Segment Information (Assets by Reportable Segment) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Mar. 31, 2022	Dec. 31, 2021	Mar. 31, 2022	Jun. 30, 2021
Segment Reporting Information [Line Items]
Total assets	$ 42,111		$ 42,111	$ 44,453
Total assets held for sale	0		0	1,101
Goodwill, Impairment Loss			1,781
Medical Unit
Segment Reporting Information [Line Items]
Goodwill, Impairment Loss	474	$ 1,300	1,800
Pharmaceutical
Segment Reporting Information [Line Items]
Goodwill, Impairment Loss			0
Medical
Segment Reporting Information [Line Items]
Goodwill, Impairment Loss			1,781
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	25,470		25,470	23,624
Operating Segments | Medical
Segment Reporting Information [Line Items]
Total assets	12,166		12,166	15,408
Corporate
Segment Reporting Information [Line Items]
Total assets	$ 4,475		$ 4,475	$ 5,421