v3.26.1
Short-Term and Long-Term Debt
6 Months Ended
Mar. 31, 2026
Debt Disclosure [Abstract]  
Short-Term and Long-Term Debt Short-Term and Long-Term Debt
Our Short-term debt as of March 31, 2026, included commercial paper borrowings of $1,025 million, with a weighted average interest rate of 4.00 percent, and a weighted average maturity period of 28 days. Our Short-term debt as of September 30, 2025, included commercial paper borrowings of $522 million, with a weighted average interest rate of 4.24 percent, and a weighted average maturity period of 16 days.
In December 2022, Sensia entered into an unsecured $75 million line of credit. There were no borrowings outstanding under the line of credit as of December 31, 2025, as the credit line matured and closed and outstanding debt was settled with loans from the joint venture partners. As of September 30, 2025, included in Short-term debt was $70 million borrowed against the line of credit with an interest rate of 5.18 percent. Also included in Short-term debt as of March 31, 2026, were the following interest-bearing loans from Schlumberger (SLB) to Sensia: $42 million due October 15, 2026, $14 million due June 15, 2026, and $33 million due June 10, 2026. As of September 30, 2025, the $14 million and $42 million of interest-bearing loans were included in Short-term debt and Long-term debt, respectively. Pursuant to the separation agreement referenced in Note 1, all intercompany debt was settled by the joint venture partners upon dissolution.
In November 2025, we replaced our former $1.5 billion unsecured revolving credit facility with a new five-year $1.5 billion unsecured revolving credit facility, expiring in November 2030. This credit facility uses the secured overnight funding rate (SOFR) as the primary basis for determining interest payments. We can increase the aggregate amount of this credit facility by up to $750 million, subject to the consent of the banks in the credit facility. We did not borrow against this credit facility during the quarter ended March 31, 2026, or against our prior credit facility during the quarter ended September 30, 2025. The terms of this credit facility contain covenants under which we agree to maintain an EBITDA-to-interest ratio of at least 3.0 to 1.0. The EBITDA-to-interest ratio is defined in the credit facility as the ratio of consolidated EBITDA for the preceding four quarters to consolidated interest expense for the same period.
The following table presents the carrying amounts and estimated fair values of Long-term debt in the Consolidated Balance Sheet (in millions):
 March 31, 2026September 30, 2025
 Carrying ValueFair ValueCarrying ValueFair Value
Current portion of long-term debt$$$$
Long-term debt2,571 2,258 2,614 2,350 
We base the fair value of Long-term debt upon quoted market prices for the same or similar issues and therefore consider this a level 2 fair value measurement. The fair value of Long-term debt considers the terms of the debt excluding the impact of derivative and hedging activity. Refer to Note 8 for further information regarding levels in the fair value hierarchy. The carrying value of our Short-term debt approximates fair value.