v3.26.1
Equity (Components Of Accumulated Other Comprehensive Income, Net Of Tax) (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Mar. 29, 2026
Mar. 30, 2025
Mar. 29, 2026
Mar. 30, 2025
Dec. 28, 2025
Sep. 28, 2025
Dec. 29, 2024
Sep. 29, 2024
Accumulated Other Comprehensive Income (Loss) [Line Items]                
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest $ (8,457.7) $ (7,615.4) $ (8,457.7) $ (7,615.4) $ (8,381.3) $ (8,089.2) $ (7,464.6) $ (7,441.6)
Net gains/(losses) in AOCI, beginning of period     (459.3)          
Other comprehensive income/(loss) 8.6 54.6 42.0 (100.2)        
Net gains/(losses) in AOCI, end of period (417.3)   (417.3)          
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-sale, Parent [Member]                
Accumulated Other Comprehensive Income (Loss) [Line Items]                
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest   (1.8)   (1.8) 1.2 0.5 (3.7) (2.3)
Net gains/(losses) recognized in OCI before reclassifications (2.1) 1.7 (1.6) 0.1        
Net (gains)/losses reclassified from AOCI to earnings 0.2 0.2 0.4 0.4        
Other comprehensive income/(loss) (1.9) 1.9 (1.2) 0.5        
Accumulated Net Investment Hedge Gain (Loss) Attributable to Parent [Member]                
Accumulated Other Comprehensive Income (Loss) [Line Items]                
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest   371.1   371.1 378.8 357.4 382.1 247.7
Net gains/(losses) recognized in OCI before reclassifications 6.3 9.8 47.7 164.9        
Net (gains)/losses reclassified from AOCI to earnings (18.0) (20.8) (38.0) (41.5)        
Other comprehensive income/(loss) (11.7) (11.0) 9.7 123.4        
Translation Adjustment [Member]                
Accumulated Other Comprehensive Income (Loss) [Line Items]                
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest   (965.6)   (965.6) (836.8) (858.1) (1,056.2) (744.7)
Net gains/(losses) recognized in OCI before reclassifications (2.9) 90.6 18.3 (220.6)        
Net (gains)/losses reclassified from AOCI to earnings 0.0 0.0 0.0        
Other comprehensive income/(loss) (2.9) 90.6 18.3 (220.6)        
Shareholders' Equity/(Deficit)                
Accumulated Other Comprehensive Income (Loss) [Line Items]                
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest (8,465.1) (7,622.5) (8,465.1) (7,622.5) (8,388.7) (8,096.6) (7,471.7) (7,448.9)
Other comprehensive income/(loss) 8.5 54.6 41.8 (99.9)        
Accumulated Other Comprehensive Income/(Loss)                
Accumulated Other Comprehensive Income (Loss) [Line Items]                
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest (417.3) (529.0) (417.3) (529.0) (425.9) (459.3) (583.6) (428.8)
Net gains/(losses) recognized in OCI before reclassifications 15.8 97.2 74.4 (9.0)        
Net (gains)/losses reclassified from AOCI to earnings (7.3) (42.6) (32.6) (90.9)        
Other comprehensive income/(loss) 8.5 54.6 41.8 (99.9)        
Other comprehensive income/(loss) 8.5 54.6 41.8 (99.9)        
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Noncontrolling Interest                
Accumulated Other Comprehensive Income (Loss) [Line Items]                
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Noncontrolling Interest 0.0   0.0 0.0        
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Including Noncontrolling Interest                
Accumulated Other Comprehensive Income (Loss) [Line Items]                
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest (0.7)   (0.7)          
Accumulated Net Investment Hedge Gain (Loss) Attributable to Noncontrolling Interest                
Accumulated Other Comprehensive Income (Loss) [Line Items]                
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Noncontrolling Interest 0.0   0.0 0.0        
AOCI, Accumulated Net Investment Hedge Gain (Loss) Including Portion Attributable to Noncontrolling Interest                
Accumulated Other Comprehensive Income (Loss) [Line Items]                
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest 367.1   367.1          
Accumulated Foreign Currency Adjustment Attributable to Noncontrolling Interest                
Accumulated Other Comprehensive Income (Loss) [Line Items]                
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Noncontrolling Interest 0.1   0.2 (0.3)        
Translation adjustment and other                
Accumulated Other Comprehensive Income (Loss) [Line Items]                
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest (839.6)   (839.6)          
AOCI Attributable to Noncontrolling Interest                
Accumulated Other Comprehensive Income (Loss) [Line Items]                
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Noncontrolling Interest 0.1   0.2 (0.3)        
AOCI Including Portion Attributable to Noncontrolling Interest                
Accumulated Other Comprehensive Income (Loss) [Line Items]                
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest (417.3)   (417.3)          
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent                
Accumulated Other Comprehensive Income (Loss) [Line Items]                
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest   67.3   67.3 $ 30.9 $ 40.9 $ 94.2 $ 70.5
Net gains/(losses) recognized in OCI before reclassifications 14.5 (4.9) 10.0 46.6        
Net (gains)/losses reclassified from AOCI to earnings 10.5 (22.0) 5.0 (49.8)        
Other comprehensive income/(loss) 25.0 $ (26.9) 15.0 (3.2)        
Accumulated Gain (Loss), Cash Flow Hedge, Including Noncontrolling Interest                
Accumulated Other Comprehensive Income (Loss) [Line Items]                
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest 55.9   55.9          
Accumulated Gain (Loss), Net, Cash Flow Hedge, Noncontrolling Interest                
Accumulated Other Comprehensive Income (Loss) [Line Items]                
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Noncontrolling Interest $ 0.0   $ 0.0 $ 0.0