Intangible Assets - Reconciliation of Goodwill by Business Segment (Detail) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Goodwill [Roll Forward]
Goodwill, beginning balance	$ 23,886	$ 23,604
Goodwill, Acquired During Period	1,073	264
Goodwill, Purchase Accounting Adjustments	(1)	6
Goodwill, Foreign Currency Translation Gain (Loss)	(337)	12
Goodwill, ending balance	24,621	23,886
Medical
Goodwill [Roll Forward]
Goodwill, beginning balance	10,240	10,028
Goodwill, Acquired During Period	814	193
Goodwill, Purchase Accounting Adjustments	1	4
Goodwill, Foreign Currency Translation Gain (Loss)	(145)	15
Goodwill, ending balance	10,909	10,240
Life Sciences
Goodwill [Roll Forward]
Goodwill, beginning balance	836	837
Goodwill, Acquired During Period	71	0
Goodwill, Purchase Accounting Adjustments	0	0
Goodwill, Foreign Currency Translation Gain (Loss)	(20)	(1)
Goodwill, ending balance	888	836
Interventional
Goodwill [Roll Forward]
Goodwill, beginning balance	12,810	12,739
Goodwill, Acquired During Period	188	72
Goodwill, Purchase Accounting Adjustments	(2)	1
Goodwill, Foreign Currency Translation Gain (Loss)	(171)	(2)
Goodwill, ending balance	$ 12,824	$ 12,810