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Intangible Assets and Goodwill - Narrative (Details) - USD ($) $ in Millions | 3 Months Ended |  |
--- | --- | --- | ---
Apr. 01, 2018 | Apr. 02, 2017 | Dec. 31, 2017 | Jun. 16, 2017
Finite-Lived Intangible Assets [Line Items] |  |  |  |
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months | $ 4,400 |  |  |
Finite-Lived Intangible Assets, Amortization Expense, Year Two | 4,400 |  |  |
Finite-Lived Intangible Assets, Amortization Expense, Year Three | 4,400 |  |  |
Finite-Lived Intangible Assets, Amortization Expense, Year Four | 4,400 |  |  |
Finite-Lived Intangible Assets, Amortization Expense, Year Five | 4,400 |  |  |
Intangible Assets and Goodwill (Textuals) |  |  |  |
Amortization expense of amortizable intangible assets | 1,100 | $ 300 |  |
Goodwill | $ 31,149 |  | $ 31,906 |
Patents And Trademarks |  |  |  |
Intangible Assets and Goodwill (Textuals) |  |  |  |
Finite-Lived Intangible Assets, Weighted-Average Useful Life | 11 years |  |  |
Customer relationships and other intangible assets |  |  |  |
Intangible Assets and Goodwill (Textuals) |  |  |  |
Finite-Lived Intangible Assets, Weighted-Average Useful Life | 22 years |  |  |
PHARMACEUTICAL |  |  |  |
Intangible Assets and Goodwill (Textuals) |  |  |  |
Goodwill | $ 9,256 |  | 9,109 |
Medical Devices |  |  |  |
Intangible Assets and Goodwill (Textuals) |  |  |  |
Goodwill | 12,994 |  | $ 13,922 |
Actelion |  |  |  |
Intangible Assets and Goodwill (Textuals) |  |  |  |
Goodwill | 6,161 |  |  | $ 5,986
AMO | Medical Devices |  |  |  |
Intangible Assets and Goodwill (Textuals) |  |  |  |
Total amortizable intangibles |  | 2,300 |  |
Goodwill |  | $ 1,700 |  |
Valchlor |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |
Disposal Group, Including Discontinued Operation, Other Assets, Noncurrent | 400 |  |  |
Patents And Trademarks |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |
Disposal Group, Including Discontinued Operation, Other Assets, Noncurrent | 600 |  |  |
Patents And Trademarks | LifeScan |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |
Disposal Group, Including Discontinued Operation, Other Assets, Noncurrent | 100 |  |  |
Patents And Trademarks | Valchlor |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |
Disposal Group, Including Discontinued Operation, Other Assets, Noncurrent | 500 |  |  |
Goodwill | LifeScan |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |
Disposal Group, Including Discontinued Operation, Other Assets, Noncurrent | $ 1,000 |  |  |

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- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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- Definition Amount classified as other assets attributable to disposal group held for sale or disposed of, expected to be disposed of after one year or the normal operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 5B -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=64827811&loc=SL51721673-107760 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 45 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=65878427&loc=d3e1107-107759 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=84176398&loc=d3e2941-110230 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=68055307&loc=d3e2510-110228 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=65878427&loc=SL51721533-107759 + Details
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- Definition Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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