Goodwill and Intangible Assets, Net - Schedule of Changes in the Carrying Amount of Goodwill (Details) $ in Millions	9 Months Ended
	Dec. 31, 2022 USD ($)
Goodwill [Roll Forward]
Beginning balance	$ 9,451
Goodwill acquired	625
Foreign currency translation adjustments, net	(130)
Other adjustments	(12)
Ending balance	9,934
U.S. Pharmaceutical
Goodwill [Roll Forward]
Beginning balance	3,923
Goodwill acquired	160
Foreign currency translation adjustments, net	(21)
Other adjustments	(12)
Ending balance	4,050
Prescription Technology Solutions
Goodwill [Roll Forward]
Beginning balance	1,542
Goodwill acquired	463
Foreign currency translation adjustments, net	0
Other adjustments	0
Ending balance	2,005
Medical-Surgical Solutions
Goodwill [Roll Forward]
Beginning balance	2,453
Goodwill acquired	0
Foreign currency translation adjustments, net	0
Other adjustments	0
Ending balance	2,453
International
Goodwill [Roll Forward]
Beginning balance	1,533
Goodwill acquired	2
Foreign currency translation adjustments, net	(109)
Other adjustments	0
Ending balance	$ 1,426