Shareowners' Equity and Noncontrolling Interest Shareowners' Equity and Noncontrolling Interest (Changes to Redeemable Noncontrolling Interest) (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Redeemable noncontrolling interest, beginning of period	$ 134	$ 146	$ 140	$ 111
Net income	3	0	7	7
Foreign currency translation	(4)	(5)	(13)	(5)
Dividends attributable to noncontrolling interest	113	145	229	245
Purchase of subsidiary shares from noncontrolling interest	(1)	18	(22)	33
Redeemable noncontrolling interest fair value adjustment	0	0	3	0
Redeemable noncontrolling interest reclassification to noncontrolling interest	0	0	0	31
Redeemable noncontrolling interest, end of period	132	141	132	141
Redeemable Noncontrolling Interest [Member]
Dividends attributable to noncontrolling interest	0	0	3	3
Purchase of subsidiary shares from noncontrolling interest	$ 1	$ 0	$ 2	$ 0

Decrease in noncontrolling interest balance from payment of dividends or other distributions by the non-wholly owned subsidiary or partially owned entity, included in the consolidation of the parent entity, to the noncontrolling interest holders.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.3-04)

-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

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- Definition

The difference between the carrying amount of a financial instrument subject to a registration payment arrangement recorded as temporary equity prior to adoption of FSP EITF 00-19-2 and the carrying amount reclassified to permanent equity upon the adoption of FSP EITF 00-19-2. Recorded as a cumulative effect adjustment to the beginning balance of retained earnings. Does not apply to registration payment arrangements that are no longer outstanding upon adoption of FSP EITF 00-19-2.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 480

-SubTopic 10

-Section S99

-Paragraph 3A

-URI http://asc.fasb.org/extlink&oid=27011957&loc=SL6540498-122764

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 40

-Section 50

-Paragraph 3

-URI http://asc.fasb.org/extlink&oid=6445032&loc=d3e90193-114008

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- Definition

Value of accretion of temporary equity to its redemption value during the period.

+ References

No definition available.

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- Definition

Carrying amount, attributable to parent and noncontrolling interests, of an entity's issued and outstanding stock which is not included within permanent equity. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. Includes stock with a put option held by an ESOP and stock redeemable by a holder only in the event of a change in control of the issuer.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.27(b))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

Adjustments to temporary equity resulting from foreign currency translation adjustments.

+ References

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- Definition

The portion of net income or loss attributable to temporary equity interest.

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- Definition

Decrease/ Increase related to (Purchase) / sale of subsidiary shares from noncontrolling interest

+ References

No definition available.

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