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BUSINESS ACQUISITIONS, DISPOSITIONS, GOODWILL AND INTANGIBLE ASSETS
3 Months Ended
Mar. 31, 2020
Business Combinations [Abstract]  
BUSINESS ACQUISITIONS, DISPOSITIONS, GOODWILL AND INTANGIBLE ASSETS BUSINESS ACQUISITIONS, DISPOSITIONS, GOODWILL AND INTANGIBLE ASSETS
Business Acquisitions and Dispositions. There were no significant acquisitions or divestitures during the quarters ended March 31, 2020 and 2019.
Goodwill. The changes in the carrying amount of goodwill are as follows:
(dollars in millions)HVACRefrigerationFire & SecurityTotal
Balance as of January 1, 2020  $5,351  $1,228  $3,305  $9,884  
Foreign currency translation(204) (50) 18  (236) 
Balance at March 31, 2020  $5,147  $1,178  $3,323  $9,648  
Intangible Assets, net. Identifiable intangible assets are comprised of the following:
March 31, 2020December 31, 2019
(dollars in millions)Gross AmountAccumulated AmortizationGross AmountAccumulated Amortization
Amortized:
Customer relationships$1,448  $(1,142) $1,479  $(1,154) 
Patents and trademarks284  (201) 287  (201) 
Monitoring lines62  (49) 67  (52) 
Service portfolios and other624  (509) 629  (506) 
2,418  (1,901) 2,462  (1,913) 
Unamortized:
Trademarks and other497  —  534  —  
Intangible assets, net$2,915  $(1,901) $2,996  $(1,913) 
Amortization of Intangible assets was $25 million and $31 million for the quarters ended March 31, 2020 and 2019, respectively.