Income Taxes	3 Months Ended
Mar. 31, 2019
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes We have determined that because small changes in estimated ordinary annual income would result in significant changes in the estimated annual effective tax rate, the use of a discrete effective tax rate is appropriate for determining the quarterly provision for income taxes. The discrete method treats the year-to-date period as if it was the annual period and determines the income tax expense or benefit on that basis. We will continue to use this method each quarter until the annual effective tax rate method is deemed appropriate. In the first quarter of 2019, we had a tax expense of $12 million on a loss before income taxes of $465 million compared to the first quarter of 2018 tax expense of $32 million on a loss before income taxes of $210 million. Our results for the first quarter of 2019 include an $8 million tax benefit principally related to the $229 million goodwill impairment. The other asset write-downs and other charges, including $49 million in asset write-downs and other charges and $20 million in restructuring charges resulted in no significant tax benefit. The tax expense for the first quarter of 2019 and 2018 also includes withholding taxes, minimum taxes and deemed profit taxes that do not directly correlate to ordinary income or loss. We are routinely under tax examination in various jurisdictions. We cannot predict the timing or outcome regarding resolution of these tax examinations or if they will have a material impact on our financial statements. We continue to anticipate a possible reduction in the balance of uncertain tax positions of approximately $16 million in the next twelve months due to expiration of statutes of limitations, settlements and/or conclusions of tax examinations.

Income Taxes

We have determined that because small changes in estimated ordinary annual income would result in significant changes in the estimated annual effective tax rate, the use of a discrete effective tax rate is appropriate for determining the quarterly provision for income taxes. The discrete method treats the year-to-date period as if it was the annual period and determines the income tax expense or benefit on that basis. We will continue to use this method each quarter until the annual effective tax rate method is deemed appropriate. In the first quarter of 2019, we had a tax expense of $12 million on a loss before income taxes of $465 million compared to the first quarter of 2018 tax expense of $32 million on a loss before income taxes of $210 million. Our results for the first quarter of 2019 include an $8 million tax benefit principally related to the $229 million goodwill impairment. The other asset write-downs and other charges, including $49 million in asset write-downs and other charges and $20 million in restructuring charges resulted in no significant tax benefit. The tax expense for the first quarter of 2019 and 2018 also includes withholding taxes, minimum taxes and deemed profit taxes that do not directly correlate to ordinary income or loss.

We are routinely under tax examination in various jurisdictions. We cannot predict the timing or outcome regarding resolution of these tax examinations or if they will have a material impact on our financial statements. We continue to anticipate a possible reduction in the balance of uncertain tax positions of approximately $16 million in the next twelve months due to expiration of statutes of limitations, settlements and/or conclusions of tax examinations.