|6 Months Ended|
Jun. 30, 2015
|Income Tax Disclosure [Abstract]|
We are subject to U.S. federal, state and international income taxes. We are generally no longer subject to federal, state, or international income tax examinations by tax authorities for years ending prior to December 31, 2009, with few exceptions. Due to the potential for resolution of state and foreign examinations, and the expiration of various statutes of limitations, it is reasonably possible that our gross unrecognized tax benefit balance may change within the next twelve months by a range of $0 to $4.7 million.
Effective Tax Rate. Our effective income tax rate was 29.0% for the three months ended June 30, 2015, down from 37.2% for the same period in 2014. The effective income tax rate was 31.7% for the six months ended June 30, 2015, as compared to 36.1% for the same period in 2014. In 2015, the income tax rates were lower due to state income tax benefits generated from a tax law change enacted during the second quarter of 2015, and a more favorable foreign rate differential compared to 2014. The state law changes resulted in a discrete tax benefit of $8.6 million and a tax rate impact of 5.4% for the second quarter of 2015 and 2.9% for the six months ended June 30, 2015.
The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.
Reference 1: http://www.xbrl.org/2003/role/presentationRef