v3.26.3
Shareowners' Equity - Schedule of Reclassifications Out of Accumulated Other Comprehensive Loss (Details) - USD ($)
$ in Millions
12 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2024
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]      
Other income (expense) (Note 15) $ 50 $ (126) $ 62
Sales 8,989 8,342 8,264
Cost of sales (4,494) (4,326) (4,413)
Income before income taxes 1,685 917 1,100
Income tax provision (278) (168) (152)
Net income attributable to Rockwell Automation, Inc. 1,409 869 953
Reclassification out of Accumulated Other Comprehensive Income      
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]      
Net income attributable to Rockwell Automation, Inc. 28 22 (10)
Amortization of net actuarial loss (gain) | Reclassification out of Accumulated Other Comprehensive Income      
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]      
Other income (expense) (Note 15) 18 29 0
Settlement and curtailment charges | Reclassification out of Accumulated Other Comprehensive Income      
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]      
Other income (expense) (Note 15) 11 1 0
Pension and other postretirement benefit plan adjustments, net of tax | Reclassification out of Accumulated Other Comprehensive Income      
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]      
Income before income taxes 29 30 0
Income tax provision (6) (7) 0
Net income attributable to Rockwell Automation, Inc. 23 23 0
Accumulated gain (loss), net, cash flow hedge, parent | Reclassification out of Accumulated Other Comprehensive Income      
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]      
Sales (1) 1 (2)
Cost of sales 4 (7) (19)
Interest expense 4 4 4
Income before income taxes 7 (2) (17)
Income tax provision (2) 1 5
Net income attributable to Rockwell Automation, Inc. 5 (1) (12)
Accumulated currency translation adjustments, net of tax | Reclassification out of Accumulated Other Comprehensive Income      
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]      
Other income (expense) (Note 15) $ 0 $ 0 $ 2