Aggregate carrying amount of the estimated litigation liability for known or estimated probable loss from litigation, which may include attorneys' fees and other litigation costs.

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 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.25)

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

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- Definition

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.

+ References

No definition available.

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- Definition

Amount charged against operating income increasing loss contingency liability, after adjustments to reduce previously estimated charges.

+ References

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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- Details

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Contingencies - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
Contingencies - Narrative (Details) - USD ($) $ in Millions	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Loss Contingencies [Line Items]
Provision for legal contingencies	$ 0	$ 100	$ 359	$ 100
Redemption of 2019 Notes [Member]
Loss Contingencies [Line Items]
Estimated Litigation Liability	$ 439		439		$ 100
Redemption of 2019 Notes [Member] \| Minimum [Member]
Loss Contingencies [Line Items]
Provision for legal contingencies			$ 339
Estimated Litigation Liability					$ 100