v2.4.0.6

Consolidated Balance Sheet (Parenthetical) (USD $) In Millions, except Share data, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Consolidated Balance Sheet [Abstract]
Marketable Securities	$ 0	$ 232
Allowance for accounts and notes receivable	12	30	[1]
Accumulated depreciation, depletion and amortization	$ 59,890	$ 65,029	[1]
Common stock, shares authorized	2,500,000,000	2,500,000,000
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares issued	1,757,089,796	1,749,550,587
Treasury stock, shares	543,195,155	463,880,628
[1] **Certain amounts have been restated to reflect a prior period adjustment. See Note 16—Accumulated Other Comprehensive Income, in the Notes to Consolidated Financial Statements.

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The cumulative amount of depreciation, depletion and amortization (related to property, plant and equipment, but not including land) that has been recognized in the income statement.

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