Segment Information (Assets by Reportable Segment) (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Dec. 31, 2021	Dec. 31, 2021	Jun. 30, 2021
Segment Reporting Information [Line Items]
Total assets	$ 43,680	$ 43,680	$ 44,453
Total assets held for sale	0	0	1,101
Goodwill, Impairment Loss		1,307
Medical Unit
Segment Reporting Information [Line Items]
Goodwill, Impairment Loss	1,300
Pharmaceutical
Segment Reporting Information [Line Items]
Goodwill, Impairment Loss		0
Medical
Segment Reporting Information [Line Items]
Goodwill, Impairment Loss	1,307
Medical | Cordis Divestiture
Segment Reporting Information [Line Items]
Total assets held for sale			1,100
Operating Segments | Pharmaceutical
Segment Reporting Information [Line Items]
Total assets	24,427	24,427	23,624
Operating Segments | Medical
Segment Reporting Information [Line Items]
Total assets	12,737	12,737	15,408
Corporate
Segment Reporting Information [Line Items]
Total assets	$ 6,516	$ 6,516	$ 5,421