Income Taxes	6 Months Ended
Jun. 29, 2018
Income Tax Disclosure [Abstract]
Income Taxes	. Income Taxes The Company and its subsidiaries file income tax returns in the U.S. Federal jurisdiction, which is the Company’s primary tax jurisdiction, and various state and foreign jurisdictions. At June 29, 2018, the statutes of limitations for the Company’s U.S. Federal income tax returns for the years ended December 31, 2012 through 2016 were open. The U.S. Internal Revenue Service (IRS) is auditing the Company’s U.S. Federal income tax returns for the years ended 2012 and 2013. The Company expects the audits to conclude within the next 12 months. The Company cannot predict the outcome of the audits at this time. The U.S. Government enacted U.S. Tax Reform on December 22, 2017, which made significant changes to the U.S. tax system. Significant changes under U.S. Tax Reform included, among other things, the reduction of the U.S. corporate income tax rate from 35% to 21%, the implementation of a modified territorial tax system and the imposition of a one-time repatriation tax on deemed repatriated earnings and profits of U.S. owned foreign subsidiaries (Toll Charge). As a result, the Company recorded an estimated tax benefit (Preliminary Net Tax Benefit) from U.S. Tax Reform in its consolidated financial statements for the year ended December 31, 2017. The Company did not record any change to the Preliminary Net Tax Benefit on the unaudited condensed consolidated financial statements for the quarterly and first half periods ended June 29, 2018. The Preliminary Net Tax Benefit ultimately recorded may differ in the future due principally to changes to the interpretations of U.S. Tax Reform, legislative action to clarify the interpretation of U.S. Tax Reform and changes to estimates the Company has utilized to calculate the tax benefit. The Company expects to finalize the tax benefit from U.S. Tax Reform with the filing of its tax return and at that time will record the difference between the final benefit and the Preliminary Net Tax Benefit previously recorded, if any, in accordance with the Securities and Exchange Commission Staff Accounting Bulletin No. 118, Income Tax Accounting Implications of the Tax Cuts and Jobs Act. Additionally, the Company is still evaluating the Global Intangible Low-Taxed Income (GILTI) provisions enacted under U.S. Tax Reform, and the associated election to record its effects as a period cost or as a component of deferred taxes. The effective income tax rate for the quarterly period ended June 29, 2018 was 20.3%. Excluding the sale of the Crestview & TCS Businesses, the debt retirement charge and the related income tax impacts of each, the effective income tax rate would have decreased to 15.6% from 23.2% for the quarterly period ended June 30, 2017. The decrease was primarily driven by an increase in tax benefits from equity compensation and the reduction of the U.S. corporate income tax rate enacted under U.S. Tax Reform. The effective income tax rate for the first half period ended June 29, 2018 was 15.9%. Excluding the sale of the Crestview & TCS Businesses, the debt retirement charge and the related income tax impacts of each, the effective income tax rate would have decreased to 13.5% from 22.3% for the same period last year. The decrease was primarily driven by trends similar to the quarterly period ended June 29, 2018. At June 29, 2018, the Company anticipates that unrecognized tax benefits will decrease by approximately $44 million over the next 12 months due to the potential resolution of unrecognized tax benefits involving several jurisdictions and tax periods. The actual amount of the decrease over the next 12 months could vary significantly depending on the ultimate timing and nature of any settlements. Current and non-current income taxes payable include accrued potential interest of $17 million ($13 million after income taxes) at June 29, 2018 and $15 million ($11 million after income taxes) at December 31, 2017, and potential penalties of $9 million at June 29, 2018 and $8 million at December 31, 2017.

. Income Taxes

The Company and its subsidiaries file income tax returns in the U.S. Federal jurisdiction, which is the Company’s primary tax jurisdiction, and various state and foreign jurisdictions. At June 29, 2018, the statutes of limitations for the Company’s U.S. Federal income tax returns for the years ended December 31, 2012 through 2016 were open. The U.S. Internal Revenue Service (IRS) is auditing the Company’s U.S. Federal income tax returns for the years ended 2012 and 2013. The Company expects the audits to conclude within the next 12 months. The Company cannot predict the outcome of the audits at this time.

The U.S. Government enacted U.S. Tax Reform on December 22, 2017, which made significant changes to the U.S. tax system. Significant changes under U.S. Tax Reform included, among other things, the reduction of the U.S. corporate income tax rate from 35% to 21%, the implementation of a modified territorial tax system and the imposition of a one-time repatriation tax on deemed repatriated earnings and profits of U.S. owned foreign subsidiaries (Toll Charge). As a result, the Company recorded an estimated tax benefit (Preliminary Net Tax Benefit) from U.S. Tax Reform in its consolidated financial statements for the year ended December 31, 2017. The Company did not record any change to the Preliminary Net Tax Benefit on the unaudited condensed consolidated financial statements for the quarterly and first half periods ended June 29, 2018. The Preliminary Net Tax Benefit ultimately recorded may differ in the future due principally to changes to the interpretations of U.S. Tax Reform, legislative action to clarify the interpretation of U.S. Tax Reform and changes to estimates the Company has utilized to calculate the tax benefit. The Company expects to finalize the tax benefit from U.S. Tax Reform with the filing of its tax return and at that time will record the difference between the final benefit and the Preliminary Net Tax Benefit previously recorded, if any, in accordance with the Securities and Exchange Commission Staff Accounting Bulletin No. 118, Income Tax Accounting Implications of the Tax Cuts and Jobs Act. Additionally, the Company is still evaluating the Global Intangible Low-Taxed Income (GILTI) provisions enacted under U.S. Tax Reform, and the associated election to record its effects as a period cost or as a component of deferred taxes.

The effective income tax rate for the quarterly period ended June 29, 2018 was 20.3%. Excluding the sale of the Crestview & TCS Businesses, the debt retirement charge and the related income tax impacts of each, the effective income tax rate would have decreased to 15.6% from 23.2% for the quarterly period ended June 30, 2017. The decrease was primarily driven by an increase in tax benefits from equity compensation and the reduction of the U.S. corporate income tax rate enacted under U.S. Tax Reform.

The effective income tax rate for the first half period ended June 29, 2018 was 15.9%. Excluding the sale of the Crestview & TCS Businesses, the debt retirement charge and the related income tax impacts of each, the effective income tax rate would have decreased to 13.5% from 22.3% for the same period last year. The decrease was primarily driven by trends similar to the quarterly period ended June 29, 2018.

At June 29, 2018, the Company anticipates that unrecognized tax benefits will decrease by approximately $44 million over the next 12 months due to the potential resolution of unrecognized tax benefits involving several jurisdictions and tax periods. The actual amount of the decrease over the next 12 months could vary significantly depending on the ultimate timing and nature of any settlements.

Current and non-current income taxes payable include accrued potential interest of $17 million ($13 million after income taxes) at June 29, 2018 and $15 million ($11 million after income taxes) at December 31, 2017, and potential penalties of $9 million at June 29, 2018 and $8 million at December 31, 2017.