Income Taxes	6 Months Ended
Income Taxes	Jun. 30, 2021
Income Tax Disclosure [Abstract]
Income Taxes	8. Income Taxes A. Taxes on Income Our effective tax rate was 19.7% for the three months ended June 30, 2021, compared with 22.0% for the three months ended June 30, 2020. The lower effective tax rate for the three months ended June 30, 2021, was primarily attributable to: •changes in the jurisdictional mix of earnings, which includes the impact of the location of earnings from operations and repatriation costs. The jurisdictional mix of earnings can vary as a result of repatriation decisions, operating fluctuations in the normal course of business and the impact of non-deductible items and non-taxable items; and •a $4 million and a $1 million discrete tax benefit recorded in the three months ended June 30, 2021 and 2020, respectively, related to the excess tax benefits for share-based payments. Our effective tax rate was 19.2% for the six months ended June 30, 2021, compared with 18.4% for the six months ended June 30, 2020. The higher effective tax rate for the six months ended June 30, 2021, was primarily attributable to: •a $17 million and a $24 million discrete tax benefit recorded in the six months ended June 30, 2021 and 2020, respectively, related to the excess tax benefits for share-based payments; and •a $7 million discrete tax benefit recorded in the six months ended June 30, 2020 related to a remeasurement of deferred taxes resulting from the integration of acquired businesses, partially offset by: •changes in the jurisdictional mix of earnings, which includes the impact of the location of earnings from operations and repatriation costs. The jurisdictional mix of earnings can vary as a result of repatriation decisions, operating fluctuations in the normal course of business and the impact of non-deductible items and non-taxable items. B. Deferred Taxes As of June 30, 2021, the total net deferred income tax liability of $278 million is included in Noncurrent deferred tax assets ($103 million) and Noncurrent deferred tax liabilities ($381 million). As of December 31, 2020, the total net deferred income tax liability of $284 million is included in Noncurrent deferred tax assets ($94 million) and Noncurrent deferred tax liabilities ($378 million). C. Tax Contingencies As of June 30, 2021, the net tax liabilities associated with uncertain tax positions of $194 million (exclusive of interest and penalties related to uncertain tax positions of $16 million) are included in Noncurrent deferred tax assets and Other noncurrent assets ($2 million) and Other taxes payable ($192 million). As of December 31, 2020, the net tax liabilities associated with uncertain tax positions of $188 million (exclusive of interest and penalties related to uncertain tax positions of $14 million) are included in Noncurrent deferred tax assets and Other noncurrent assets ($1 million) and Other taxes payable ($187 million). Our tax liabilities for uncertain tax positions relate primarily to issues common among multinational corporations. Any settlements or statute of limitations expirations could result in a significant decrease in our uncertain tax positions. Substantially all of these unrecognized tax benefits, if recognized, would impact our effective income tax rate. We do not expect that within the next twelve months any of our uncertain tax positions could significantly decrease as a result of settlements with taxing authorities or the expiration of the statutes of limitations. Our assessments are based on estimates and assumptions that have been deemed reasonable by management, but our estimates of uncertain tax positions and potential tax benefits may not be representative of actual outcomes, and any variation from such estimates could materially affect our financial statements in the period of settlement or when the statutes of limitations expire, as we treat these events as discrete items in the period of resolution. Finalizing audits with the relevant taxing authorities can include formal administrative and legal proceedings, and, as a result, it is difficult to estimate the timing and range of possible changes related to our uncertain tax positions, and such changes could be significant.

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.