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Goodwill and Other Intangible Assets (Tables)
6 Months Ended
Mar. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract]  
Changes in Carrying Amount of Goodwill
The changes in the carrying amount of goodwill in each of the Company’s reportable segments for the six month period ended March 31, 2021 were as follows (in millions):
Business AcquisitionsBusiness DivestituresCurrency Translation and Other
September 30,March 31,
20202021
Building Solutions North America$9,160 $— $— $42 $9,202 
Building Solutions EMEA/LA1,967 13 — 51 2,031 
Building Solutions Asia Pacific1,226 — (6)40 1,260 
Global Products5,579 — — 52 5,631 
Total$17,932 $13 $(6)$185 $18,124 
Other Intangible Assets
The Company’s other intangible assets, primarily from business acquisitions valued based on independent appraisals, consisted of (in millions):
 March 31, 2021September 30, 2020
 Gross
Carrying
Amount
Accumulated
Amortization
NetGross
Carrying
Amount
Accumulated
Amortization
Net
Definite-lived intangible assets
Technology$1,351 $(566)$785 $1,332 $(497)$835 
Customer relationships2,805 (1,086)1,719 2,773 (969)1,804 
Miscellaneous710 (312)398 657 (268)389 
4,866 (1,964)2,902 4,762 (1,734)3,028 
Indefinite-lived intangible assets
Trademarks/trade names2,277 — 2,277 2,248 — 2,248 
Miscellaneous80 — 80 80 — 80 
2,357 — 2,357 2,328 — 2,328 
Total intangible assets$7,223 $(1,964)$5,259 $7,090 $(1,734)$5,356