Percentage points added to the reference rate to compute the variable rate on the debt instrument.

No definition available.

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- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 30
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+ Details

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Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
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- 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.

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- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-SubTopic 210
-Section S99
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-Subparagraph (SX 210.7-03(a)(16))
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- Definition

Amount, after the effects of master netting arrangements, of funds outstanding borrowed in the form of a security repurchase agreement between the entity and another party for the sale and repurchase of identical or substantially the same securities at a date certain for a specified price. Includes liabilities not subject to a master netting arrangement and not elected to be offset.

+ References

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- Details

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Debt (Details) - USD ($) $ in Millions	9 Months Ended
Debt (Details) - USD ($) $ in Millions	Sep. 30, 2016	Jan. 14, 2016	Dec. 31, 2015
Debt Instrument [Line Items]
Long-term debt	$ 12,621		$ 9,389
Repurchase agreements	1,406		1,404
The Chubb Corporation [Member]
Debt Instrument [Line Items]
Long-term debt		$ 3,765
Debt Instrument, Face Amount		$ 3,300
Chubb INA $1,000 million 6.375% capital securities due March 2067(1)
Debt Instrument [Line Items]
Debt Instrument, Face Amount	1,000
Junior Subordinated Debt [Member] \| Chubb INA $1,000 million 6.375% capital securities due March 2067(1)
Debt Instrument [Line Items]
Long-term debt	961		$ 0
Debt Instrument, Face Amount	$ 1,000
Interest Rate	6.375%
London Interbank Offered Rate (LIBOR) [Member] \| Junior Subordinated Debt [Member] \| Chubb INA $1,000 million 6.375% capital securities due March 2067(1)
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate	2.25%