaap_CorporateDebtSecuritiesMember |
0us-gaap_AccumulatedOtherComprehensiveIncomeLossOtherThanTemporaryImpairmentNotCreditLossNetOfTaxHeldtomaturityDebtSecurities / ace_FixedMaturitiesAndEquitiesAxis = us-gaap_CorporateDebtSecuritiesMember |
Mortgage backed-securities |
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Investment [Line Items] |
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Available for sale, Amortized Cost |
10,011us-gaap_AvailableForSaleSecuritiesAmortizedCost / ace_FixedMaturitiesAndEquitiesAxis = us-gaap_MortgageBackedSecuritiesMember |
10,937us-gaap_AvailableForSaleSecuritiesAmortizedCost / ace_FixedMaturitiesAndEquitiesAxis = us-gaap_MortgageBackedSecuritiesMember |
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax |
304us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax / ace_FixedMaturitiesAndEquitiesAxis = us-gaap_MortgageBackedSecuritiesMember |
184us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax / ace_FixedMaturitiesAndEquitiesAxis = us-gaap_MortgageBackedSecuritiesMember |
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax |
(29)us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax / ace_FixedMaturitiesAndEquitiesAxis = us-gaap_MortgageBackedSecuritiesMember |
(227)us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax / ace_FixedMaturitiesAndEquitiesAxis = us-gaap_MortgageBackedSecuritiesMember |
Available for sale, Fair Value |
10,286us-gaap_AvailableForSaleSecuritiesDebtSecurities / ace_FixedMaturitiesAndEquitiesAxis = us-gaap_MortgageBackedSecuritiesMember |
10,894us-gaap_AvailableForSaleSecuritiesDebtSecurities / ace_FixedMaturitiesAndEquitiesAxis = us-gaap_MortgageBackedSecuritiesMember |
Available for sale, OTTI recognized in AOCI |
(1)us-gaap_AccumulatedOtherComprehensiveIncomeLossOtherThanTemporaryImpairmentNotCreditLossNetOfTaxAvailableforsaleDebtSecurities / ace_FixedMaturitiesAndEquitiesAxis = us-gaap_MortgageBackedSecuritiesMember |
(34)us-gaap_AccumulatedOtherComprehensiveIncomeLossOtherThanTemporaryImpairmentNotCreditLossNetOfTaxAvailableforsaleDebtSecurities / ace_FixedMaturitiesAndEquitiesAxis = us-gaap_MortgageBackedSecuritiesMember |
Held to maturity, Amortized Cost |
1,983us-gaap_HeldToMaturitySecurities / ace_FixedMaturitiesAndEquitiesAxis = us-gaap_MortgageBackedSecuritiesMember |
1,341us-gaap_HeldToMaturitySecurities / ace_FixedMaturitiesAndEquitiesAxis = us-gaap_MortgageBackedSecuritiesMember |
Held-to-maturity Securities, Accumulated Unrecognized Holding Gain |
57us-gaap_HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain / ace_FixedMaturitiesAndEquitiesAxis = us-gaap_MortgageBackedSecuritiesMember |
39us-gaap_HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain / ace_FixedMaturitiesAndEquitiesAxis = us-gaap_MortgageBackedSecuritiesMember |
Held-to-maturity Securities, Accumulated Unrecognized Holding Loss |
(1)us-gaap_HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss / ace_FixedMaturitiesAndEquitiesAxis = us-gaap_MortgageBackedSecuritiesMember |
(1)us-gaap_HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss / ace_FixedMaturitiesAndEquitiesAxis = us-gaap_MortgageBackedSecuritiesMember |
Held to maturity, Fair Value |
2,039us-gaap_HeldToMaturitySecuritiesFairValue / ace_FixedMaturitiesAndEquitiesAxis = us-gaap_MortgageBackedSecuritiesMember |
1,379us-gaap_HeldToMaturitySecuritiesFairValue / ace_FixedMaturitiesAndEquitiesAxis = us-gaap_MortgageBackedSecuritiesMember |
Held to maturity, OTTI recognized in AOCI |
0us-gaap_AccumulatedOtherComprehensiveIncomeLossOtherThanTemporaryImpairmentNotCreditLossNetOfTaxHeldtomaturityDebtSecurities / ace_FixedMaturitiesAndEquitiesAxis = us-gaap_MortgageBackedSecuritiesMember |
0us-gaap_AccumulatedOtherComprehensiveIncomeLossOtherThanTemporaryImpairmentNotCreditLossNetOfTaxHeldtomaturityDebtSecurities / ace_FixedMaturitiesAndEquitiesAxis = us-gaap_MortgageBackedSecuritiesMember |
