Income Taxes (Details Textual) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Income Taxes (Textual) [Abstract]
Deferred tax liability for US subsidiaries	$ 45	$ 42
Income Taxes (Additional Textual) [Abstract]
Valuation allowance recorded against deferred tax assets	302	323
Operating loss carryforwards expiration year, minimum	2026
Operating loss carryforwards expiration year, maximum	2031
Other non-US net operating losses expiry term	between three years and indefinitely
Increase in equity in case of ultimate realization of deferred tax assets	8
Provision for withholding tax not recorded	1,144
Additional provision for withholding tax not recorded	51
Unremitted earnings not considered permanent	34
US federal statutory rate	35.00%
Unrecognized tax benefits	23	25	57	57
Interest and penalties accrued related to unrecognized tax benefits	1		1
Total interest and penalties included in the ending balance of unrecognized tax benefits	4	5
US Subsidiaries [Member]
Income Taxes (Textual) [Abstract]
Deferred tax liability for US subsidiaries	1
Federal [Member]
Income Taxes (Textual) [Abstract]
Net operating loss carry forwards	202
Other non-US [Member]
Income Taxes (Textual) [Abstract]
Net operating loss carry forwards	$ 400