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Income Taxes | 3 Months Ended
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Mar. 31, 2018
Income Tax Disclosure [Abstract] |
Income Taxes | Income Taxes. On December 22, 2017, The Tax Cuts and Jobs Act (the "Tax Legislation") was enacted in the United States, significantly revising certain U.S. corporate income tax provisions; including, among other items, a reduction of the U.S. corporate rate from 35% to 21%; the imposition of a deemed repatriation tax on unremitted foreign earnings to facilitate a shift from a worldwide tax system to a territorial system; and the creation of new limitations on certain deductions. We do not currently anticipate significant revisions to the amounts recorded. However, under the guidance of Staff Accounting Bulletin No. 118 issued on December 22, 2017, we will account for the income tax effects of any additional guidance associated with the Tax Legislation under the measurement period approach. For the three months ended March 31, 2018, we recorded an income tax expense of $56 million on pre-tax income of $479 million compared to an income tax expense of $26 million on pre-tax loss of $134 million for the three months ended March 31, 2017. Our effective income tax rate was 11.7% and (19.4)% for the three months ended March 31, 2018 and 2017, respectively. For the three months ended March 31, 2018, the effective tax rate was lower than the statutory federal rate of 21%, primarily due to partnership income for which there was no tax expense, as such income is allocated to the partners. For the three months ended March 31, 2017, the effective tax rate was lower than the statutory federal rate of 35%, primarily due to partnership losses for which there was no tax benefit, as such losses are allocated to the partners, and goodwill impairment not deductible for tax purposes.

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- Definition 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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -URI http://asc.fasb.org/topic&trid=2144680 + Details
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