Excise Tax Rate Effective July One Two Thousand Thirteen through Two Thousand Seventeen

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- Definition

Excise tax rate.

+ References

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- Definition

Income taxes.

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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 13

-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32698-109319

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

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-Subparagraph (SX 210.4-08.(h)(2))

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-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

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Amount of decrease in unrecognized tax benefits resulting from settlements with taxing authorities.

+ 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)(3)

-URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319

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- Definition

Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return.

+ 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)(2)

-URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319

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Income taxes (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
Income taxes (Details) - USD ($) $ in Millions	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Income taxes (Textual) [Abstract]
Effective income tax rate	15.00%	7.00%	15.30%	10.10%
Increase in gross amount of unrecognized tax benefits for period	$ 125		$ 335
State and Local Jurisdiction [Member]
Income taxes (Textual) [Abstract]
Decrease in unrecognized tax benefits resulting from settlements with taxing authorities			$ 70
Puerto Rico Excise Tax [Member]
Puerto Rico Excise Tax Rate [Line Items]
Excise tax rate effective July 1, 2013 through 2017			4.00%