v3.26.1
Fair Value Measurements (Tables)
6 Months Ended
Mar. 31, 2026
Fair Value Disclosures [Abstract]  
Assets and Liabilities Measured at Fair Value
The following tables present the Company’s fair value hierarchy for those assets and liabilities measured at fair value (in millions):
 Fair Value Measurements Using:
 Total as of
March 31, 2026
Quoted Prices
in Active
Markets
(Level 1)
Significant
Other
Observable
Inputs
(Level 2)
Significant
Unobservable
Inputs
(Level 3)
Other current assets
Derivatives
$115 $— $115 $— 
Other noncurrent assets
Deferred compensation plan assets63 63 — — 
Exchange traded funds (fixed income)(1)
71 71 — — 
Exchange traded funds (equity)(1)
205 205 — — 
Total assets$454 $339 $115 $— 
Other current liabilities
Derivatives
$136 $— $136 $— 
Contingent earn-out liabilities14 — — 14 
Total liabilities$150 $— $136 $14 
(1) Classified as restricted investments for payment of asbestos liabilities. See Note 18, "Commitments and Contingencies," of the notes to the consolidated financial statements for further details.
 Fair Value Measurements Using:

Total as of
September 30, 2025
Quoted Prices
in Active
Markets
(Level 1)
Significant
Other
Observable
Inputs
(Level 2)
Significant
Unobservable
Inputs
(Level 3)
Other current assets
Derivatives
$15 $— $15 $— 
Other noncurrent assets
Deferred compensation plan assets63 63 — — 
Exchange traded funds (fixed income)(1)
73 73 — — 
Exchange traded funds (equity)(1)
217 217 — — 
Total assets$368 $353 $15 $— 
Other current liabilities
Derivatives
$24 $— $24 $— 
Contingent earn-out liabilities19 — — 19 
Total liabilities$43 $— $24 $19 
(1) Classified as restricted investments for payment of asbestos liabilities. See Note 18, "Commitments and Contingencies," of the notes to the consolidated financial statements for further details.
Fair Value of Long-Term Debt
The fair value of long-term debt at March 31, 2026 and September 30, 2025 was as follows (in billions):
March 31,September 30,
20262025
Public debt$7.7 $8.4 
Other long-term debt0.5 0.5 
Total fair value of long-term debt$8.2 $8.9