Income Taxes	3 Months Ended
Mar. 31, 2019
Income Tax Disclosure [Abstract]
Income Taxes	INCOME TAXES For interim periods, accounting standards require that income tax expense be determined by applying the estimated annual effective income tax rate to year-to-date results, unless this method does not result in a reliable estimate of year-to-date income tax expense. Each period, the income tax accrual is adjusted to the latest estimate and the difference from the previously accrued year-to-date balance is adjusted to the current quarter. Changes in profitability estimates in various jurisdictions will impact our quarterly effective income tax rates. For the first three months of 2019, our income tax expense on continuing operations reflects a rate of 21% as compared to 24% in the comparable period of 2018. For the first three months of 2019, our effective rate of 21% is equal to the U.S. statutory rate of 21%, as increases caused by the effects of foreign and state tax rates are offset by several discrete first quarter benefit items, including tax deductions related to stock-based compensation and the favorable resolution of prior period Chilean tax positions. For the first three months of 2018, the primary differences between the U.S. statutory rate of 21% and the effective rate of 24% relates to state income taxes, foreign tax rates and tax deductions related to stock-based compensation.

INCOME TAXES

For interim periods, accounting standards require that income tax expense be determined by applying the estimated annual effective income tax rate to year-to-date results, unless this method does not result in a reliable estimate of year-to-date income tax expense. Each period, the income tax accrual is adjusted to the latest estimate and the difference from the previously accrued year-to-date balance is adjusted to the current quarter. Changes in profitability estimates in various jurisdictions will impact our quarterly effective income tax rates.

For the first three months of 2019, our income tax expense on continuing operations reflects a rate of 21% as compared to 24% in the comparable period of 2018. For the first three months of 2019, our effective rate of 21% is equal to the U.S. statutory rate of 21%, as increases caused by the effects of foreign and state tax rates are offset by several discrete first quarter benefit items, including tax deductions related to stock-based compensation and the favorable resolution of prior period Chilean tax positions. For the first three months of 2018, the primary differences between the U.S. statutory rate of 21% and the effective rate of 24% relates to state income taxes, foreign tax rates and tax deductions related to stock-based compensation.