Restructuring and Related Implementation Charges (Details 4) (Two Thousand Twelve Restructuring Program [Member], USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Restructuring Reserve [Roll Forward]
Beginning Balance	$ 158us-gaap_RestructuringReserve	$ 89us-gaap_RestructuringReserve	$ 0us-gaap_RestructuringReserve
Charges	286	371	89
Cash Payments	(212)us-gaap_PaymentsForRestructuring	(169)us-gaap_PaymentsForRestructuring	(5)us-gaap_PaymentsForRestructuring
Charges against assets	(31)	(44)	0
Foreign exchange	(9)	2	5
Other	0us-gaap_DefinedBenefitPlanCurtailments	(91)us-gaap_DefinedBenefitPlanCurtailments
Ending Balance	192us-gaap_RestructuringReserve	158us-gaap_RestructuringReserve	89us-gaap_RestructuringReserve
One-time Termination Benefits [Member]
Restructuring Reserve [Roll Forward]
Beginning Balance	116	84	0
Charges	73	144	78
Cash Payments	(95)	(97)	(1)
Charges against assets	(5)	(17)	0
Foreign exchange	(4)	2	7
Other	0	0
Ending Balance	85	116	84
Incremental Depreciation [Member]
Restructuring Reserve [Roll Forward]
Beginning Balance	0	0	0
Charges	25	26	0
Cash Payments	0	0	0
Charges against assets	(25)	(26)	0
Foreign exchange	0	0	0
Other	0	0
Ending Balance	0	0	0
Asset Impairment [Member]
Restructuring Reserve [Roll Forward]
Beginning Balance	0	0	0
Charges	1	1	0
Cash Payments	0	0	0
Charges against assets	(1)	(1)	0
Foreign exchange	0	0	0
Other	0	0
Ending Balance	0	0	0
Other Restructuring [Member]
Restructuring Reserve [Roll Forward]
Beginning Balance	42	5	0
Charges	187	200	11
Cash Payments	(117)	(72)	(4)
Charges against assets	0	0	0
Foreign exchange	(5)	0	(2)
Other	0	(91)
Ending Balance	107	42	5
Third party Incremental Cost [Member]
Restructuring Reserve [Roll Forward]
Charges	65	50	8
Contract Termination [Member]
Restructuring Reserve [Roll Forward]
Charges	40	34	3
Land and Building [Member]
Restructuring Reserve [Roll Forward]
Charges	$ 82	$ 25

Restructuring Reserve, Charges Against Assets

No definition available.

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- Definition

The amount of decrease that is related to an event that significantly reduces the expected years of future service of present employees or eliminates for a significant number of employees the accrual of defined benefits for some or all of their future services.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (a)(10)

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Plan Curtailment

-URI http://asc.fasb.org/extlink&oid=6520938

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 30

-Section 15

-Paragraph 6

-Subparagraph (a)(2)

-URI http://asc.fasb.org/extlink&oid=7577095&loc=d3e8001-114927

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- Definition

Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with a discontinued operation or an asset retirement obligation.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

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- Definition

Discloses the amount charged against the accrued restructuring reserves, or earnings if not previously accrued, during the period for the specified type of restructuring cost.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 420

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869

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-Name Accounting Standards Codification

-Topic 420

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SAB TOPIC 5.P.4(b))

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-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 5

-Section P

-Subsection 3, 4

+ Details

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- Definition

Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 420

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SAB TOPIC 5.P.4(b))

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-Name Staff Accounting Bulletin (SAB)

-Number Topic 5

-Section P

-Subsection 3, 4

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- Definition

Amount of foreign currency translation adjustment increasing or decreasing the accrual for a specified type of restructuring cost.

+ References

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

-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 5

-Section P

-Subsection 3, 4

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 420

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SAB TOPIC 5.P.4(b)(2))

-URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747

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-Topic 420

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (b)(2)

-URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869

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