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

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

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Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

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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.

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Debt (Details) - USD ($) $ in Millions	Mar. 31, 2016	Jan. 14, 2016	Dec. 31, 2015
Debt Instrument [Line Items]
Long-term debt	$ 12,636		$ 9,389
Repurchase Agreements	1,403		$ 1,404
The Chubb Corporation [Member]
Debt Instrument [Line Items]
Long-term debt		$ 3,760
Face amount of debt		$ 3,300
Chubb INA Senior Notes Due 2067 [Member]
Debt Instrument [Line Items]
Face amount of debt	$ 1,000
Junior Subordinated Debt [Member] \| Chubb INA Senior Notes Due 2067 [Member]
Debt Instrument [Line Items]
Interest Rate	6.375%
Junior Subordinated Debt [Member] \| Chubb INA Capital Securities Due 2067 [Member]
Debt Instrument [Line Items]
Long-term debt	$ 948
Interest Rate	6.375%