v3.26.3
SEGMENTS - Net Sales and EBITDA Defined by Segment to Consolidated Income Before Taxes Operations (Detail) - USD ($)
$ in Millions
 12 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2024
Segment Reporting [Line Items]      
Revenues $ 10,557 $ 8,831 $ 7,940
Earnings before interest taxes depreciation and amortization 113 112 106
Depreciation and amortization expense 445 367 312
Interest expense-net 2,008 1,572 1,286
Acquisition transaction and integration-related expenses 101 42 70
Non-cash stock and deferred compensation expense 158 157 217
Refinancing costs 28 11 58
Other, net 59 (18) 15
Income from continuing operations before income taxes 2,764 2,629 2,215
Operating Segments      
Segment Reporting [Line Items]      
Revenues 10,557 8,831 7,940
Earnings before interest taxes depreciation and amortization 5,676 4,872 4,279
Operating Segments | Commercial and non-aerospace OEM      
Segment Reporting [Line Items]      
Revenues 2,458 2,106 2,121
Operating Segments | Commercial and non-aerospace aftermarket      
Segment Reporting [Line Items]      
Revenues 3,427 2,804 2,508
Operating Segments | Defense      
Segment Reporting [Line Items]      
Revenues 4,491 3,761 3,146
Operating Segments | Non-aviation      
Segment Reporting [Line Items]      
Revenues 181 160 165
Operating Segments | Power & Control      
Segment Reporting [Line Items]      
Revenues 5,773 4,559 3,966
Other segment expenses 2,675 1,964 1,715
Earnings before interest taxes depreciation and amortization 3,098 2,595 2,251
Depreciation and amortization expense 245 180 133
Operating Segments | Power & Control | Commercial and non-aerospace OEM      
Segment Reporting [Line Items]      
Revenues 1,128 926 841
Operating Segments | Power & Control | Commercial and non-aerospace aftermarket      
Segment Reporting [Line Items]      
Revenues 1,784 1,360 1,218
Operating Segments | Power & Control | Defense      
Segment Reporting [Line Items]      
Revenues 2,861 2,273 1,907
Operating Segments | Airframe      
Segment Reporting [Line Items]      
Revenues 4,603 4,112 3,809
Other segment expenses 2,104 1,902 1,847
Earnings before interest taxes depreciation and amortization 2,499 2,210 1,962
Depreciation and amortization expense 194 181 172
Operating Segments | Airframe | Commercial and non-aerospace OEM      
Segment Reporting [Line Items]      
Revenues 1,330 1,180 1,280
Operating Segments | Airframe | Commercial and non-aerospace aftermarket      
Segment Reporting [Line Items]      
Revenues 1,643 1,444 1,290
Operating Segments | Airframe | Defense      
Segment Reporting [Line Items]      
Revenues 1,630 1,488 1,239
Operating Segments | Non-aviation      
Segment Reporting [Line Items]      
Revenues 181 160 165
Other segment expenses 102 93 99
Earnings before interest taxes depreciation and amortization 79 67 66
Depreciation and amortization expense 6 6 6
Operating Segments | Non-aviation | Non-aviation      
Segment Reporting [Line Items]      
Revenues $ 181 $ 160 $ 165