OTHER	6 Months Ended
Jun. 24, 2018
Accounting Policies [Abstract]
OTHER	OTHER Equity Method Investee Impairment During the quarter ended March 26, 2017, equity earnings included a charge recorded of approximately $64 million ($40 million, or $0.14 per share, after tax), which represented our portion of a non-cash asset impairment related to certain long-lived assets held by our equity method investee, AMMROC. As of June 24, 2018, our equity method investment in AMMROC totaled approximately $560 million. We are continuing to monitor this investment in light of ongoing performance, business base and economic issues and we may have to record our portion of additional charges, or an impairment of our investment, or both, should the carrying value of our investment exceed its fair value. These charges could adversely affect our financial condition and results of operations. Severance and Restructuring Charges During the quarter ended June 24, 2018, we recorded charges totaling $96 million ($76 million, or $0.26 per share, after tax) related to certain severance and restructuring actions at our RMS business segment. These charges consist of $75 million of severance costs for the planned elimination of certain positions through either voluntary or involuntary actions and $21 million of asset impairment charges associated with our decision to consolidate certain operations. Upon separation, terminated employees will receive lump-sum severance payments primarily based on years of service, a majority of which we expect to pay by the end of 2018. These actions resulted from a strategic review of our RMS business segment and are intended to improve the efficiency of our operations and better align our organization and cost structure with changing economic conditions. We expect to recover a portion of the severance and restructuring charges through the pricing of our products and services to the U.S. Government and other customers in future periods, which will be included in RMS’ operating results. Income Taxes Our effective income tax rates were 18.1% and 16.5% for the quarter and six months ended June 24, 2018, and 28.8% and 26.6% for the quarter and six months ended June 25, 2017. The lower rate for the quarter and six months ended June 24, 2018 is primarily due to the reduction of the federal statutory rate from 35% to 21% as a result of the Tax Act enacted in December 2017. The rates for both periods benefited from tax deductions for dividends paid to our defined contribution plans with an employee stock ownership plan feature, tax deductions for employee equity awards, and the research and development tax credit. The rate for the quarter and six months ended June 24, 2018 also benefited from the Tax Act’s deduction for foreign derived intangible income. The rate for the quarter and six months ended June 25, 2017 benefited from tax deductions for U.S. manufacturing activities, which the Tax Act repealed for years after 2017. While we have substantially completed our provisional analysis of the income tax effects of the Tax Act as of December 31, 2017 and recorded a reasonable estimate in 2017 of such effects, actual effects may differ, possibly materially, due to, among other things, further refinement of our calculations, changes in interpretations and assumptions that we have made, additional guidance that may be issued by the U.S. Government, and actions and related accounting policy decisions we may take as a result of the Tax Act. We will complete our analysis of the impact of the Tax Act for 2017 over a one-year measurement period ending December 22, 2018, and any adjustments during this measurement period will be included in net earnings as an adjustment to income tax expense in the reporting period when such adjustments are determined. We have not identified any material change to the net one-time charge for the period ending December 31, 2017 related to the Tax Act.

OTHER

Equity Method Investee Impairment

During the quarter ended March 26, 2017, equity earnings included a charge recorded of approximately $64 million ($40 million, or $0.14 per share, after tax), which represented our portion of a non-cash asset impairment related to certain long-lived assets held by our equity method investee, AMMROC. As of June 24, 2018, our equity method investment in AMMROC totaled approximately $560 million. We are continuing to monitor this investment in light of ongoing performance, business base and economic issues and we may have to record our portion of additional charges, or an impairment of our investment, or both, should the carrying value of our investment exceed its fair value. These charges could adversely affect our financial condition and results of operations.

Severance and Restructuring Charges

During the quarter ended June 24, 2018, we recorded charges totaling $96 million ($76 million, or $0.26 per share, after tax) related to certain severance and restructuring actions at our RMS business segment. These charges consist of $75 million of severance costs for the planned elimination of certain positions through either voluntary or involuntary actions and $21 million of asset impairment charges associated with our decision to consolidate certain operations. Upon separation, terminated employees will receive lump-sum severance payments primarily based on years of service, a majority of which we expect to pay by the end of 2018. These actions resulted from a strategic review of our RMS business segment and are intended to improve the efficiency of our operations and better align our organization and cost structure with changing economic conditions. We expect to recover a portion of the severance and restructuring charges through the pricing of our products and services to the U.S. Government and other customers in future periods, which will be included in RMS’ operating results.

Income Taxes

Our effective income tax rates were 18.1% and 16.5% for the quarter and six months ended June 24, 2018, and 28.8% and 26.6% for the quarter and six months ended June 25, 2017. The lower rate for the quarter and six months ended June 24, 2018 is primarily due to the reduction of the federal statutory rate from 35% to 21% as a result of the Tax Act enacted in December 2017. The rates for both periods benefited from tax deductions for dividends paid to our defined contribution plans with an employee stock ownership plan feature, tax deductions for employee equity awards, and the research and development tax credit. The rate for the quarter and six months ended June 24, 2018 also benefited from the Tax Act’s deduction for foreign derived intangible income. The rate for the quarter and six months ended June 25, 2017 benefited from tax deductions for U.S. manufacturing activities, which the Tax Act repealed for years after 2017.

While we have substantially completed our provisional analysis of the income tax effects of the Tax Act as of December 31, 2017 and recorded a reasonable estimate in 2017 of such effects, actual effects may differ, possibly materially, due to, among other things, further refinement of our calculations, changes in interpretations and assumptions that we have made, additional guidance that may be issued by the U.S. Government, and actions and related accounting policy decisions we may take as a result of the Tax Act. We will complete our analysis of the impact of the Tax Act for 2017 over a one-year measurement period ending December 22, 2018, and any adjustments during this measurement period will be included in net earnings as an adjustment to income tax expense in the reporting period when such adjustments are determined. We have not identified any material change to the net one-time charge for the period ending December 31, 2017 related to the Tax Act.