AOCI Portion Attributable to change of FV of investments with OTTI

No definition available.

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- Definition

Number of fixed maturities in an unrealized loss position.

+ References

No definition available.

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- Definition

Largest single unrealized loss in the fixed maturities.

+ References

No definition available.

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- Definition

Total number of fixed maturities.

+ References

No definition available.

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- Definition

Limited partnerships number.

+ References

No definition available.

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- Definition

Moodys historical mean recovery rate.

+ References

No definition available.

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- Definition

Percentage of mortgage-backed securities represented by investments in US Government Agency bonds.

+ References

No definition available.

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- Definition

Net unrealized appreciation included in other comprehensive income relating to securities upon which a credit impairment was recorded.

+ References

No definition available.

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- Definition

Top range of gross unrealized losses represented by obligations relating to U.S. Treasury and agencies, foreign government, and states, municipalities, and political subdivision.

+ References

No definition available.

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- Definition

Line items represent reporting 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

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 12
-Section 12
-Sentence Column A

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- Definition

Amount before tax of unrealized gain in accumulated other comprehensive income (AOCI) on investments in equity securities classified as available-for-sale.

+ References

No definition available.

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- Definition

Amount before tax of unrealized loss in accumulated other comprehensive income (AOCI) on investments in equity securities classified as available-for-sale.

+ References

No definition available.

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- Definition

This item represents the cost of equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments for other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any.

+ References

No definition available.

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- Definition

Amount of equity securities categorized neither as held-to-maturity nor as trading.

+ References

No definition available.

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- Definition

This item represents the default rate of the underlying assets in the security that were considered as one of the potential factors in reaching a conclusion that the available-for-sale investments are not other-than-temporarily impaired.

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- Definition

Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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- Definition

Amount of loss from impairment of right-of-use asset from operating lease.

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- Definition

The charge against earnings resulting from the write down of long lived assets other than goodwill due to the difference between the carrying value and lower fair value.

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- Definition

Amount of increase (decrease) in the cumulative amount of credit losses recognized in earnings related to debt securities held for which a portion of an other than temporary impairment (OTTI) was recognized in other comprehensive income (loss).

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- Definition

Amount of cash outflow to acquire investments classified as other.

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- Definition

Amount of cash and cash equivalents restricted as to withdrawal or usage. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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- Definition

Investments which are not defined as or included in marketable (debt, equity, or other) securities whose use is restricted in whole or in part, generally by contractual agreements or regulatory requirements. For use in an unclassified balance sheet.

+ References

No definition available.

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Investments (Narrative) (Detail) $ in Millions	3 Months Ended	12 Months Ended
Investments (Narrative) (Detail) $ in Millions	Dec. 31, 2018 USD ($) Security	Dec. 31, 2018 USD ($) Security partnerships	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)
Investment [Line Items]
Available-for-sale Equity Securities, Amortized Cost Basis			$ 737
Net unrealized appreciation (depreciation) included in OCI		$ (4)	(2)
AOCI Portion Attributable to change of FV of investments with OTTI	$ 1	1	7
Portion of gross unrealized loss represented by the United States Treasury and Agency obligations	$ 630	$ 630
Moodys historical mean recovery rate		42.00%
Limited partnerships number \| partnerships		145
Number of fixed maturities in an unrealized loss position \| Security	19,606	19,606
Total number of fixed maturities \| Security	31,054	31,054
Largest single unrealized loss in the fixed maturities	$ 10	$ 10
Restricted assets in fixed maturities and short-term investments	$ 21,000	$ 21,000	$ 23,300
Percentage of mortgage-backed securities represented by investments in US government agency bonds	81.00%	81.00%	83.00%
Restricted assets in cash	$ 93	$ 93	$ 123
Available-for-sale Equity Securities, Accumulated Gross Unrealized Gain, before Tax			212
Available-for-sale Equity Securities, Accumulated Gross Unrealized Loss, before Tax			12
Equity Securities			937
Operating Lease, Impairment Loss		24
Impairment of Fixed Assets		23
Payment to Acquire Other Investments	$ 28
Corporate securities
Investment [Line Items]
Credit losses recognized in net income		$ 25	5	$ 30
Company assumed recovery rate		32.00%
Collateralized Mortgage Backed Securities [Member]
Investment [Line Items]
Credit losses recognized in net income		$ 0	$ 0	$ 1
Junior Subordinated Debt [Member] \| Chubb INA Capital Securities Due 2067 [Member]
Investment [Line Items]
Gain (Loss) on Extinguishment of Debt		$ (36)