Income Taxes (Tables)

3 Months Ended

Mar. 31, 2015

Income Tax Disclosure [Abstract]

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

A reconciliation of the federal statutory income tax rate to the effective income tax rate applicable to income before income tax expense is as follows:

	Three-Month Periods
	Ended March 31,
	2015		2014
Federal statutory income tax rate	35	%	35	%
Income tax credits	(11	)	(15	)
State income tax, net of federal income tax benefit	2		1
Income tax effect of foreign income	(4	)	(3	)
Equity income	2		1
Other, net	(2	)	—
Effective income tax rate	22	%	19	%