Income Taxes (Earnings Before Income Taxes) (Details) (USD $) In Millions, unless otherwise specified	6 Months Ended	12 Months Ended
Dec. 31, 2012	Dec. 31, 2011	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2010
Income Taxes [Abstract]
United States	$ 611	$ 592	$ 1,035	$ 2,035	$ 1,453
Foreign	386	189	730	980	1,132
Earnings Before Income Taxes	$ 997	$ 781	$ 1,765	$ 3,015	$ 2,585

Income (Loss) from Continuing Operations Before Income Taxes.

No definition available.

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- Definition

The portion of earnings or loss from continuing operations before income taxes that is attributable to domestic operations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.4-08.(h)(1)(i))

-URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 08

-Paragraph h

-Subparagraph 1(i)

-Article 4

+ Details

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- Definition

The portion of earnings or loss from continuing operations before income taxes that is attributable to foreign operations, which is defined as Income or Loss generated from operations located outside the entity's country of domicile.

+ References

+ Details

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