Employee Equity Incentive Plans (Detail) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
Dec. 30, 2017	Dec. 31, 2016	Dec. 26, 2015
Share-based Compensation Arrangement by Share-based Payment Award, Additional General Disclosures [Abstract]
Market-Based Restricted Stock Units Performance Period (In Years)	3 years
Share-based Compensation	$ 1,358	$ 1,444	$ 1,305
Tax Benefit from Compensation Expense	$ 520	616	533
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Additional General Disclosures [Abstract]
Award Requisite Service Period	4 years
RSUs Vested in Period, Total Fair Value	$ 1,600	1,600	1,500
RSUs Aggregate Intrinsic Value, Vested	1,100	$ 1,300	$ 1,100
Compensation Cost Not yet Recognized	$ 2,000
Compensation Cost Not yet Recognized, Period for Recognition	1 year 3 months
Estimated Values And Weighted Average Assumptions [Abstract]
Estimated values (in dollars per share)	$ 35.30	$ 29.76	$ 31.63
Risk-free interest rate	1.40%	0.90%	0.60%
Dividend yield	2.90%	3.30%	2.90%
Restricted Stock Units Activity [Roll Forward]
Number of RSUs outstanding, beginning balance	106.8
Number of RSUs granted	45.2
Number of RSUs assumed In acquisition	1.1
Number of RSUs vested	(40.5)
Number of RSUs forfeited	(12.2)
Number of RSUs outstanding, ending balance	100.4	106.8
Number of RSUs expected to vest	96.5
Weighted average grant date fair value, RSUs outstanding	$ 32.36	$ 28.99
Weighted average grant date fair value, RSUs granted	35.30
Weighted average grant date fair value, RSUs assumed in acquisition	34.90
Weighted average grant date fair value, RSUs vested	27.52
Weighted average grant date fair value, RSUs forfeited	30.08
Weighted average grant date fair value, RSUs expected to vest	$ 32.36
Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Additional General Disclosures [Abstract]
Expiration Period	7 years
Market-Based Restricted Stock Units (OSUs) [Member]
Estimated Values And Weighted Average Assumptions [Abstract]
Volatility (percent)	23.00%	23.00%	27.00%
Restricted Stock Units Activity [Roll Forward]
Number of RSUs outstanding, ending balance	9.2
Market-Based Restricted Stock Units (OSUs) [Member] \| Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Additional General Disclosures [Abstract]
Vesting range (percent)	0.00%
Market-Based Restricted Stock Units (OSUs) [Member] \| Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Additional General Disclosures [Abstract]
Vesting range (percent)	200.00%
Stock Purchase Plan RIghts [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Additional General Disclosures [Abstract]
Compensation Cost Not yet Recognized	$ 13
Compensation Cost Not yet Recognized, Period for Recognition	2 months
Stock Purchase Plan Shares Issued in Period	14.5	16.5	15.8
Employee Purchases, Amount	$ 432	$ 415	$ 421
Estimated Values And Weighted Average Assumptions [Abstract]
Estimated values (in dollars per share)	$ 7.20	$ 6.70	$ 6.56
Risk-free interest rate	1.00%	0.50%	0.10%
Dividend yield	2.90%	3.20%	3.10%
Volatility (percent)	19.00%	22.00%	25.00%
Expected life (in years)	6 months	6 months	6 months
2006 Equity Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized	33.0
Share-based Compensation Arrangement by Share-based Payment Award, Additional General Disclosures [Abstract]
Number of Shares Authorized	786.0
Number of Shares Available for Grant	215.0
2006 Stock Purchase Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Additional General Disclosures [Abstract]
Number of Shares Authorized	373.0
Number of Shares Available for Grant	150.0
Stock Purchase Plan, Purchase Price of Common Stock, Percent	85.00%
Inventories [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Additional General Disclosures [Abstract]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs, Capitalized Amount	$ 49	$ 44	$ 49

Employee Purchases, Amount.

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Number Of Restricted Stock Units Expected To Vest

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Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Acquired in Period Weighted Average Grant Date Fair Value

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Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Assumed in Acquisition

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Share-based Compensation Arrangement by Share-based Payment Award, Market-Based Restricted Stock Units Performance Period

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Vesting Range

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- Definition

Represents the compensation cost capitalized during the period arising from equity-based compensation arrangements (for example, shares of stock, units, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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Unrecognized cost of unvested share-based compensation awards.

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Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The total recognized tax benefit related to compensation cost for equity-based payment arrangements recognized in income during the period.

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The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585

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Estimated period over which an employee is required to provide service in exchange for the equity-based payment award, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

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- Definition

Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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- Definition

The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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The weighted average fair value of nonvested awards on equity-based plans excluding option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units.

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The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash.

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- Definition

The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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- Definition

The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

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The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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The risk-free interest rate assumption that is used in valuing an option on its own shares.

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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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Number of additional shares authorized for issuance under an established share-based compensation plan.

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The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

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The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

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The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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Number of share instruments newly issued under a share-based compensation plan.

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Intrinsic value of equity-based compensation awards vested. Excludes stock and unit options.

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Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Expected term of share-based compensation awards, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (f)(2)(i)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 14.D.2)
-URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809

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Purchase price of common stock expressed as a percentage of its fair value.

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