Investment owned percent of common shares outstanding.

No definition available.

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- Definition

Percentage of acquired common shares outstanding.

+ References

No definition available.

+ Details

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- Definition

Liquidation value of preferred shares.

+ References

No definition available.

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- Definition

Percentage price of liquidation value at which a preferred stock investment can be redeemed by the issuer.

+ References

No definition available.

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- Definition

Preferred stock investment redemption year start.

+ References

No definition available.

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- Definition

Exercise price per share or per unit of warrants or rights outstanding.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 3
-URI https://asc.fasb.org/extlink&oid=126973232&loc=d3e21475-112644

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- Definition

Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares.

+ References

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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://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-URI https://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571

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- Definition

Balance held at close of period in number of shares.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 946
-SubTopic 210
-Section 50
-Paragraph 6
-Subparagraph (c)
-URI https://asc.fasb.org/extlink&oid=99383244&loc=d3e12121-115841

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 946
-SubTopic 320
-Section S99
-Paragraph 3
-Subparagraph (SX 210.12-12B(Column B))
-URI https://asc.fasb.org/extlink&oid=122147990&loc=d3e611197-123010

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- Definition

The percentage rate used to calculate dividend payments on preferred stock.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 13
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=126973232&loc=SL123496158-112644

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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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Investments in equity securities - Narrative (Detail) - USD ($) $ / shares in Units, $ in Billions	6 Months Ended	9 Months Ended
	Jun. 30, 2022	Sep. 30, 2022	Aug. 04, 2022
American Express Company [Member]
Summary of Investment Holdings [Line Items]
Investment owned, common shares outstanding		151,600,000
Investment owned, percent of common shares outstanding		20.30%
Occidental Petroleum Corporation [Member]
Summary of Investment Holdings [Line Items]
Percentage of acquired common stock outstanding	17.00%
Occidental Petroleum Corporation [Member] \| Investment Commitment [Member]
Summary of Investment Holdings [Line Items]
Number of common shares that can be purchased		83,860,000
Exercise price for warrants, per share		$ 59.62
Occidental Petroleum Corporation [Member] \| Cumulative Perpetual Preferred Stock [Member] \| Investment Commitment [Member]
Summary of Investment Holdings [Line Items]
Investment in preferred stock, liquidation value		$ 10
Investment in preferred stock, stated dividend rate		8.00%
Investment in preferred stock, redemption year start		2029
Investment in preferred stock, redemption price percentage of liquidation preference		105.00%
Occidental Petroleum Corporation [Member] \| Occidental Common Stock [Member] \| Minimum [Member]
Summary of Investment Holdings [Line Items]
Equity method investment ownership percentage			20.00%