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BUSINESS COMBINATIONS - ADDITIONAL INFORMATION (Details) - USD ($) |  |  |  | 3 Months Ended
--- | --- | --- | --- | ---
Feb. 01, 2021 | Jan. 21, 2021 | Dec. 31, 2020 | Mar. 31, 2021 | Mar. 31, 2020
Business Acquisition [Line Items] |  |  |  |  |
Goodwill |  |  | $ 3,986,000,000 | $ 3,952,000,000 |
Reduction in goodwill (less than) |  |  |  | 3,000,000 |
Proceeds from divestiture of business |  |  |  | 19,000,000 | $ 0
Gain on sale of business |  |  |  | 13,000,000 | $ 0
Disposal Group, Disposed of by Sale, Not Discontinued Operations | Investment Casting Business |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Proceeds from divestiture of business | $ 19,000,000 |  |  |  |
Gain on sale of business |  |  |  | 13,000,000 |
Datum Dental, Ltd |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Payments to acquire businesses, gross |  | $ 94,000,000 |  |  |
Business combination, contingent consideration arrangements, range of outcomes, value, high |  | $ 10,000,000 |  |  |
Percentage of voting interest acquired |  | 100.00% |  |  |
Additional consideration based on earn out |  | $ 9,000,000 |  |  |
Total acquisition consideration |  | 103,000,000 |  |  |
Goodwill |  | $ 33,000,000 |  |  |
Straight Smile LLC |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Payments to acquire businesses, gross |  |  | $ 1,000,000,000.0 |  |
Percentage of voting interest acquired |  |  | 100.00% |  |
Goodwill |  |  | $ 628,000,000 |  |
Reduction in goodwill (less than) |  |  |  | $ 3,000,000 |

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