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Goodwill And Other Intangible Assets (Tables)
 12 Months Ended
Dec. 31, 2020
Goodwill and Intangible Assets Disclosure [Abstract]  
Rollforward and Carrying Value Of Goodwill
The following is a rollforward of the Company’s goodwill by segment ($ in millions):
Specialty Products & TechnologiesEquipment & ConsumablesTotal
Balance, December 31, 2018$2,013.8 $1,311.7 $3,325.5 
Foreign currency translation and other(5.7)(13.8)(19.5)
Balance, December 31, 20192,008.1 1,297.9 3,306.0 
Acquisitions25.1 — 25.1 
Foreign currency translation and other65.8 33.8 99.6 
Balance, December 31, 2020$2,099.0 $1,331.7 $3,430.7 
Schedule of Acquired Finite-Lived Intangible Assets by Major Class The following summarizes the gross carrying value and accumulated amortization for each major category of intangible asset as of December 31 ($ in millions): 
20202019
Gross
Carrying
Amount		Accumulated
Amortization		Gross
Carrying
Amount		Accumulated
Amortization
Finite-lived intangibles:
Patents and technology$337.2 $(215.7)$324.5 $(206.6)
Customer relationships and other intangibles967.2 (599.4)949.1 (540.6)
Trademarks and trade names199.1 (65.9)203.4 (43.2)
Total finite-lived intangibles1,503.5 (881.0)1,477.0 (790.4)
Indefinite-lived intangibles:
Trademarks and trade names636.7 — 599.0 — 
Total intangibles$2,140.2 $(881.0)$2,076.0 $(790.4)
Schedule of Acquired Indefinite-Lived Intangible Assets by Major Class The following summarizes the gross carrying value and accumulated amortization for each major category of intangible asset as of December 31 ($ in millions): 
20202019
Gross
Carrying
Amount		Accumulated
Amortization		Gross
Carrying
Amount		Accumulated
Amortization
Finite-lived intangibles:
Patents and technology$337.2 $(215.7)$324.5 $(206.6)
Customer relationships and other intangibles967.2 (599.4)949.1 (540.6)
Trademarks and trade names199.1 (65.9)203.4 (43.2)
Total finite-lived intangibles1,503.5 (881.0)1,477.0 (790.4)
Indefinite-lived intangibles:
Trademarks and trade names636.7 — 599.0 — 
Total intangibles$2,140.2 $(881.0)$2,076.0 $(790.4)