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SIGNIFICANT ACCOUNTING POLICIES - Goodwill and Other Intangible Assets (Details) $ in Millions | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 30, 2022 USD ($) item | Jun. 30, 2022 USD ($) segment | Dec. 31, 2022 USD ($) segment | Dec. 31, 2021 USD ($)
Changes in the carrying amount of goodwill for each of the company's reportable segments |  |  |  |
Number of reporting units | item | 12 |  |  |
Number of operating units | segment |  | 11 | 11 |
Changes in the carrying amount of goodwill |  |  |  |
Beginning goodwill |  | $ 8,063.9 | $ 8,063.9 | $ 6,006.9
Current year business combinations |  |  |  | 2,147.3
Prior year business combinations |  |  | 253.8 | (0.9)
Effect of foreign currency translation |  |  | (305.0) | (89.4)
Ending goodwill |  |  | 8,012.7 | 8,063.9
Impairment of goodwill |  |  | 0.0 | 0.0
Goodwill expected to be tax deductible |  |  |  | 2,209.0
Nalco Holding Company ("Nalco") | Trademarks |  |  |  |
Changes in the carrying amount of goodwill |  |  |  |
Carrying value of asset subject to impairment testing | $ 1,200.0 | 1,200.0 |  |
Impairment of indefinite life intangible asset |  |  | 0.0 |
Global Industrial |  |  |  |
Changes in the carrying amount of goodwill |  |  |  |
Beginning goodwill |  | 4,270.1 | 4,270.1 | 4,287.9
Current year business combinations |  |  |  | 6.9
Prior year business combinations |  |  | 0.4 | (0.9)
Effect of foreign currency translation |  |  | (188.7) | (23.8)
Ending goodwill |  |  | 4,081.8 | 4,270.1
Global Institutional and Specialty |  |  |  |
Changes in the carrying amount of goodwill |  |  |  |
Beginning goodwill |  | 576.5 | 576.5 | 564.1
Current year business combinations |  |  |  | 17.2
Effect of foreign currency translation |  |  | (8.9) | (4.8)
Ending goodwill |  |  | 567.6 | 576.5
Global Healthcare and Life Sciences |  |  |  |
Changes in the carrying amount of goodwill |  |  |  |
Beginning goodwill |  | 2,974.2 | 2,974.2 | 909.8
Current year business combinations |  |  |  | 2,123.2
Prior year business combinations |  |  | 253.4 |
Effect of foreign currency translation |  |  | (102.2) | (58.8)
Ending goodwill |  |  | 3,125.4 | 2,974.2
Other |  |  |  |
Changes in the carrying amount of goodwill |  |  |  |
Beginning goodwill |  | $ 243.1 | 243.1 | 245.1
Effect of foreign currency translation |  |  | (5.2) | (2.0)
Ending goodwill |  |  | $ 237.9 | $ 243.1

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