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Goodwill and Other Intangible Assets (Tables)
6 Months Ended
Mar. 31, 2022
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, 2022 were as follows (in millions):
Business AcquisitionsBusiness DivestituresImpairmentsCurrency Translation and Other
September 30,March 31,
20212022
Building Solutions North America$9,215 $24 $— $(235)$12 $9,016 
Building Solutions EMEA/LA2,041 38 (82)— (54)1,943 
Building Solutions Asia Pacific1,237 45 (16)— 1,270 
Global Products5,842 16 — — (58)5,800 
Total$18,335 $123 $(98)$(235)$(96)$18,029 
Other Intangible Assets
The Company’s other intangible assets, primarily from business acquisitions valued based on independent appraisals, consisted of (in millions):
 March 31, 2022September 30, 2021
 Gross
Carrying
Amount
Accumulated
Amortization
NetGross
Carrying
Amount
Accumulated
Amortization
Net
Definite-lived intangible assets
Technology$1,376 $(621)$755 $1,464 $(629)$835 
Customer relationships2,853 (1,240)1,613 3,097 (1,191)1,906 
Miscellaneous703 (358)345 750 (354)396 
4,932 (2,219)2,713 5,311 (2,174)3,137 
Indefinite-lived intangible assets
Trademarks/trade names2,176 — 2,176 2,332 — 2,332 
Miscellaneous— — — 80 — 80 
2,176 — 2,176 2,412 — 2,412 
Total intangible assets$7,108 $(2,219)$4,889 $7,723 $(2,174)$5,549