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Goodwill and Other Intangible Assets (Changes in Net Carrying Amount of Goodwill by Segment) (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019
Goodwill [Roll Forward] |  |
Goodwill, Beginning balance | $ 9,069 | $ 8,563
Additions and adjustments | 3,559 | 547
Foreign exchange | 150 | (41)
Goodwill, Ending balance | 12,778 | 9,069
Orthopaedics |  |
Goodwill [Roll Forward] |  |
Goodwill, Beginning balance | 2,386 | 2,399
Additions and adjustments | 3,551 | 0
Foreign exchange | 67 | (13)
Goodwill, Ending balance | 6,004 | 2,386
MedSurg |  |
Goodwill [Roll Forward] |  |
Goodwill, Beginning balance | 3,799 | 3,581
Additions and adjustments | 1 | 229
Foreign exchange | 31 | (11)
Goodwill, Ending balance | 3,831 | 3,799
Neuro and Spine |  |
Goodwill [Roll Forward] |  |
Goodwill, Beginning balance | 2,884 | 2,583
Additions and adjustments | 7 | 318
Foreign exchange | 52 | (17)
Goodwill, Ending balance | $ 2,943 | $ 2,884

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- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(10)(1)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=120320667&loc=SL49117168-202975 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=99380562&loc=d3e13770-109266 + Details
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- Definition Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121556970&loc=d3e13816-109267 + Details
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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. + References No definition available. + Details
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