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Income Taxes (Tables)

6 Months Ended

Jun. 30, 2016

Income Tax Disclosure [Abstract]

Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]

Income tax expense included in our accompanying consolidated statements of income were as follows (in millions, except percentages): 

	Three Months Ended June 30,								Six Months Ended June 30,
	2016				2015				2016				2015
Income tax expense	$	213			$	189			$	367			$	413
Effective tax rate	36.2		%		35.6		%		34.8		%		35.2		%

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- References

No definition available.

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- Definition

Tabular disclosure of the reconciliation using percentage or dollar amounts of the reported amount of income tax expense attributable to continuing operations for the year to the amount of income tax expense that would result from applying domestic federal statutory tax rates to pretax income from 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 12
-URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32687-109319

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