Asset Acquisitions, Dispositions and Other (Detail) (Spin-off California Resources Corp, USD $) In Billions, except Share data in Millions, unless otherwise specified	0 Months Ended
Nov. 30, 2014	Mar. 31, 2015	Nov. 30, 2014
Spin-off California Resources Corp
Acquisitions, dispositions and other transactions
Percentage of common stock distributed	81.30%		81.30%
Distribution of restricted cash to pay obligations of spin-off agreements	$ 4.95
Distribution of cash to pay obligations of spin-off agreements	1.15
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		$ 3.30

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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).

No definition available.

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

No definition available.

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Investment recorded as available for sale asset, shares owned.

No definition available.

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

No definition available.

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

No definition available.

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

No definition available.

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