v3.26.1
Shareholders' Equity (Changes in the Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($)
$ / shares in Units, $ in Millions
 3 Months Ended 12 Months Ended 36 Months Ended
Jun. 26, 2026
Apr. 20, 2026
Dec. 15, 2025
Oct. 31, 2025
Mar. 11, 2025
Oct. 30, 2024
Dec. 13, 2023
Oct. 31, 2023
Jun. 30, 2026
Mar. 31, 2026
Dec. 31, 2025
Sep. 30, 2025
Mar. 31, 2025
Sep. 30, 2024
Dec. 31, 2023
Sep. 30, 2023
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2023
AOCI Attributable to Parent, Net of Tax [Roll Forward]                                        
Balance at beginning of period                       $ (2,634)   $ (3,212)   $ (2,957) $ (2,634) $ (3,212) $ (2,957)  
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent                                 (10) 12 (16)  
Balance at end of period                 $ (2,724)               (2,724) (2,634) (3,212) $ (2,957)
Other Comprehensive Income (Loss), Tax                                 (9) 6    
Share repurchase program activity                                 1,358 765 750  
$250 million share repurchase program                                        
AOCI Attributable to Parent, Net of Tax [Roll Forward]                                        
Share repurchase program activity                   $ 250         $ 250          
$375 million share repurchase program                                        
AOCI Attributable to Parent, Net of Tax [Roll Forward]                                        
Share repurchase program activity                     $ 375 375 $ 375 375            
Share Repurchase Programs                                        
AOCI Attributable to Parent, Net of Tax [Roll Forward]                                        
Share Repurchase Program, Excise Tax                                 8 15    
$500 million share repurchase program [Member]                                        
AOCI Attributable to Parent, Net of Tax [Roll Forward]                                        
Share repurchase program activity                               500        
$350 million share repurchase program                                        
AOCI Attributable to Parent, Net of Tax [Roll Forward]                                        
Share repurchase program activity                 350                      
Foreign Currency Translation Adjustments and Other                                        
AOCI Attributable to Parent, Net of Tax [Roll Forward]                                        
Balance at beginning of period                       (141)   (138)     (141) (138)    
Other comprehensive income/(loss), before reclassifications                                 1 (3)    
Amounts reclassified to earnings                                 0 0    
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent                                 1 (3)    
Balance at end of period                 (140)               (140) (141) (138)  
Accumulated Gain (Loss), Net, Cash Flow Hedge, Noncontrolling Interest                                        
AOCI Attributable to Parent, Net of Tax [Roll Forward]                                        
Balance at beginning of period                       (14)   (29)     (14) (29)    
Other comprehensive income/(loss), before reclassifications                                 5 13    
Amounts reclassified to earnings                                 (16) 2    
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent                                 (11) 15    
Balance at end of period                 (25)               (25) (14) (29)  
AOCI Including Portion Attributable to Noncontrolling Interest [Member]                                        
AOCI Attributable to Parent, Net of Tax [Roll Forward]                                        
Balance at end of period                 (165)               (165)      
Accumulated Other Comprehensive Loss                                        
AOCI Attributable to Parent, Net of Tax [Roll Forward]                                        
Balance at beginning of period                       $ (155)   $ (167)   $ (151) (155) (167) (151)  
Other comprehensive income/(loss), before reclassifications                                 6 10    
Amounts reclassified to earnings                                 (16) 2    
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent                                 (10) 12 (16)  
Balance at end of period                 $ (165)               $ (165) $ (155) $ (167) (151)
Treasury Shares                                        
AOCI Attributable to Parent, Net of Tax [Roll Forward]                                        
Share repurchase program activity                                       $ 2,900
Treasury Stock, Shares, Acquired                                 7,000,000 6,000,000 9,000,000  
Treasury Shares | $250 million share repurchase program                                        
AOCI Attributable to Parent, Net of Tax [Roll Forward]                                        
Treasury shares acquired, average price per share (in usd per share)   $ 209.55         $ 103.67     $ 215.42         $ 101.66          
Treasury Shares | $375 million share repurchase program                                        
AOCI Attributable to Parent, Net of Tax [Roll Forward]                                        
Treasury shares acquired, average price per share (in usd per share)     $ 200.00 $ 151.88 $ 125.87 $ 110.10         $ 190.22 $ 148.12 $ 125.33 $ 109.65            
Treasury Shares | $350 million share repurchase program                                        
AOCI Attributable to Parent, Net of Tax [Roll Forward]                                        
Treasury shares acquired, average price per share (in usd per share) $ 206.37               $ 182.50                      
Treasury Shares | $500 million share repurchase program [Member]                                        
AOCI Attributable to Parent, Net of Tax [Roll Forward]                                        
Treasury shares acquired, average price per share (in usd per share)               $ 88.22               $ 90.57        
Treasury Shares | $250 million share repurchase program                                        
AOCI Attributable to Parent, Net of Tax [Roll Forward]                                        
Treasury Stock, Shares, Acquired   300,000         400,000     900,000         2,000,000.0          
Treasury Shares | $375 million share repurchase program                                        
AOCI Attributable to Parent, Net of Tax [Roll Forward]                                        
Treasury Stock, Shares, Acquired     300,000 400,000 600,000 700,000         1,600,000 2,000,000.0 2,400,000 2,700,000            
Treasury Shares | $500 million share repurchase program [Member]                                        
AOCI Attributable to Parent, Net of Tax [Roll Forward]                                        
Treasury Stock, Shares, Acquired               1,300,000               4,400,000        
Treasury Shares | $350 million share repurchase program                                        
AOCI Attributable to Parent, Net of Tax [Roll Forward]                                        
Treasury Stock, Shares, Acquired 200,000               1,500,000