v3.26.1
DEBT
 6 Months Ended
Mar. 31, 2026
Debt Disclosure [Abstract]  
DEBT DEBT
On February 10, 2026, the Company entered into a $2 billion 364-day revolving backup credit facility to support commercial paper borrowings. This facility replaces the Company's $3 billion 364-day revolving backup credit facility entered into on February 11, 2025, which expired by its terms. This facility is in addition to the Company's existing $3.5 billion five-year revolving backup credit facility with various banks, which was entered into in February 2023. Both credit facilities are unsecured and may be accessed under various interest rate alternatives at the Company's option. The fees to maintain the facilities are immaterial and the Company has not incurred any borrowings under either facility or previous facilities.
In March 2025, the Company issued €500 of 3.0% notes due March 2031, $500 of 5.0% notes due March 2035, and €500 of 3.5% notes due March 2037. The Company used the net proceeds from the sale of the notes and increased commercial paper borrowings, along with cash on hand, to fund the AspenTech transaction (see Note 4).