Income Taxes	6 Months Ended
Jun. 30, 2018
Income Taxes [Abstract]
Income Taxes	Income Taxes Our effective tax rate for the six months ended June 30, 2018, decreased period-over-period to 25.2% from 30.8%. The decrease was primarily attributable to the reduction of the U.S. federal statutory income tax rate to 21% from 35% resulting from the Tax Cuts and Jobs Act, or Tax Act, which was enacted in December 2017. In addition, income tax expense in the six months of 2018 was reduced by approximately $25 million, primarily as a result of the successful resolution of foreign tax claims and a reduction of the expected incremental U.S. income tax applied against our overall foreign earnings. At June 30, 2018, our unrecognized tax benefits were $166.3 million. Of this amount, approximately $149.0 million would affect our effective tax rate upon resolution of the uncertain tax positions.

Income Taxes

6 Months Ended

Jun. 30, 2018

Our effective tax rate for the six months ended June 30, 2018, decreased period-over-period to 25.2% from 30.8%. The decrease was primarily attributable to the reduction of the U.S. federal statutory income tax rate to 21% from 35% resulting from the Tax Cuts and Jobs Act, or Tax Act, which was enacted in December 2017. In addition, income tax expense in the six months of 2018 was reduced by approximately $25 million, primarily as a result of the successful resolution of foreign tax claims and a reduction of the expected incremental U.S. income tax applied against our overall foreign earnings.

At June 30, 2018, our unrecognized tax benefits were $166.3 million. Of this amount, approximately $149.0 million would affect our effective tax rate upon resolution of the uncertain tax positions.