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Pension and Other Benefit Plans (Tables)
6 Months Ended
Sep. 30, 2022
Retirement Benefits [Abstract]  
Schedule of Defined Benefit Plans Disclosures
The components of net periodic pension income were:
Three Months EndedSix Months Ended
(in millions)September 30, 2022September 30, 2021September 30, 2022September 30, 2021
Service cost$18 $22 $37 $45 
Interest cost63 51 130 103 
Expected return on assets(122)(146)(254)(293)
Amortization of prior service costs(2)(2)(4)(4)
Contractual termination benefit— — 
Recognition of actuarial loss— — 
Net periodic pension income$(42)$(74)$(90)$(148)