Income Taxes	6 Months Ended
Income Taxes	Jun. 30, 2020
Income Tax Disclosure [Abstract]
Income Taxes	NOTE 3 — INCOME TAXES Our provision for income taxes for the quarters ended June 30, 2020 and 2019 was $344 million and $271 million, respectively, and the effective tax rates were 24.2% and 25.7%, respectively. Our provision for income taxes for the six months ended June 30, 2020 and 2019 was $456 million and $550 million, respectively, and the effective tax rates were 21.6% and 23.2%, respectively. Our provision for income taxes included tax benefits related to the settlement of employee equity awards of $54 million and $53 million for the six months ended June 30, 2020 and 2019, respectively. Our liability for unrecognized tax benefits was $513 million, including accrued interest of $71 million, as of June 30, 2020 ($550 million and $62 million, respectively, as of December 31, 2019). Unrecognized tax benefits of $164 million ($160 million as of December 31, 2019) would affect the effective rate, if recognized. The Internal Revenue Service was conducting an examination of the Company’s 2016, 2017 and 2018 federal income tax returns at June 30, 2020. We are also subject to examination by state and foreign taxing authorities. Depending on the resolution of any federal, state and foreign tax disputes, the completion of examinations by federal, state or foreign taxing authorities, or the expiration of statutes of limitation for specific taxing jurisdictions, we believe it is reasonably possible that our liability for unrecognized tax benefits may significantly increase or decrease within the next 12 months. However, we are currently unable to estimate the range of any possible change.

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.