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Acquisitions, Divestitures, Assets and Liabilities Held for Sale, Licensing Arrangements, Research and Development and Collaborative Arrangements, Equity-Method Investments and Privately Held Investment - GSK (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2019
Liabilities Held for Sale |  |  |  |  |
Total Consumer liabilities held for sale | [1] | $ 1,890 | $ 0 |  |
Disposal Group, Held-for-sale, Not Discontinued Operations [Member] |  |  |  |  |
Assets Held for Sale |  |  |  |  |
Assets held for sale |  | 9,725 | 12 |  |
Other assets held for sale | [2] | 46 | 12 |  |
Consumer Healthcare [Member] | Disposal Group, Held-for-sale, Not Discontinued Operations [Member] |  |  |  |  |
Assets Held for Sale |  |  |  |  |
Cash and cash equivalents |  | 32 | 0 |  |
Trade accounts receivable, less allowance for doubtful accounts |  | 532 | 0 |  |
Inventories |  | 538 | 0 |  |
Other current assets |  | 56 | 0 |  |
PP&E |  | 675 | 0 |  |
Identifiable intangible assets, less accumulated amortization |  | 5,763 | 0 |  |
Goodwill |  | 1,972 | 0 |  |
Noncurrent deferred tax assets and other noncurrent tax assets |  | 54 | 0 |  |
Other noncurrent assets |  | 57 | 0 |  |
Assets held for sale |  | 9,678 | 0 |  |
Liabilities Held for Sale |  |  |  |  |
Trade accounts payable |  | 406 | 0 |  |
Income taxes payable |  | 39 | 0 |  |
Accrued compensation and related items |  | 93 | 0 |  |
Other current liabilities |  | 353 | 0 |  |
Pension benefit obligations, net |  | 39 | 0 |  |
Postretirement benefit obligations, net |  | 33 | 0 |  |
Noncurrent deferred tax liabilities |  | 870 | 0 |  |
Other noncurrent liabilities |  | 56 | 0 |  |
Total Consumer liabilities held for sale |  | 1,890 | 0 |  |
Pre-tax income attributable to disposal group |  | $ 977 | $ 863 | $ 780 |
GSK Consumer Healthcare [Member] | Forecast [Member] |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |
Equity method investment, ownership percentage |  |  |  |  | 32.00%
GSK [Member] | GSK Consumer Healthcare [Member] | Forecast [Member] |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |
Equity method investment, ownership percentage |  |  |  |  | 68.00%
[1] | Amounts may not add due to rounding.
[2] | Other assets held for sale consist of PP&E.

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