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Revenue Recognition
 9 Months Ended
Jun. 30, 2025
Revenue from Contract with Customer [Abstract]  
Revenue Recognition REVENUE RECOGNITION
Disaggregated Revenue

The following tables present the Company's revenues disaggregated by segment and by Products & Systems and Services revenue (in millions):
Three Months Ended June 30,
20252024
Products & SystemsServicesTotalProducts & SystemsServicesTotal
Americas
$2,847 $1,195 $4,042 $2,887 $1,148 $4,035 
EMEA
756 517 1,273 710 467 1,177 
APAC
519 218 737 492 194 686 
Total$4,122 $1,930 $6,052 $4,089 $1,809 $5,898 

Nine Months Ended June 30,
20252024
Products & SystemsServicesTotalProducts & SystemsServicesTotal
Americas
$8,094 $3,412 $11,506 $8,114 $3,227 $11,341 
EMEA
2,177 1,454 3,631 2,086 1,354 3,440 
APAC
1,401 616 2,017 1,376 547 1,923 
Total$11,672 $5,482 $17,154 $11,576 $5,128 $16,704 

Contract Balances

Contract assets relate to the Company’s right to consideration for performance obligations satisfied but not billed. Contract liabilities relate to customer payments received in advance of satisfaction of performance obligations under the contract. Contract balances are classified as assets or liabilities on a contract-by-contract basis at the end of each reporting period. 

The following table presents the location and amount of contract balances in the Company's consolidated statements of financial position (in millions):
Location of contract balancesJune 30, 2025September 30, 2024
Contract assets - currentAccounts receivable - net$2,119 $1,931 
Contract assets - noncurrentOther noncurrent assets7 11 
Contract liabilities - currentDeferred revenue2,428 2,160 
Contract liabilities - noncurrentOther noncurrent liabilities269 252 

For the three months ended June 30, 2025 and 2024, the Company recognized revenue of $279 million and $267 million, respectively, that was included in the contract liability balance at the end of the prior fiscal year. For the nine months ended June 30, 2025 and 2024, the Company recognized revenue of $1,550 million and $1,475 million, respectively, that was included in the contract liability balance at the end of the prior fiscal year.
Performance Obligations

Performance obligations are satisfied at a point in time or over time. The timing of satisfying the performance obligation is typically stipulated by the terms of the contract. As of June 30, 2025, the aggregate amount of the transaction price allocated to remaining performance obligations was approximately $22.4 billion, of which approximately 63% is expected to be recognized as revenue over the next two years. The remaining performance obligations expected to be recognized in revenue beyond two years primarily relate to large, multi-purpose construction contracts, which include services to be performed over the building's lifetime, with initial contract terms of 25 to 35 years. Future contract modifications could affect both the timing and the amount of the remaining performance obligations. The Company excludes the value of remaining performance obligations for service contracts with an original expected duration of one year or less and contracts that are cancellable without substantial penalty.

Costs to Obtain or Fulfill a Contract

The Company recognizes the incremental costs incurred to obtain or fulfill a contract with a customer as an asset when these costs are recoverable. These costs consist primarily of sales commissions and design costs that relate to a contract or an anticipated contract that the Company expects to recover. Costs to obtain or fulfill a contract are capitalized and amortized over the period of contract performance.

The following table presents the location and amount of costs to obtain or fulfill a contract recorded in the Company's consolidated statements of financial position (in millions):

June 30, 2025September 30, 2024
Other current assets$306 $265 
Other noncurrent assets257 291 
Total$563 $556 

During the three months ended June 30, 2025 and 2024, the Company recognized expense of $104 million and $84 million, respectively, related to costs to obtain or fulfill a contract. During the nine months ended June 30, 2025 and 2024, the Company recognized expense of $279 million and $218 million, respectively, related to costs to obtain or fulfill a contract.