Pension and Other Benefit Plans (Tables)

9 Months Ended

Dec. 31, 2021

Retirement Benefits [Abstract]

Schedule of Defined Benefit Plans Disclosures

The components of net periodic pension income were:

	Three Months Ended				Nine Months Ended
(in millions)	December 31, 2021		December 31, 2020		December 31, 2021		December 31, 2020
Service cost	$	22	$	23	$	67	$	68
Interest cost	50		62		153		181
Expected return on assets	(139)		(163)		(432)		(477)
Amortization of prior service costs	(2)		(2)		(6)		(6)
Contractual termination benefit	(3)		—		(2)		3
Curtailment gain	—		—		—		(9)
Recognition of actuarial loss	7		—		7		11
Net periodic pension income	$	(65)	$	(80)	$	(213)	$	(229)