v3.26.1
Revenues - Disaggregation of Revenue (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jul. 04, 2026
Jun. 28, 2025
Jul. 04, 2026
Jun. 28, 2025
Disaggregation of Revenue [Line Items]        
Revenues $ 3,827 $ 3,716 $ 7,522 $ 7,022
United States        
Disaggregation of Revenue [Line Items]        
Revenues 2,687 2,655 5,334 4,933
Europe        
Disaggregation of Revenue [Line Items]        
Revenues 334 344 718 665
Other international        
Disaggregation of Revenue [Line Items]        
Revenues 806 717 1,470 1,424
Commercial        
Disaggregation of Revenue [Line Items]        
Revenues 2,776 2,720 5,316 5,102
U.S. Government        
Disaggregation of Revenue [Line Items]        
Revenues 1,051 996 2,206 1,920
Textron Aviation        
Disaggregation of Revenue [Line Items]        
Revenues 1,544 1,522 3,029 2,738
Textron Aviation | United States        
Disaggregation of Revenue [Line Items]        
Revenues 1,136 1,083 2,236 1,995
Textron Aviation | Europe        
Disaggregation of Revenue [Line Items]        
Revenues 105 154 255 243
Textron Aviation | Other international        
Disaggregation of Revenue [Line Items]        
Revenues 303 285 538 500
Textron Aviation | Commercial        
Disaggregation of Revenue [Line Items]        
Revenues 1,461 1,436 2,852 2,583
Textron Aviation | U.S. Government        
Disaggregation of Revenue [Line Items]        
Revenues 83 86 177 155
Textron Aviation | Aircraft        
Disaggregation of Revenue [Line Items]        
Revenues 1,032 1,015 1,986 1,748
Textron Aviation | Aftermarket parts and services        
Disaggregation of Revenue [Line Items]        
Revenues 512 507 1,043 990
Bell        
Disaggregation of Revenue [Line Items]        
Revenues 1,074 1,016 2,144 1,999
Bell | United States        
Disaggregation of Revenue [Line Items]        
Revenues 815 820 1,682 1,502
Bell | Europe        
Disaggregation of Revenue [Line Items]        
Revenues 29 12 55 68
Bell | Other international        
Disaggregation of Revenue [Line Items]        
Revenues 230 184 407 429
Bell | Commercial        
Disaggregation of Revenue [Line Items]        
Revenues 372 361 647 722
Bell | U.S. Government        
Disaggregation of Revenue [Line Items]        
Revenues 702 655 1,497 1,277
Bell | Military aircraft and support programs        
Disaggregation of Revenue [Line Items]        
Revenues 695 648 1,490 1,282
Bell | Commercial helicopters, parts and services        
Disaggregation of Revenue [Line Items]        
Revenues 379 368 654 717
Textron Systems        
Disaggregation of Revenue [Line Items]        
Revenues 347 324 685 623
Textron Systems | United States        
Disaggregation of Revenue [Line Items]        
Revenues 306 293 612 565
Textron Systems | Europe        
Disaggregation of Revenue [Line Items]        
Revenues 19 11 33 23
Textron Systems | Other international        
Disaggregation of Revenue [Line Items]        
Revenues 22 20 40 35
Textron Systems | Commercial        
Disaggregation of Revenue [Line Items]        
Revenues 81 79 158 152
Textron Systems | U.S. Government        
Disaggregation of Revenue [Line Items]        
Revenues 266 245 527 471
Industrial        
Disaggregation of Revenue [Line Items]        
Revenues 848 839 1,634 1,631
Industrial | United States        
Disaggregation of Revenue [Line Items]        
Revenues 427 454 797 862
Industrial | Europe        
Disaggregation of Revenue [Line Items]        
Revenues 180 166 372 330
Industrial | Other international        
Disaggregation of Revenue [Line Items]        
Revenues 241 219 465 439
Industrial | Commercial        
Disaggregation of Revenue [Line Items]        
Revenues 848 829 1,629 1,614
Industrial | U.S. Government        
Disaggregation of Revenue [Line Items]        
Revenues 0 10 5 17
Industrial | Fuel systems and functional components        
Disaggregation of Revenue [Line Items]        
Revenues 500 483 986 933
Industrial | Specialized vehicles        
Disaggregation of Revenue [Line Items]        
Revenues 348 356 648 698
Finance        
Disaggregation of Revenue [Line Items]        
Revenues 14 15 30 31
Finance | United States        
Disaggregation of Revenue [Line Items]        
Revenues 3 5 7 9
Finance | Europe        
Disaggregation of Revenue [Line Items]        
Revenues 1 1 3 1
Finance | Other international        
Disaggregation of Revenue [Line Items]        
Revenues 10 9 20 21
Finance | Commercial        
Disaggregation of Revenue [Line Items]        
Revenues 14 15 30 31
Finance | U.S. Government        
Disaggregation of Revenue [Line Items]        
Revenues $ 0 $ 0 $ 0 $ 0