Consolidated Statements Of Shareholders' Equity (USD $) In Millions, unless otherwise specified	Common Stock [Member]	Reinvested Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Noncontrolling Interests [Member]	Total
Balance at Dec. 31, 2012	$ 6,134	$ 13,236	$ (450)	$ 211	$ 19,131
Balance, shares at Dec. 31, 2012	659
Comprehensive income
Net earnings		269		1	270
Other comprehensive income (loss)			(141)	(9)	(150)
Total comprehensive income					120
Cash dividends paid		(125)			(125)
Stock compensation expense	15				15
Noncontrolling interests associated with mandatorily redeemable instruments				(180)	(180)
Other	26	(11)			15
Balance at Mar. 31, 2013	$ 6,175	$ 13,369	$ (591)	$ 23	$ 18,976
Balance, shares at Mar. 31, 2013	659

Noncontrolling interests associated with manditorily redeemable instruments.

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This element represents the amount of recognized equity-based compensation during the period, that is, the amount recognized as expense in the income statement (or as asset if compensation is capitalized). Alternate captions include the words "stock-based compensation".

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The change in equity [net assets] of a business enterprise during a period from transactions and other events and circumstances from non-owner sources which are attributable to the economic entity, including both controlling (parent) and noncontrolling interests. It includes all changes in equity during a period except those resulting from investments by owners and distributions to owners, including any and all transactions which are directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent.

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Equity impact of common stock cash dividends declared by an entity during the period. This element includes paid and unpaid dividends declared during the period.

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Net of tax amount of other comprehensive income (loss) attributable to both parent entity and noncontrolling interest.

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The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.

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Number of shares of stock issued as of the balance sheet date, including shares that had been issued and were previously outstanding but which are now held in the treasury.

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Amount of stockholders' equity (deficit), net of receivables from officers, directors, owners, and affiliates of the entity, attributable to both the parent and noncontrolling interests. Amount excludes temporary equity. Alternate caption for the concept is permanent equity.

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This element represents movements included in the statement of changes in stockholders' equity which are not separately disclosed or provided for elsewhere in the taxonomy.

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