Estimated amount of loss resulting from an adverse tax position.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (d)(3)
-URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32718-109319

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Amount of unrecognized tax benefits.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 15A
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=65882285&loc=SL6600010-109319

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Unrecognized Tax Benefit
-URI http://asc.fasb.org/extlink&oid=6527854

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The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate.

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Income Tax (Details) - USD ($) $ in Millions	1 Months Ended
Income Tax (Details) - USD ($) $ in Millions	Jul. 31, 2016	Sep. 30, 2016	Dec. 31, 2015
Income Tax Examination [Line Items]
Unrecognized tax benefits		$ 3,200	$ 3,020
Unrecognized tax benefits that would result in tax benefit if realized		$ 2,530
Minimum
Income Tax Examination [Line Items]
Income tax examination, estimate of possible loss	$ 3,000
Maximum
Income Tax Examination [Line Items]
Income tax examination, estimate of possible loss	$ 5,000