Income Taxes (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
Sep. 30, 2013	Mar. 31, 2013	Jun. 30, 2014	Feb. 28, 2010
Income Taxes
Disputed IRS statutory notice amount				$ 892
Tax adjustment recognized	235	281
Significant change in unrecognized tax benefits is reasonably possible estimated range of change within the next 12 months, lower bound			$ (770)

Represents the total amount paid for taxes, penalties and interest related to the disallowance of foreign tax credits and other deductions claimed by a deconsolidated subsidiary in connection with a financing transaction by the IRS.

No definition available.

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- Definition

The estimated lower bound of the reasonably possible change in the total amount of the unrecognized tax benefit (that will significantly increase or decrease within twelve months of the balance sheet date) for a tax position taken.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 15

-Subparagraph (d)

-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32718-109319

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- Definition

The net amount of all increases and decreases in unrecognized tax benefits for the period.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 15A

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319

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