Commitments and Contingent Liabilities Commitments and Contingent Liabilities (Environmental) (Narrative) (Details) $ in Millions	9 Months Ended
Sep. 30, 2015 USD ($) yr
Environmental Remediation [Line Items]
Accrual for environmental remediation activities	$ 505
Potential environmental liability in excess of accrued amount	$ 1,100
Minimum [Member]
Environmental Remediation [Line Items]
Average time frame of disbursements of environmental site remediation \| yr	15
Maximum [Member]
Environmental Remediation [Line Items]
Average time frame of disbursements of environmental site remediation \| yr	20
Chemours [Member]
Environmental Remediation [Line Items]
Accrual for environmental remediation activities	$ 299
Potential environmental liability in excess of accrued amount	630
Indemnification assets	$ 299

Average time frame of disbursements of environmental site remediation

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Indemnification asset for liabilities indemnified by Chemours against certain litigation, environmental, workers' compensation and other liabilities that arose prior to the spin-off of Chemours.

+ References

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Potential environmental liability in excess of accrued amount

+ References

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Total costs accrued as of the balance sheet date for environmental loss contingencies.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 450

-SubTopic 20

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14326-108349

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 410

-SubTopic 30

-Section 50

-Paragraph 7

-URI http://asc.fasb.org/extlink&oid=6393242&loc=d3e13207-110859

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 450

-SubTopic 20

-Section 25

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-URI http://asc.fasb.org/extlink&oid=6395460&loc=d3e13647-108346

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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