Supplemental Balance Sheet Information (Details Textual) (USD $) In Millions, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Supplemental Balance Sheet Information [Abstract]
Accrued interest	$ 47	$ 48
Gain on sale of surplus property	12
Assets held for sale	$ 5

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Current assets (normally turning over within one year or one business cycle if longer) that are held for sale apart from normal operations and anticipated to be sold within one year.

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Amount of interest payable on debt, including, but not limited to, trade payables.

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The difference between the value of the consideration received by the Entity on the sale or disposal and net book value of assets sold or disposed, before any tax related impact.

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