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Business Restructuring Charges (Tables)
6 Months Ended
Mar. 31, 2025
Restructuring and Related Activities [Abstract]  
Summary of Restructuring Accrual Activity
Restructuring liability activity for the six months ended March 31, 2025 was as follows:
(Millions of dollars)Employee
Termination
Other (a)
Total
Balance at September 30, 2024$58 $$60 
Charged to expense35 94 129 
Cash payments(41)(63)(104)
Non-cash settlements— (10)(10)
Other adjustments(1)— (1)
Balance at March 31, 2025$51 $23 $74 
(a)    Primarily consists of non-employee-related costs associated with the execution of the Company’s cost efficiency and restructuring programs, such as incremental project management costs and facility exit costs.