Condensed Consolidated Statements Of Equity (Parenthetical) (USD $) In Millions, except Per Share data, unless otherwise specified	9 Months Ended
Sep. 30, 2012	Sep. 30, 2011
Statement of Stockholders' Equity [Abstract]
Unrealized gain on derivative instruments, tax	$ (14)	$ 23
Unrealized loss on certain investments, tax	0	2
Reclassification adjustment for gains realized in net earnings, tax	(5)	1
Postretirement liability adjustment, tax	$ (679)	$ (398)
Common Stock, Dividends, Per Share, Declared	$ 0.88	$ 0.84

Tax effect of the income statement impact of the reclassification adjustment of accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges realized in net income. Also includes reclassification adjustments of an entity's share of an equity investee's deferred hedging gain (loss) realized in net income.

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Tax effect of the change in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges. Also includes an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).

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- Definition

Tax effect of unrealized holding gain (loss) before reclassification adjustments and transfers on available-for-sale securities.

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