Income Taxes	3 Months Ended
Income Taxes	Mar. 31, 2021
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes We compute our provision for income taxes by applying the estimated annual effective tax rate to year-to-date income from recurring operations and adjust the provision for discrete tax items recorded in the period. Our income tax provision was $17 million for the three months ended March 31, 2021. The income tax provision was primarily attributable to the mix of earnings and losses in countries with differing statutory tax rates and the valuation allowance in the United States. Our income tax provision was not material for the three months ended March 31, 2020, as our foreign taxes were entirely offset by release of valuation allowance resulting from an acquisition and excess tax benefits of stock-based compensation. Governments in certain countries where we do business have enacted legislation in response to the COVID-19 pandemic, including the Coronavirus Aid, Relief, and Economic Security Act (the “CARES Act”) enacted by the United States on March 27, 2020. We are continuing to analyze these legislative developments and believe that they have not had a material impact on our provision for income taxes for the three months ended March 31, 2021. We are subject to taxation in the United States and foreign jurisdictions. As of March 31, 2021, our tax years 2004 to 2020 remain subject to examination in most jurisdictions. Due to differing interpretations of tax laws and regulations, tax authorities may dispute our tax filings positions. We periodically evaluate our exposures associated with our tax filing positions and believe that adequate amounts have been reserved for adjustments that may result from tax examinations.

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.