XML 49 R38.htm IDEA: XBRL DOCUMENT v3.24.1
Retirement Plans - Schedule of Net Periodic Benefit Cost (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Feb. 29, 2024
Feb. 28, 2023
Feb. 29, 2024
Feb. 28, 2023
Pension Plans [Member] | U.S. Plans [Member]        
Net Periodic Benefit Cost        
Service cost $ 136 $ 162 $ 408 $ 488
Other retirement plans expense (income):        
Interest cost 341 304 1,022 913
Expected return on plan assets (400) (422) (1,199) (1,266)
Amortization of prior service credit and other (2) (1) (5) (5)
Other retirement plans (income) expense (61) (119) (182) (358)
Net periodic benefit cost 75 43 226 130
Pension Plans [Member] | International Pension Plans [Member]        
Net Periodic Benefit Cost        
Service cost 9 13 29 34
Other retirement plans expense (income):        
Interest cost 10 8 32 25
Expected return on plan assets (2) (3) (13) (11)
Amortization of prior service credit and other (2) (2)
Other retirement plans (income) expense 8 3 19 12
Net periodic benefit cost 17 16 48 46
Postretirement Healthcare Plans [Member]        
Net Periodic Benefit Cost        
Service cost 7 10 21 28
Other retirement plans expense (income):        
Interest cost 15 14 45 42
Expected return on plan assets
Amortization of prior service credit and other (2)   (2)  
Other retirement plans (income) expense 13 14 43 42
Net periodic benefit cost $ 20 $ 24 $ 64 $ 70