Income Taxes	3 Months Ended
Mar. 31, 2018
Income Tax Disclosure [Abstract]
Income Taxes	INCOME TAXES Income taxes payable included in Other Current Liabilities totaled $29.1 million at March 31, 2018, and $81.1 million at December 31, 2017. We file income tax returns in the U.S. federal jurisdiction and various states. As a matter of course, various taxing authorities, including the IRS, regularly audit us. Currently, no tax years are under examination by the IRS, and tax years from 2009 to 2016 are under examination by certain U.S. state jurisdictions. These audits may result in proposed assessments where the ultimate resolution may result in our owing additional taxes. It is our policy to account for interest and penalties associated with income tax obligations as a component of Income Tax Provision in the accompanying Unaudited Condensed Consolidated Financial Statements. Tax Reform On December 22, 2017, H.R.1 formerly known as the “Tax Cuts and Jobs Act,” was enacted into law. This new tax legislation, among other things, reduced the U.S. federal corporate tax rate from 35% to 21% effective January 1, 2018. We have not completed our accounting for the tax effects of enactment of the Act; however, we made a reasonable estimate of the effects on our existing deferred tax balances as of December 31, 2017. As of March 31, 2018, we are still analyzing certain aspects of the new legislation and refining our calculations, which could potentially affect the measurement of these balances or potentially give rise to new deferred tax amounts. In addition, our estimates may also be affected as we gain a more thorough understanding of the tax law and whether states will conform to changes in the law. For the quarter ended March 31, 2018, we have recorded no adjustments to income tax expense related to our provisional estimate recorded as of December 31, 2017. The provisional amounts will be subject to adjustment during a measurement period of up to one year from the date of enactment.

INCOME TAXES

Income taxes payable included in Other Current Liabilities totaled $29.1 million at March 31, 2018, and $81.1 million at December 31, 2017.

We file income tax returns in the U.S. federal jurisdiction and various states. As a matter of course, various taxing authorities, including the IRS, regularly audit us. Currently, no tax years are under examination by the IRS, and tax years from 2009 to 2016 are under examination by certain U.S. state jurisdictions. These audits may result in proposed assessments where the ultimate resolution may result in our owing additional taxes.

It is our policy to account for interest and penalties associated with income tax obligations as a component of Income Tax Provision in the accompanying Unaudited Condensed Consolidated Financial Statements.

Tax Reform

On December 22, 2017, H.R.1 formerly known as the “Tax Cuts and Jobs Act,” was enacted into law. This new tax legislation, among other things, reduced the U.S. federal corporate tax rate from 35% to 21% effective January 1, 2018. We have not completed our accounting for the tax effects of enactment of the Act; however, we made a reasonable estimate of the effects on our existing deferred tax balances as of December 31, 2017.

As of March 31, 2018, we are still analyzing certain aspects of the new legislation and refining our calculations, which could potentially affect the measurement of these balances or potentially give rise to new deferred tax amounts. In addition, our estimates may also be affected as we gain a more thorough understanding of the tax law and whether states will conform to changes in the law. For the quarter ended March 31, 2018, we have recorded no adjustments to income tax expense related to our provisional estimate recorded as of December 31, 2017. The provisional amounts will be subject to adjustment during a measurement period of up to one year from the date of enactment.