Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

No definition available.

+ Details

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- References

No definition available.

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- References

No definition available.

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- Definition

Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 2
-Subparagraph (b)
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-Publisher FASB
-Name Accounting Standards Codification
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-Section 45
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-Publisher FASB
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-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

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- References

No definition available.

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- Definition

Amount of impairment loss resulting from write-down of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit to fair value.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 3
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16373-109275

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- Definition

Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-Section 45
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- References

No definition available.

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Major Accounting Policies - Goodwill and Intangible Assets (Details 3) - USD ($) $ in Millions		3 Months Ended	12 Months Ended
	Dec. 31, 2015	Mar. 31, 2015	Dec. 31, 2015	Dec. 31, 2014
Goodwill impairment
Goodwill impaired		$ 0
Intangible assets
Carrying value of intangible assets	$ 24		$ 24	$ 23
Indefinite-lived intangible asset impairment
Intangible assets with indefinite lives impaired	$ 0
Minimum
Finite-lived intangible assets
Useful lives of intangible assets with finite lives			1 year
Maximum
Finite-lived intangible assets
Useful lives of intangible assets with finite lives			10 years