Contingencies - Additional Information (Detail) $ in Millions	1 Months Ended	3 Months Ended		6 Months Ended
	Apr. 30, 2018 USD ($)	Sep. 30, 2019 USD ($)	Mar. 31, 2019 USD ($)	Mar. 31, 2020 USD ($)	Mar. 31, 2019 USD ($)
Loss Contingencies [Line Items]
Loss contingency accrual		$ 2,500		$ 2,300
Qualified settlement funds		53		87
Loss contingency, receivable		150		$ 117
Other Operating Income (Expense)
Loss Contingencies [Line Items]
Product liability accrual, period expense		$ 582	$ 331		$ 331
Hernia Product Claims
Loss Contingencies [Line Items]
Pending claims				16,815
Womens Health Product Claims
Loss Contingencies [Line Items]
Pending claims				580
Claims lacking sufficient information				1,005
PaymentstoSupplier				$ 141
Number of claims in settlement agreement				15,220
Damages awarded	$ 68
Womens Health Product Claims | Compensatory
Loss Contingencies [Line Items]
Damages awarded	33
Womens Health Product Claims | Punitive
Loss Contingencies [Line Items]
Damages awarded	$ 35
Filter Product Claims
Loss Contingencies [Line Items]
Pending claims				1,785
Loss Contingency, Claims Settled, Number				7,300