This table lists the investments. The line items identify information about all investments.

No definition available.

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- Definition

Difference between amount at which an investment accounted for under the equity method of accounting is carried (reported) on the balance sheet and amount of underlying equity in net assets the reporting Entity has in the investee.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 323
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (a)(3)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481687/323-10-50-3

+ Details

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- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 323
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481687/323-10-50-3

+ Details

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- Definition

Amount of investment in equity method investee and investment in and advance to affiliate.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(18))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

+ Details

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- Details

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- Details

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- Details

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- Details

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- Details

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- Details

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Investments (Schedule Of Investments In Partially-Owned Insurance Companies) (Details) - USD ($) $ in Millions	Dec. 31, 2023	Jun. 30, 2023	Dec. 31, 2022
Investment [Line Items]
Carrying Value	$ 191		$ 2,877
Equity Method Investment, Difference Between Carrying Amount and Underlying Equity	$ 3		$ 1,315
Huatai Group [Member]
Investment [Line Items]
Ownership Percentage		64.20%
CHINA \| Huatai Group [Member]
Investment [Line Items]
Ownership Percentage	0.00%		47.00%
CHINA \| Huatai Life Insurance Co. [Member]
Investment [Line Items]
Ownership Percentage	0.00%		20.00%
Bermuda \| Freisenbruch-Meyer
Investment [Line Items]
Ownership Percentage	40.00%		40.00%
Bermuda \| ABR Reinsurance Capital Holdings Ltd. [Member]
Investment [Line Items]
Ownership Percentage	19.00%		19.00%
Saudi Arabia \| Chubb Arabia Cooperative Insurance Company [Member]
Investment [Line Items]
Ownership Percentage	30.00%		30.00%
Huatai Group [Member] \| CHINA
Investment [Line Items]
Carrying Value	$ 0		$ 2,490
Equity Method Investment, Difference Between Carrying Amount and Underlying Equity	0		1,247
Huatai Life Insurance Co. [Member] \| CHINA
Investment [Line Items]
Carrying Value	0		215
Equity Method Investment, Difference Between Carrying Amount and Underlying Equity	0		65
Freisenbruch-Meyer \| Bermuda
Investment [Line Items]
Carrying Value	12		11
Equity Method Investment, Difference Between Carrying Amount and Underlying Equity	3		3
Chubb Arabia Cooperative Insurance Company [Member] \| Saudi Arabia
Investment [Line Items]
Carrying Value	28		24
Equity Method Investment, Difference Between Carrying Amount and Underlying Equity	0		0
ABR Reinsurance Capital Holdings Ltd. [Member] \| Bermuda
Investment [Line Items]
Carrying Value	151		137
Equity Method Investment, Difference Between Carrying Amount and Underlying Equity	$ 0		$ 0
ABR Reinsurance Capital Holdings Ltd. [Member] \| Bermuda \| ABR Reinsurance Capital Holdings Ltd. [Member]
Investment [Line Items]
Ownership Percentage	18.70%