Fair Value Measurement (Narrative) (Details) - USD ($) |
3 Months Ended | |
|---|---|---|
Dec. 31, 2021 |
Dec. 31, 2020 |
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| Fair Value Measurement [Abstract] | ||
| Obligations to return cash collateral | $ 0 | $ 10,000,000 |
| Rights to reclaim cash collateral | 36,000,000 | 4,000,000 |
| Schedule of Equity Method Investments [Line Items] | ||
| Equity Method Investments | $ 6,701,000,000 | $ 7,596,000,000 |
| APLNG [Member] | ||
| Schedule of Equity Method Investments [Line Items] | ||
| Equity Method Investment, Ownership Percentage | 10.00% | |
| Equity Method Investments | $ 1,645,000,000 | |
| Fair Value - Equity Method Investments | 5,574,000,000 | |
| Before-Tax Loss - Equity method investments | $ 688,000,000 |
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- Definition Amount of obligation to return cash collateral under master netting arrangements that have not been offset against derivative assets. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of right to receive cash collateral under master netting arrangements that have not been offset against derivative liabilities. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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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. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- References No definition available.
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- Definition The aggregate amount of write-downs for impairments recognized during the period for long lived assets held for use (including those held for disposal by means other than sale). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Fair value portion of investments in an entity not consolidated. Includes, but is not limited to, investments in an entity that is affiliated with the reporting entity by means of direct or indirect ownership, an entity in which the reporting entity shares control of the entity with another party or group, an entity which the company has significant influence, but does not have control and subsidiaries that are not required to be consolidated and are accounted for using the equity or cost method. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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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. No definition available.
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- Details
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