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CONSOLIDATED CONDENSED BALANCE SHEETS (Parenthetical) (USD $) In Millions, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
CONSOLIDATED CONDENSED BALANCE SHEETS
PROPERTY, PLANT AND EQUIPMENT, accumulated depreciation, depletion and amortization	$ 29,266	$ 28,032

- Definition

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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