v3.26.1
Accumulated Other Comprehensive Income/(Loss) - Statement of AOCI (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Mar. 31, 2026
Mar. 31, 2025
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]        
Beginning balance $ 53,317 $ 51,443 $ 52,284 $ 50,559
Other comprehensive income/(loss), before tax:        
OCI before reclassifications     (58)  
Amounts reclassified to the Consolidated Statement of Earnings     15  
Total other comprehensive income/(loss), before tax     (43)  
Tax effect     (128)  
TOTAL OTHER COMPREHENSIVE INCOME/(LOSS), NET OF TAX (198) 330 (171) 590
Less: OCI attributable to noncontrolling interests, net of tax     (16)  
Ending balance 54,731 $ 52,545 54,731 $ 52,545
Total AOCI        
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]        
Beginning balance     (12,143)  
Other comprehensive income/(loss), before tax:        
Ending balance (12,298)   (12,298)  
Investment Securities        
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]        
Beginning balance     9  
Other comprehensive income/(loss), before tax:        
OCI before reclassifications     2  
Amounts reclassified to the Consolidated Statement of Earnings     0  
Total other comprehensive income/(loss), before tax     2  
Tax effect     (1)  
TOTAL OTHER COMPREHENSIVE INCOME/(LOSS), NET OF TAX     1  
Less: OCI attributable to noncontrolling interests, net of tax     0  
Ending balance 10   10  
Postretirement Benefit Plans        
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]        
Beginning balance     (777)  
Other comprehensive income/(loss), before tax:        
OCI before reclassifications     4  
Amounts reclassified to the Consolidated Statement of Earnings     15  
Total other comprehensive income/(loss), before tax     18  
Tax effect     (4)  
TOTAL OTHER COMPREHENSIVE INCOME/(LOSS), NET OF TAX     14  
Less: OCI attributable to noncontrolling interests, net of tax     0  
Ending balance (763)   (763)  
Foreign Currency Translation        
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]        
Beginning balance     (11,375)  
Other comprehensive income/(loss), before tax:        
OCI before reclassifications     (63)  
Amounts reclassified to the Consolidated Statement of Earnings     0  
Total other comprehensive income/(loss), before tax     (63)  
Tax effect     (123)  
TOTAL OTHER COMPREHENSIVE INCOME/(LOSS), NET OF TAX     (186)  
Less: OCI attributable to noncontrolling interests, net of tax     (16)  
Ending balance $ (11,545)   $ (11,545)