Income Taxes	6 Months Ended
Income Taxes	Jun. 30, 2020
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes Our effective tax rate was (42.3)% and (0.9)% for the three and six months ended June 30, 2020, respectively. The effective tax rate during these periods reflects a $64 million increase in deferred tax assets which decreased the effective tax rate by (55.2)% and (16.5)% during the three and six months ended June 30, 2020, respectively. Based on the analysis of final guidance related to the Tax Cuts and Jobs Act (the “Tax Act”) received during these periods, a deferred tax asset was recorded. The effective tax rate during these periods also reflects the mix of income from multiple tax jurisdictions and the impact of internal financing arrangements. Our effective tax rate was 27.4% and 23.4% for the three and six months ended June 30, 2019, respectively. The effective tax rate during these periods reflects a $37 million increase in the provision for unrecognized tax benefits related to a prior restructuring transaction that is not applicable to ongoing operations which increased the effective tax rate by 10.4% and 5.6% during the three and six months ended June 30, 2019, respectively. The effective tax rate during these periods also reflects the mix of income from multiple tax jurisdictions, the impact of internal financing arrangements and stock option exercises. Benefits from stock option exercises reduced the effective tax rate by 4.0% and 4.1% for the three and six months ended June 30, 2019, respectively.

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.