Income Taxes	6 Months Ended
Jun. 30, 2017
Income Tax Disclosure [Abstract]
Income Taxes	14. Income Taxes The effective tax rate was 31.2 percent and 33.2 percent for the three months ended June 30, 2017 and 2016, respectively, and 31.6 percent and 33.8 percent for the six months ended June 30, 2017 and 2016, respectively. The changes in tax rates primarily reflected the geographic mix of business and the level of pretax income in relation to recurring permanent tax benefits. In addition, the effective tax rate in the current year reflected the resolution of certain prior years’ tax items. The Company is under continuous examination by the Internal Revenue Service (IRS) and tax authorities in other countries and states in which the Company has significant business operations. The tax years under examination and open for examination vary by jurisdiction. In February 2017, the Company received notification that all matters outstanding with the IRS for tax years 1997-2007 were resolved. The resolution of such matters did not have a material impact on the Company’s effective tax rate. The Company is currently under examination with the IRS for tax years 2008 through 2014. The Company believes it is reasonably possible that its unrecognized tax benefits could decrease within the next 12 months by as much as $133 million, principally as a result of potential resolutions of prior years’ tax items with various taxing authorities. The prior years’ tax items include unrecognized tax benefits relating to the deductibility of certain expenses or losses and the attribution of taxable income to a particular jurisdiction or jurisdictions. Of the $133 million of unrecognized tax benefits, approximately $90 million relates to amounts that, if recognized, would impact the effective tax rate in a future period. During the six months ended June 30, 2017, the Company’s unrecognized tax benefits decreased by $280 million. The decrease was primarily due to the resolution with the IRS of an uncertain tax position in January 2017, which resulted in the recognition of $289 million in shareholders’ equity, specifically within AOCI.

Income Taxes

6 Months Ended

Jun. 30, 2017

14. Income Taxes

The effective tax rate was 31.2 percent and 33.2 percent for the three months ended June 30, 2017 and 2016, respectively, and 31.6 percent and 33.8 percent for the six months ended June 30, 2017 and 2016, respectively. The changes in tax rates primarily reflected the geographic mix of business and the level of pretax income in relation to recurring permanent tax benefits. In addition, the effective tax rate in the current year reflected the resolution of certain prior years’ tax items.

The Company is under continuous examination by the Internal Revenue Service (IRS) and tax authorities in other countries and states in which the Company has significant business operations. The tax years under examination and open for examination vary by jurisdiction. In February 2017, the Company received notification that all matters outstanding with the IRS for tax years 1997-2007 were resolved. The resolution of such matters did not have a material impact on the Company’s effective tax rate. The Company is currently under examination with the IRS for tax years 2008 through 2014.

The Company believes it is reasonably possible that its unrecognized tax benefits could decrease within the next 12 months by as much as $133 million, principally as a result of potential resolutions of prior years’ tax items with various taxing authorities. The prior years’ tax items include unrecognized tax benefits relating to the deductibility of certain expenses or losses and the attribution of taxable income to a particular jurisdiction or jurisdictions. Of the $133 million of unrecognized tax benefits, approximately $90 million relates to amounts that, if recognized, would impact the effective tax rate in a future period. During the six months ended June 30, 2017, the Company’s unrecognized tax benefits decreased by $280 million. The decrease was primarily due to the resolution with the IRS of an uncertain tax position in January 2017, which resulted in the recognition of $289 million in shareholders’ equity, specifically within AOCI.