States, municipalities, and political subdivisions |
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Investment [Line Items] |
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Available for sale, Amortized Cost |
3,474us-gaap_AvailableForSaleSecuritiesAmortizedCost / ace_FixedMaturitiesAndEquitiesAxis = us-gaap_USStatesAndPoliticalSubdivisionsMember |
3,362us-gaap_AvailableForSaleSecuritiesAmortizedCost / ace_FixedMaturitiesAndEquitiesAxis = us-gaap_USStatesAndPoliticalSubdivisionsMember |
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax |
147us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax / ace_FixedMaturitiesAndEquitiesAxis = us-gaap_USStatesAndPoliticalSubdivisionsMember |
65us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax / ace_FixedMaturitiesAndEquitiesAxis = us-gaap_USStatesAndPoliticalSubdivisionsMember |
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax |
(5)us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax / ace_FixedMaturitiesAndEquitiesAxis = us-gaap_USStatesAndPoliticalSubdivisionsMember |
(77)us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax / ace_FixedMaturitiesAndEquitiesAxis = us-gaap_USStatesAndPoliticalSubdivisionsMember |
Available for sale, Fair Value |
3,616us-gaap_AvailableForSaleSecuritiesDebtSecurities / ace_FixedMaturitiesAndEquitiesAxis = us-gaap_USStatesAndPoliticalSubdivisionsMember |
3,350us-gaap_AvailableForSaleSecuritiesDebtSecurities / ace_FixedMaturitiesAndEquitiesAxis = us-gaap_USStatesAndPoliticalSubdivisionsMember |
Available for sale, OTTI recognized in AOCI |
0us-gaap_AccumulatedOtherComprehensiveIncomeLossOtherThanTemporaryImpairmentNotCreditLossNetOfTaxAvailableforsaleDebtSecurities / ace_FixedMaturitiesAndEquitiesAxis = us-gaap_USStatesAndPoliticalSubdivisionsMember |
0us-gaap_AccumulatedOtherComprehensiveIncomeLossOtherThanTemporaryImpairmentNotCreditLossNetOfTaxAvailableforsaleDebtSecurities / ace_FixedMaturitiesAndEquitiesAxis = us-gaap_USStatesAndPoliticalSubdivisionsMember |
Held to maturity, Amortized Cost |
1,277us-gaap_HeldToMaturitySecurities / ace_FixedMaturitiesAndEquitiesAxis = us-gaap_USStatesAndPoliticalSubdivisionsMember |
1,151us-gaap_HeldToMaturitySecurities / ace_FixedMaturitiesAndEquitiesAxis = us-gaap_USStatesAndPoliticalSubdivisionsMember |
Held-to-maturity Securities, Accumulated Unrecognized Holding Gain |
40us-gaap_HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain / ace_FixedMaturitiesAndEquitiesAxis = us-gaap_USStatesAndPoliticalSubdivisionsMember |
16us-gaap_HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain / ace_FixedMaturitiesAndEquitiesAxis = us-gaap_USStatesAndPoliticalSubdivisionsMember |
Held-to-maturity Securities, Accumulated Unrecognized Holding Loss |
(3)us-gaap_HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss / ace_FixedMaturitiesAndEquitiesAxis = us-gaap_USStatesAndPoliticalSubdivisionsMember |
(17)us-gaap_HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss / ace_FixedMaturitiesAndEquitiesAxis = us-gaap_USStatesAndPoliticalSubdivisionsMember |
Held to maturity, Fair Value |
1,314us-gaap_HeldToMaturitySecuritiesFairValue / ace_FixedMaturitiesAndEquitiesAxis = us-gaap_USStatesAndPoliticalSubdivisionsMember |
1,150us-gaap_HeldToMaturitySecuritiesFairValue / ace_FixedMaturitiesAndEquitiesAxis = us-gaap_USStatesAndPoliticalSubdivisionsMember |
Held to maturity, OTTI recognized in AOCI |
$ 0us-gaap_AccumulatedOtherComprehensiveIncomeLossOtherThanTemporaryImpairmentNotCreditLossNetOfTaxHeldtomaturityDebtSecurities / ace_FixedMaturitiesAndEquitiesAxis = us-gaap_USStatesAndPoliticalSubdivisionsMember |
$ 0us-gaap_AccumulatedOtherComprehensiveIncomeLossOtherThanTemporaryImpairmentNotCreditLossNetOfTaxHeldtomaturityDebtSecurities / ace_FixedMaturitiesAndEquitiesAxis = us-gaap_USStatesAndPoliticalSubdivisionsMember |