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Goodwill and Other Intangible Assets (Tables)
12 Months Ended
Sep. 30, 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 fiscal years ended September 30, 2021 and 2020 were as follows (in millions):
September 30, 2019Business
Acquisitions
Business
Divestitures
ImpairmentsCurrency Translation 
and Other
September 30,
2020
   Building Solutions North America$9,588 $— $— $(424)$(4)$9,160 
   Building Solutions EMEA/LA1,849 35 — — 83 1,967 
   Building Solutions Asia Pacific1,194 — (11)— 43 1,226 
   Global Products5,547 21 — — 11 5,579 
Total$18,178 $56 $(11)$(424)$133 $17,932 
 September 30,
2020
Business
Acquisitions
Business
Divestitures
ImpairmentsCurrency Translation 
and Other
September 30,
2021
   Building Solutions North America$9,160 $21 $— $— $34 $9,215 
   Building Solutions EMEA/LA1,967 35 — — 19 2,021 
   Building Solutions Asia Pacific1,226 — (7)— 21 1,240 
   Global Products5,579 244 — — 36 5,859 
Total$17,932 $300 $(7)$— $110 $18,335 
Other Intangible Assets
The Company’s other intangible assets, primarily from business acquisitions valued based on independent appraisals, consisted of (in millions):
 September 30, 2021September 30, 2020
 Gross
Carrying
Amount
Accumulated
Amortization
NetGross
Carrying
Amount
Accumulated
Amortization
Net
Definite-lived intangible assets
Technology$1,464 $(629)$835 $1,332 $(497)$835 
Customer relationships3,097 (1,191)1,906 2,773 (969)1,804 
Miscellaneous750 (354)396 657 (268)389 
5,311 (2,174)3,137 4,762 (1,734)3,028 
Indefinite-lived intangible assets
Trademarks/tradenames2,332 — 2,332 2,248 — 2,248 
Miscellaneous80 — 80 80 — 80 
2,412 — 2,412 2,328 — 2,328 
Total intangible assets$7,723 $(2,174)$5,549 $7,090 $(1,734)$5,356