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BUSINESS COMBINATIONS - ADDITIONAL INFORMATION (Details) - USD ($) $ in Millions |  |  | 12 Months Ended |
--- | --- | --- | --- | ---
Dec. 31, 2020 | May 01, 2018 | Dec. 31, 2020 | Dec. 31, 2018 | Dec. 31, 2019
Business Acquisition [Line Items] |  |  |  |  |
Goodwill | $ 3,986 |  | $ 3,986 | $ 3,431 | $ 3,397
Transaction related costs |  |  | 16 |  |
Privately Held Dental Service |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Payments to acquire equity method investments |  |  | $ 45 |  |
Reclassification out of Accumulated Other Comprehensive Income | DIO Corporation |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Unrealized holding gain, available-for-sale securities |  |  |  | $ 44 |
Straight Smile LLC |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Percentage of voting interest acquired | 100.00% |  | 100.00% |  |
Payments to acquire businesses, gross | $ 1,000 |  |  |  |
Total acquisition consideration |  |  | $ 1,000 |  |
Goodwill | $ 631 |  | $ 631 |  |
OraMetrix, Inc. |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Total acquisition consideration |  | $ 120 |  |  |
Goodwill |  | 58 |  |  |
Additional consideration based on earn out |  | $ 30 |  |  |

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- Definition This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 25 -Paragraph 23 -URI http://asc.fasb.org/extlink&oid=116868678&loc=d3e1043-128460 + Details
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