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Income Tax (Details 4) (USD $) In Millions, unless otherwise specified	3 Months Ended			6 Months Ended			3 Months Ended	6 Months Ended	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Mar. 31, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010	Dec. 31, 2010	Jun. 30, 2011 Domestic Country [Member]	Jun. 30, 2011 Domestic Country [Member]	Jun. 30, 2011 Foreign Country [Member]	Mar. 31, 2010 Foreign Country [Member]	Jun. 30, 2011 Foreign Country [Member]
Income Tax (Textuals) [Abstract]
Deferred tax assets, valuation allowances relating to net operating losses in certain countries	$ 276			$ 276		$ 263
US statutory federal tax rate	35.00%		35.00%	35.00%	35.00%
Charges, pretax	82	34		116	35		44	68	38		48
Charges, net pretax										$ 35

The tax effect as of the balance sheet date of the amount of excess of tax deductions over gross income in a year which cannot be used on the tax return of the country of domicile in the current year but can be carried forward to reduce taxable income or income taxes payable in a future year, for which there must be sufficient tax-basis income to utilize a portion or all of the carryforward amount to realize the deferred tax asset.

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