Consolidated Statements of Financial Position (Unaudited) (Parenthetical) (USD $) In Millions, except Share data	Jun. 30, 2011	Dec. 31, 2010
Current Assets
Allowance for doubtful accounts	$ 83	$ 93
Equity
Common stock, shares authorized	400,000	400,000
Common stock, shares issued	138,632,324	138,632,234
Common stock, shares outstanding	138,632,324	138,632,234
Common stock, par value	$ 10.00	$ 10.00

A valuation allowance for trade and other receivables due to an Entity within one year (or the normal operating cycle, whichever is longer) that are expected to be uncollectible.

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Face amount or stated value of common stock per share; generally not indicative of the fair market value per share.

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