Spin-off of California Resources Corporation (Details) (Spin-off California Resources Corp, USD $) In Millions, unless otherwise specified	1 Months Ended
	Nov. 30, 2014	Dec. 31, 2014
Spin-off California Resources Corp
Acquistions, dispositions and other transactions
Percentage of common stock distributed	81.30%
Common Stock Conversion Ratio	0.4
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
Senior Notes issued	5,000
Borrowings under term loan facility	1,000
Borrowings under revolving credit facility	2,000
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		$ 4,000
Period for the provision of specified transition services	24 months