Goodwill and Other Intangible Assets (Schedule of Goodwill by Reportable Segment) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Mar. 31, 2024	Sep. 30, 2023	Mar. 31, 2025	Mar. 31, 2024
Goodwill [Roll Forward]
Beginning balance			$ 4,725
Goodwill acquired, net of purchase price adjustments			4,181
Ending balance			8,906
Pharmaceutical and Specialty Solutions
Goodwill [Roll Forward]
Beginning balance			3,555
Goodwill acquired, net of purchase price adjustments			4,181
Ending balance			7,736
Global Medical Products and Distribution
Goodwill [Roll Forward]
Beginning balance			0
Goodwill acquired, net of purchase price adjustments			0
Ending balance			0
Goodwill impairment	$ 90	$ 585		$ 675
Other Segments
Goodwill [Roll Forward]
Beginning balance			1,170
Goodwill acquired, net of purchase price adjustments			0
Ending balance			$ 1,170