Asset Acquisitions, Dispositions and Other (Detail 1) - Spin-off California Resources Corp - USD ($) shares in Millions, $ in Millions	Nov. 30, 2014	Sep. 30, 2015
Acquisitions, dispositions and other transactions
Percentage of common stock distributed	81.30%
Distribution of restricted cash to pay obligations of spin-off agreements	$ 4,950
Distribution of cash to pay obligations of spin-off agreements	$ 1,150
Shares owned by Occidental		71.5
Period Following Spin-off within which cash will be distributed to satisfy spin off obligations	P18M
Remaining balance of cash distribution included in restricted cash on balance sheet		$ 1,800

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Distribution of cash to pay obligations of spin-off agreements under the terms of a private letter ruling from the Internal Revenue Service (IRS).

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Distribution of restricted cash to pay obligations of spin-off agreements

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Investment recorded as available for sale asset, shares owned.

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Represents the percentage of common stock that is distributed in connection with the planned spin-off.

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Period following spin-off within which cash will be distributed to satisfy spin off obligations.

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Remaining balance of cash distribution included in restricted cash on balance sheet

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