Income Taxes	6 Months Ended
Income Taxes	Jun. 30, 2020
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes Historically, we have calculated the provision for income taxes during interim reporting periods by applying an estimate of the annual effective tax rate for the full year to income (loss) for the interim period. In the second quarter of 2020, we concluded that we could not calculate a reliable estimate of our annual effective tax rate due to the range of potential impacts the global COVID-19 pandemic may have on our business and results of operations. Accordingly, we computed the effective tax rate for the six-month period ending June 30, 2020, using actual results. Our effective income tax rate for the three and six months ended June 30, 2020, was 85% and 15%, respectively, compared with 18% for the corresponding periods of 2019. The increase in our effective tax rate for the three months ended June 30, 2020, is primarily attributable to the adjustment required in the second quarter for the first-quarter 2020 results to reflect the change in methodology discussed above. The decrease in our effective tax rate for the six months ended June 30, 2020, is primarily attributable to the impact of the nondeductible goodwill impairment, partially offset by the ability provided under the Coronavirus Aid, Relief, and Economic Security Act (CARES Act) to carry back a 2020 net operating loss to a year with a 35% income tax rate, as well as foreign operations and income attributable to noncontrolling interests. The effective income tax rate for the three months ended June 30, 2020, varied from the U.S. federal statutory income tax rate of 21%, primarily attributable to the adjustment required in the second quarter for the first-quarter 2020 results to reflect the change in methodology discussed above. The effective income tax rate for the six months ended June 30, 2020, varied from the U.S. federal statutory rate of 21%, primarily due to the impact of the nondeductible goodwill impairment, partially offset by the ability provided under the CARES Act to carry back a 2020 net operating loss to a year with a 35% income tax rate. An income tax receivable of $557 million is included in the “Accounts and notes receivable” line item on our consolidated balance sheet as of June 30, 2020, which reflects our estimate of the tax benefit that we expect to realize within the next 12 months

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.