Restructuring, Impairment, and Related Charges, Net - Summary of Restructuring Charges (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2022	Dec. 31, 2021
Restructuring Cost and Reserve [Line Items]
Severance and employee-related costs, net	$ 4	$ 1	$ 3	$ 14
Exit and other-related costs	25	16	68	66
Asset impairments and accelerated depreciation	2	1	13	128
Total	31	18	84	208
Operating Segments | U.S. Pharmaceutical
Restructuring Cost and Reserve [Line Items]
Severance and employee-related costs, net	0	0	3	2
Exit and other-related costs	1	3	2	7
Asset impairments and accelerated depreciation	1	0	4	16
Total	2	3	9	25
Operating Segments | Prescription Technology Solutions
Restructuring Cost and Reserve [Line Items]
Severance and employee-related costs, net	0	0	0	(1)
Exit and other-related costs	1	0	4	2
Asset impairments and accelerated depreciation	0	0	11	17
Total	1	0	15	18
Operating Segments | Medical-Surgical Solutions
Restructuring Cost and Reserve [Line Items]
Severance and employee-related costs, net	0	0	0	1
Exit and other-related costs	1	1	3	3
Asset impairments and accelerated depreciation	0	0	0	5
Total	1	1	3	9
Operating Segments | International
Restructuring Cost and Reserve [Line Items]
Severance and employee-related costs, net	0	0	2	10
Exit and other-related costs	7	6	15	21
Asset impairments and accelerated depreciation	1	(1)	2	35
Total	8	5	19	66
Corporate
Restructuring Cost and Reserve [Line Items]
Severance and employee-related costs, net	4	1	(2)	2
Exit and other-related costs	15	6	44	33
Asset impairments and accelerated depreciation	0	2	(4)	55
Total	$ 19	$ 9	$ 38	$ 90