Segment Information (Assets by Reportable Segment) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Dec. 31, 2022	Sep. 30, 2022	Mar. 31, 2023	Jun. 30, 2022
Segment Reporting Information [Line Items]
Total assets			$ 43,377	$ 43,878
Goodwill impairment			863
Medical Unit
Segment Reporting Information [Line Items]
Goodwill impairment			863
Pharmaceutical
Segment Reporting Information [Line Items]
Goodwill impairment			0
Medical
Segment Reporting Information [Line Items]
Goodwill impairment	$ 709	$ 154	863
Operating Segments | Pharmaceutical
Segment Reporting Information [Line Items]
Total assets			27,954	26,409
Operating Segments | Medical
Segment Reporting Information [Line Items]
Total assets			10,544	11,632
Corporate
Segment Reporting Information [Line Items]
Total assets			$ 4,879	$ 5,837