Interim Statement Presentation Policies (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 29, 2018	Dec. 30, 2017
Interim Statement Presentation [Line Items]
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 third fiscal quarter ends on the Saturday closest to September 30. The 2018 and 2017 third quarters ended on September 29, 2018 and September 30, 2017, respectively. All references to years in these notes to condensed consolidated financial statements represent the respective three or nine months ended on such dates, unless otherwise noted
Cost Method Investments	$ 277
Accounting Standards Update 2016-01 [Member]
Interim Statement Presentation [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Description	In January 2016, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2016-01, Financial Instruments - Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities, which was subsequently amended in February 2018 by ASU 2018-03, Technical Corrections and Improvements to Financial Instruments - Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities. This new guidance addresses certain aspects of recognition, measurement, presentation, and disclosure of financial instruments
New Accounting Pronouncement or Change in Accounting Principle, Description of Transition Method	Provisions within the guidance applicable to the Company were required to be applied prospectively.
Accounting Standards Update 2018-15, Early Prospective Adoption [Member]
Interim Statement Presentation [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Description	In August 2018, the FASB issued ASU 2018-15, Intangibles - Goodwill and Other - Internal-Use Software (Subtopic 350-40): Customer's Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That is a Service Contract (a consensus of the FASB Emerging Issues Task Force). Such guidance aligns the requirements for capitalizing implementation costs incurred in a hosting arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software. ASU 2018-15 is effective for the Company in the first quarter of 2020, with early adoption permitted, and either prospective or retrospective application accepted. The Company adopted the standard early, in the third quarter of 2018, and elected prospective application. The adoption of such guidance did not have a material impact on our condensed consolidated financial statements and related disclosures.
Accounting Standards Update 2016-02 [Member]
Interim Statement Presentation [Line Items]
Description of New Accounting Pronouncements Not yet Adopted [Text Block]	In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842), which introduces a new model that requires most leases to be reported on the balance sheet and aligns many of the underlying principles of the new lessor model with those in the new revenue recognition standard. The standard requires the use of the modified retrospective (cumulative effect) transition approach. ASU 2016-02 is effective for the Company in the first quarter of 2019, with early adoption permitted. We are currently evaluating the effect that ASU 2016-02 will have on our consolidated financial statements and related disclosures, and we do not expect to early adopt.
Operating Leases, Future Minimum Payments Due		$ 124
Accounting Standards Update 2018-11 [Member]
Interim Statement Presentation [Line Items]
Description of New Accounting Pronouncements Not yet Adopted [Text Block]	In July 2018, the FASB issued ASU 2018-11, Leases (Topic 842): Targeted Improvements, which includes new transition guidance for the adoption of ASU 2016-02. Such guidance creates an additional transition method allowing entities to use the effective date of ASU 2016-02 as the date of initial application on transition. Under this method, entities will not be required to recast comparative periods when transitioning to the new guidance. Entities will also not be required to present comparative period disclosures under the new guidance in the period of adoption. We expect to select this new transition method upon our adoption in the first quarter of 2019
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 have not determined if we will early adopt.
Accounting Standards Update 2017-08 [Member]
Interim Statement Presentation [Line Items]
Description of New Accounting Pronouncements Not yet Adopted [Text Block]	In March 2017, the FASB issued 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 will impact how premiums are amortized on our available-for-sale investments. ASU 2017-08 is effective for the Company in the first quarter of 2019, with early adoption permitted. The standard requires the use of the modified retrospective (cumulative effect) transition approach. We do not expect ASU 2017-08 to have a material impact on our consolidated financial statements and related disclosures, and we do not expect to early adopt
Accounting Standards Update 2018-02 [Member]
Interim Statement Presentation [Line Items]
Description of New Accounting Pronouncements Not yet Adopted [Text Block]	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. ASU 2018-02 is effective for the Company in the first quarter of 2019, with early adoption permitted. The guidance in this ASU is to be applied either in the period of adoption or retrospectively to each period (or periods) in which the effect of the change in the U.S. corporate tax rate was recognized. We are currently evaluating the effect that ASU 2018-02 will have on our consolidated financial statements and related disclosures, and we do not expect to early adopt
SEC Final Rule Release No. 33-10532 [Member]
Interim Statement Presentation [Line Items]
Description of New Accounting Pronouncements Not yet Adopted [Text Block]	In August 2018, the Securities and Exchange Commission ("SEC") issued SEC 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 expect to satisfy this new disclosure requirement in future Form 10-Q filings by presenting a separate condensed consolidated statement of shareholders' equity