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Basis of Presentation and Significant Accounting Policies - Impact of Adoption of Pension and Postretirement Benefit Costs Accounting Standard (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2018 | Oct. 01, 2017 | Sep. 30, 2018 | Oct. 01, 2017
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |
Cost of sales | [1],[2] | $ 2,694 | $ 2,844 | $ 8,173 | $ 7,972
Selling, informational and administrative expenses | [1],[2] | 3,494 | 3,504 | 10,448 | 10,249
Research and development expenses | [1],[2] | 2,008 | 1,865 | 5,549 | 5,367
Restructuring charges and certain acquisition-related costs | [1] | 85 | 114 | 172 | 267
Other (income)/deductions––net | [1] | (414) | 79 | (1,143) | 65
Income from continuing operations before provision for taxes on income | [1],[3] | $ 4,177 | 3,585 | $ 12,831 | 11,351
As Previously Reported [Member] |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |
Cost of sales |  |  | 2,847 |  | 7,980
Selling, informational and administrative expenses |  |  | 3,500 |  | 10,233
Research and development expenses |  |  | 1,859 |  | 5,346
Restructuring charges and certain acquisition-related costs |  |  | 149 |  | 377
Other (income)/deductions––net |  |  | 51 |  | (16)
Income from continuing operations before provision for taxes on income |  |  | 3,585 |  | 11,351
Effect of Change Higher/(Lower) [Member] | Accounting Standards Update 2017-07 [Member] |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |
Cost of sales |  |  | (3) |  | (9)
Selling, informational and administrative expenses |  |  | 4 |  | 16
Research and development expenses |  |  | 6 |  | 21
Restructuring charges and certain acquisition-related costs |  |  | (35) |  | (110)
Other (income)/deductions––net |  |  | 28 |  | 81
Income from continuing operations before provision for taxes on income |  |  | $ 0 |  | $ 0
[1] | Amounts may not add due to rounding.
[2] | Excludes amortization of intangible assets, except as disclosed in Note 9A. Identifiable Intangible Assets and Goodwill: Identifiable Intangible Assets.
[3] | Income from continuing operations before provision for taxes on income. IH’s earnings include dividend income of $91 million and $54 million in the third quarter of 2018 and 2017, respectively, and $226 million and $211 million in the first nine months of 2018 and 2017, respectively, from our investment in ViiV. For additional information, see Note 4.

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- Definition This element represents (i) restructuring charges, which are amounts charged against earnings in the period for incurred and estimated costs associated with exit from or disposal of business activities or restructurings pursuant to a program that is planned and controlled by management, and materially changes either the scope of a business undertaken by an entity, or the manner in which that business is conducted; and (ii) acquisition-related costs, which are costs incurred to effect a business combination which costs have been expensed during the period. Such costs can include transaction costs such as banking, legal, accounting and other costs directly related to effect a business combination as well as external, incremental costs of integration planning that are directly related to a business combination, including costs associated with preparing for systems and other integration activities. + References No definition available. + Details
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- Definition The costs incurred in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, excluding in-process research and development acquired in a business combination consummated during the period. Excludes software research and development, which has a separate concept. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 730 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6420194&loc=d3e21568-108373 + Details
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