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Goodwill and Other Intangible Assets (Tables)
 12 Months Ended
Dec. 31, 2022
Goodwill and Intangible Assets Disclosure [Abstract]  
Rollforward of Goodwill
The following is a rollforward of the Company’s goodwill by segment ($ in millions):  
BiotechnologyLife SciencesDiagnosticsEnvironmental & Applied SolutionsTotal
Balance, January 1, 2021$— $25,812 $7,082 $2,526 $35,420 
Attributable to 2021 acquisitions— 7,077 110 48 7,235 
Attributable to 2021 divestitures— — — (12)(12)
Adjustments due to finalization of purchase price allocations— (11)— — (11)
Foreign currency translation and other— (1,240)(148)(60)(1,448)
Balance, December 31, 2021— 31,638 7,044 2,502 41,184 
Attributable to acquisitions (a)
— 157 — 40 197 
Adjustments due to finalization of purchase price allocations— 26 (9)1 18 
Foreign currency translation and other— (2,676)(330)(142)(3,148)
Balance, before resegmentation— 29,145 6,705 2,401 38,251 
Reallocation among new reporting units (a)
21,019 (21,019)— — — 
Attributable to acquisitions176 43 13 (2)230 
Adjustments due to finalization of purchase price allocations— (2)— — (2)
Foreign currency translation and other892 147 157 77 1,273 
Balance, December 31, 2022$22,087 $8,314 $6,875 $2,476 $39,752 
(a) A total of approximately $21.0 billion of goodwill was allocated to the Biotechnology reportable segment, of which $116 million is shown on the Attributable to acquisitions line before resegmentation as it relates to a 2022 acquisition that occurred prior to the allocation date.
Schedule of Finite-lived Intangible Assets and Indefinite-lived Intangible Assets by Major Class The following summarizes the gross carrying value and accumulated amortization for each major category of intangible assets as of December 31 ($ in millions): 
 20222021
 Gross Carrying
Amount		Accumulated
Amortization		Gross Carrying
Amount		Accumulated
Amortization
Finite-lived intangibles:
Patents and technology$13,508 $(3,024)$14,377 $(2,281)
Customer relationships, trade names and other intangibles10,183 (4,212)9,547 (3,748)
Total finite-lived intangibles23,691 (7,236)23,924 (6,029)
Indefinite-lived intangibles:
Trademarks and trade names3,845 — 4,948 — 
Total intangibles$27,536 $(7,236)$28,872 $(6,029)