v3.25.4
Segment Financial Information - Revenue and Disbursement of Costs and Expenses by Segments (Details) - USD ($)
$ in Millions
 12 Months Ended
Jan. 03, 2026
Dec. 28, 2024
Dec. 30, 2023
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]      
Revenues $ 14,799 $ 13,702 $ 13,683
Costs, expenses and other      
Research and development costs 521 491 570
Selling and administrative expense 1,173 1,156 1,225
Interest expense, net 126 97 77
Operating Segment      
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]      
Revenues 14,799 13,702 13,683
Costs, expenses and other      
Total cost of sales 11,873 10,952 10,689
Research and development costs 521 491 570
Selling and administrative expense 1,024 1,040 1,082
Interest expense, net 18 19 15
Segment profit (loss) 1,363 1,200 1,327
Textron Aviation      
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]      
Revenues 5,955 5,284 5,373
Textron Aviation | Operating Segment      
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]      
Revenues 5,955 5,284 5,373
Costs, expenses and other      
Total cost of sales 4,637 4,102 4,116
Research and development costs 214 208 199
Selling and administrative expense 410 408 409
Interest expense, net 0 0 0
Segment profit (loss) 694 566 649
Bell      
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]      
Revenues 4,282 3,579 3,147
Bell | Operating Segment      
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]      
Revenues 4,282 3,579 3,147
Costs, expenses and other      
Total cost of sales 3,537 2,899 2,392
Research and development costs 153 97 192
Selling and administrative expense 229 213 243
Interest expense, net 0 0 0
Segment profit (loss) 363 370 320
Textron Systems      
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]      
Revenues 1,247 1,241 1,235
Textron Systems | Operating Segment      
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]      
Revenues 1,247 1,241 1,235
Costs, expenses and other      
Total cost of sales 939 929 925
Research and development costs 45 51 53
Selling and administrative expense 88 107 110
Interest expense, net 0 0 0
Segment profit (loss) 175 154 147
Industrial      
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]      
Revenues 3,213 3,515 3,841
Industrial | Operating Segment      
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]      
Revenues 3,213 3,515 3,841
Costs, expenses and other      
Total cost of sales 2,733 2,993 3,221
Research and development costs 67 72 80
Selling and administrative expense 268 299 312
Interest expense, net 0 0 0
Segment profit (loss) 145 151 228
Textron eAviation      
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]      
Revenues 27 33 32
Textron eAviation | Operating Segment      
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]      
Revenues 27 33 32
Costs, expenses and other      
Total cost of sales 27 29 35
Research and development costs 42 63 46
Selling and administrative expense 21 17 14
Interest expense, net 0 0 0
Segment profit (loss) (63) (76) (63)
Finance      
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]      
Revenues 75 50 55
Finance | Operating Segment      
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]      
Revenues 75 50 55
Costs, expenses and other      
Total cost of sales 0 0 0
Research and development costs 0 0 0
Selling and administrative expense 8 (4) (6)
Interest expense, net 18 19 15
Segment profit (loss) $ 49 $ 35 $ 46