Concentration of credit risk.

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- Definition

Effective Income Tax Rate Reconciliation Share-based Compensation Excess Tax Benefit Amount

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- Definition

Minimum Collateral Value as a Percent, Reverse Repurchase Agreement

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Number of employees engaged in company activities worldwide.

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Profit loss percent to sales.

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Sales return reserve

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Shipping and Handling Costs as a Percent of Sales

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- Definition

Tax Cuts And Jobs Act Of 2017, Incomplete Accounting, Global Intangible Low-Taxed Income, Liability, Provisional Income Tax Expense

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Tax Cuts And Jobs Act Of 2017, Incomplete Accounting, Transition Tax For Accumulated Foreign Earnings, Provisional Income Tax Expense

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- Definition

Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 720
-SubTopic 35
-Section 50
-Paragraph 1
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- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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Amount after tax of increase (decrease) to equity or (increase) decrease to net assets, resulting from the cumulative effect adjustment of a new accounting principle applied in the period of adoption.

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- Definition

Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards.

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Amount, after allocation of valuation allowances and deferred tax liability, of deferred tax asset attributable to deductible differences and carryforwards, with jurisdictional netting and classified as noncurrent.

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Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards classified as noncurrent.

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Amount of deferred tax liability attributable to taxable temporary differences from undistributed earnings of subsidiaries and other recognized entities not within the country of domicile of the entity.

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Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

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Amount of noncurrent assets classified as other.

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Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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The cumulative amount of the reporting entity's undistributed earnings or deficit.

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Cost incurred during the reporting period in transporting goods and services to customers. Includes freight-out costs.

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Summary of Significant Accounting Policies - Narrative (Details) $ in Millions	3 Months Ended	12 Months Ended
	Dec. 31, 2017 USD ($)	Dec. 30, 2018 USD ($) Employee Segment	Dec. 31, 2017 USD ($)	Jan. 01, 2017 USD ($)	Jan. 01, 2018 USD ($)
Concentration of Credit Risk [Line Items]
Number of employees \| Employee		135,100
Number of business segments \| Segment		3
Excess tax benefits				$ 353
GILTI, deferred tax liability	$ 1,600		$ 1,600
Deferred taxes on income	7,105	$ 7,640	7,105
Other assets	4,971	4,182	4,971
Retained earnings	101,793	$ 106,216	$ 101,793
Minimum reverse repurchase agreement collateral (as a percent)		102.00%
Sales return reserve (as a percent)		1.00%	1.00%	1.00%
Percentage of profit share payments (less than)		2.00%	2.00%	2.00%
Shipping and handling costs		$ 1,090	$ 1,042	$ 974
Shipping and handling costs as a percent of sales		0.50%
Advertising expense		$ 2,600	2,500	$ 2,400
Provisional toll tax charge	10,100
Deferred tax liability foreign taxes	4,457	$ 2,240	4,457
Deferred tax asset offset	$ 1,100		$ 1,100
Minimum \| Software Development
Concentration of Credit Risk [Line Items]
Estimated useful lives of the assets		3 years
Maximum \| Software Development
Concentration of Credit Risk [Line Items]
Estimated useful lives of the assets		8 years
R&D Expense
Concentration of Credit Risk [Line Items]
Concentration risk (as a percent)		5.00%
ASU 2016-16 - Income Taxes: Intra-Entity Transfers
Concentration of Credit Risk [Line Items]
Deferred taxes, net					$ 2,000
Other assets					(700)
Retained earnings					400
Retained Earnings
Concentration of Credit Risk [Line Items]
GILTI, deferred tax liability		$ 1,700			1,700
Retained Earnings \| ASU 2014-09 - Revenue from Contracts with Customers
Concentration of Credit Risk [Line Items]
Cumulative effect adjustment					(47)
Retained Earnings \| ASU 2016-01 - Financial Instruments
Concentration of Credit Risk [Line Items]
Cumulative effect adjustment					232
Retained Earnings \| ASU 2016-16 - Income Taxes: Intra-Entity Transfers
Concentration of Credit Risk [Line Items]
Cumulative effect adjustment					$ (439)