v3.26.1
Retirement Benefits - Schedule of Change in Benefit Obligation and Plan Assets (Details) - USD ($)
$ in Millions
 12 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2024
Change in plan assets      
Funded status $ 5,622 $ 5,646  
Amounts recognized on the Consolidated Balance Sheets      
Pensions and other postretirement benefits (224) (267)  
Pension Plan | United States      
Change in benefit obligation      
Benefit obligation at beginning of year 3,615 3,723  
Service cost 25 28 $ 29
Interest cost 167 184 190
Acquisition 0 0  
Actuarial gain (102) (12)  
Benefits paid (260) (254)  
Settlements 0 (55)  
Plan amendments 0 1  
Foreign currency translation and other (6) 0  
Benefit obligation at end of year 3,439 3,615 3,723
Change in plan assets      
Fair value of plan assets at beginning of year 3,463 3,363  
Actual return on plan assets 282 347  
Acquisition 0 0  
Employer contributions 9 62  
Benefits paid (260) (254)  
Settlements 0 (55)  
Foreign currency translation and other 0 0  
Fair value of plan assets at end of year 3,494 3,463 3,363
Funded status 55 (152)  
Amounts recognized on the Consolidated Balance Sheets      
Other long-term assets 176 0  
Other current liabilities (10) (11)  
Pensions and other postretirement benefits (111) (141)  
Net amount recognized 55 (152)  
Pre-tax amounts recognized in Accumulated Other Comprehensive Loss      
Net actuarial loss (gain) 34 191  
Prior service cost 15 18  
Net amount recognized 49 209  
Pension Plan | Non-U.S. Pension Benefits      
Change in benefit obligation      
Benefit obligation at beginning of year 1,885 1,817  
Service cost 22 22 22
Interest cost 72 76 80
Acquisition 14 0  
Actuarial gain (31) (104)  
Benefits paid (86) (88)  
Settlements (24) (6)  
Plan amendments 0 0  
Foreign currency translation and other (75) 168  
Benefit obligation at end of year 1,777 1,885 1,817
Change in plan assets      
Fair value of plan assets at beginning of year 2,183 2,003  
Actual return on plan assets 81 0  
Acquisition 14 0  
Employer contributions 36 87  
Benefits paid (86) (88)  
Settlements (24) (6)  
Foreign currency translation and other (76) 187  
Fair value of plan assets at end of year 2,128 2,183 2,003
Funded status 351 298  
Amounts recognized on the Consolidated Balance Sheets      
Other long-term assets 379 346  
Other current liabilities 0 (1)  
Pensions and other postretirement benefits (28) (47)  
Net amount recognized 351 298  
Pre-tax amounts recognized in Accumulated Other Comprehensive Loss      
Net actuarial loss (gain) 193 230  
Prior service cost 1 2  
Net amount recognized 194 232  
Other Postretirement Benefits      
Change in benefit obligation      
Benefit obligation at beginning of year 63 71  
Service cost 0 0 0
Interest cost 3 4 4
Acquisition 0 0  
Actuarial gain (10) (6)  
Benefits paid (5) (6)  
Settlements 0 0  
Plan amendments 0 0  
Foreign currency translation and other (1) 0  
Benefit obligation at end of year 50 63 71
Change in plan assets      
Fair value of plan assets at beginning of year 0 0  
Actual return on plan assets 0 0  
Acquisition 0 0  
Employer contributions 5 6  
Benefits paid (5) (6)  
Settlements 0 0  
Foreign currency translation and other 0 0  
Fair value of plan assets at end of year 0 0 $ 0
Funded status (50) (63)  
Amounts recognized on the Consolidated Balance Sheets      
Other long-term assets 0 0  
Other current liabilities (5) (6)  
Pensions and other postretirement benefits (45) (57)  
Net amount recognized (50) (63)  
Pre-tax amounts recognized in Accumulated Other Comprehensive Loss      
Net actuarial loss (gain) (33) (25)  
Prior service cost 0 0  
Net amount recognized $ (33) $ (25)