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Prepaid Expenses (Details) (USD $) In Millions, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Prepaid Expenses [Abstract]
Prepaid drilling costs	$ 2	$ 9
Prepaid insurance	2	8
Prepaid taxes	12	14
Total	$ 16	$ 31

- Definition

Amount of asset related to consideration paid in advance for insurance that provides economic benefits within a future period of one year or the normal operating cycle, if longer.

+ References+ Details

- Definition

Amount of asset related to consideration paid in advance for income and other taxes that provide economic benefits within a future period of one year or the normal operating cycle, if longer.

+ References+ Details