Other Financial Data - Investments (Details) - USD ($) $ in Millions	3 Months Ended
Apr. 01, 2017	Apr. 02, 2016	Dec. 31, 2016
Net Investment Income [Line Items]
Cash Surrender Value of Life Insurance	$ 136		$ 135
Available-for-sale securities:
Investments	55		56
Other investments	213		211
Equity method investments	14		17
Investments	282		284
Less: current portion of available-for-sale securities	45		46
Long-term investments noncurrent	237		238
Gains (losses) on sales of investments and businesses, net	3	$ (21)
Government, agency, and government-sponsored enterprise obligations
Available-for-sale securities:
Investments	50		51
Corporate bonds
Available-for-sale securities:
Investments	5		5
United Kingdom Treasury Securities
Available-for-sale securities:
Gross realized gain (loss) on securities		$ (19)
Technology-drivent Startup Companies
Available-for-sale securities:
Other investments	$ 77		$ 76

The net gain or loss from the sale of investments in debt and equity securities and businesses.

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Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

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Amount of investment in debt and equity securities categorized neither as trading securities nor held-to-maturity securities and intended be sold or mature one year or operating cycle, if longer.

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This item represents the difference between the gross realized gains and losses realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities. Additionally, this item would include any losses recognized for other than temporary impairments (OTTI) of the subject investments in debt and equity securities.

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Carrying amount as of the balance sheet date of amounts which could be received based on the terms of the insurance contract upon surrendering life policies owned by the entity.

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Amount, after adjustment, of cost-method investment. Adjustments include, but are not limited to, dividends received in excess of earnings after date of investment that are considered a return of investment and other than temporary impairments.

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This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

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Sum of the carrying amounts as of the balance sheet date of all investments.

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The total amount of investments that are intended to be held for an extended period of time (longer than one operating cycle).

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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