Interim Statement Presentation Policies (Details)	3 Months Ended
	Mar. 30, 2019
Interim Statement Presentation [Line Items]
Subsequent Event, Description	The irrevocable acceptance period for associates electing to participate in the 2019 VSP ended in early April 2019. We expect the resulting pre-tax charge in the second quarter of 2019 to approximate $41 million.
Basis of Accounting, Policy [Policy Text Block]	The condensed consolidated financial statements were prepared using GAAP
Use of Estimates, Policy [Policy Text Block]	These principles require us to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities and the reported amounts of revenues and expenses
Fiscal Period, Policy [Policy Text Block]	Our first fiscal quarter ends on the Saturday closest to March 31. The 2019 and 2018 first quarters ended on March 30, 2019 and March 31, 2018, respectively. All references to years in these notes to condensed consolidated financial statements represent the respective three months ended on such dates, unless otherwise noted
Accounting Standards Update 2016-13 [Member]
Interim Statement Presentation [Line Items]
Description of New Accounting Pronouncements Not yet Adopted [Text Block]	In June 2016, the FASB issued ASU 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments, which provides new guidance regarding the measurement and recognition of credit impairment for certain financial assets. Such guidance will impact how we determine our allowance for estimated uncollectible receivables and evaluate our available-for-sale investments for impairment. ASU 2016-13 is effective for the Company in the first quarter of 2020, with early adoption permitted in the first quarter of 2019. We are currently evaluating the effect that ASU 2016-13 will have on our consolidated financial statements and related disclosures, and we did not early adopt
Accounting Standards Update 2017-08 [Member]
Interim Statement Presentation [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Description	In March 2017, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2017-08, Receivables - Nonrefundable Fees and Other Costs (Subtopic 310-20): Premium Amortization on Purchased Callable Debt Securities, which shortens the amortization period for certain investments in callable debt securities purchased at a premium by requiring the premium be amortized to the earliest call date. Such guidance would impact how premiums are amortized on our available-for-sale investments. We adopted ASU 2017-08 in the first quarter of 2019. Such guidance did not have an impact on our condensed consolidated financial statements and related disclosures
Accounting Standards Update 2018-02 [Member]
Interim Statement Presentation [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Description	In February 2018, the FASB issued ASU 2018-02, Income Statement - Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income, which allows a reclassification from accumulated other comprehensive income ("AOCI") to retained earnings for "stranded tax effects" resulting from certain U.S. tax reform enacted in December 2017. Such "stranded tax effects" were created when deferred tax assets and liabilities related to items in AOCI were remeasured at the lower U.S. corporate tax rate in the period of enactment. We adopted ASU 2018-02 in the first quarter of 2019, and did not elect to reclassify "stranded tax effects" from AOCI to retained earnings
SEC Final Rule Release No. 33-10532 [Member]
Interim Statement Presentation [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Description	In August 2018, the SEC issued Final Rule Release No. 33-10532, Disclosure Update and Simplification. Such guidance, among other things, extends to interim periods the annual requirement in SEC Regulation S-X, Rule 3-04 to disclose changes in shareholders' equity. Under the requirements in SEC Regulation S-X, Rules 8-03(a)(5) and 10-01(a)(7), as amended by this new guidance, registrants must now analyze changes in shareholders' equity, in the form of a reconciliation, for the current and comparative year-to-date interim periods, with subtotals for each interim period. This guidance is effective for filings submitted on or after November 5, 2018. We have presented a separate condensed consolidated statement of changes in shareholders' equity in this Form 10-Q in order to satisfy this new disclosure requirement
Accounting Standards Update 2018-18 [Member]
Interim Statement Presentation [Line Items]
Description of New Accounting Pronouncements Not yet Adopted [Text Block]	In November 2018, the FASB issued ASU 2018-18, Collaborative Arrangements (Topic 808): Clarifying the Interaction between Topic 808 and Topic 606, which clarifies when transactions between participants in a collaborative arrangement are within the scope of the FASB's new revenue standard (Topic 606). Such guidance clarifies revenue recognition and financial statement presentation for transactions between collaboration participants. ASU 2018-18 is effective for the Company in the first quarter of 2020, with early adoption permitted. The standard requires retrospective application to the date we adopted Topic 606, December 31, 2017. We are currently evaluating the effect that ASU 2018-18 will have on our consolidated financial statements and related disclosures, and we do not expect to early adopt
2019 VSP [Member]
Interim Statement Presentation [Line Items]
Description of Postemployment Benefits	Associates who elected to participate in the 2019 VSP received financial benefits commensurate with their tenure and position, along with vacation payout, medical benefits, and accelerated vesting of certain share-based payment awards.