Legal Proceedings (Details) $ in Millions		1 Months Ended				12 Months Ended
	Jan. 20, 2020 USD ($)	Jun. 28, 2020 USD ($)	Jan. 31, 2020 USD ($)	Oct. 31, 2019 USD ($)	Jul. 31, 2018 USD ($)	Jan. 03, 2021 USD ($) claimant patient	Oct. 31, 2020 USD ($)
Xarelto
Loss Contingencies [Line Items]
Number of plaintiffs						12,600
ASR
Loss Contingencies [Line Items]
Number of plaintiffs						560
Pinnacle Acetabular Cup System
Loss Contingencies [Line Items]
Number of plaintiffs						7,800
Risperdal
Loss Contingencies [Line Items]
Number of plaintiffs						9,300
Pelvic Meshes
Loss Contingencies [Line Items]
Number of plaintiffs						14,900
Invokana
Loss Contingencies [Line Items]
Number of plaintiffs						300
Physiomesh
Loss Contingencies [Line Items]
Number of plaintiffs						4,200
Talc
Loss Contingencies [Line Items]
Number of plaintiffs						25,000
Opiods
Loss Contingencies [Line Items]
Number of plaintiffs						3,100
Pending Litigation
Loss Contingencies [Line Items]
Loss Contingency, estimate of additional possible loss | $							$ 1,000.0
Loss contingency, estimate of possible loss | $				$ 4,000.0			$ 5,000.0
Judicial Ruling
Loss Contingencies [Line Items]
Loss contingency, damages awarded, value | $	$ 344.0		$ 6.8	$ 8,000.0
Oklahoma Attorney General VS. Johnson And Johnson And JPI [Member] | Settled Litigation
Loss Contingencies [Line Items]
Loss contingency, damages awarded, value | $						$ 465.0
Oklahoma Attorney General VS. Johnson And Johnson And JPI [Member] | Judicial Ruling
Loss Contingencies [Line Items]
Loss contingency, damages awarded, value | $						$ 572.0
DePuy ASR U.S. | Settled Litigation
Loss Contingencies [Line Items]
Number of patients in settlement | patient						10,000
Baby Powder | Judicial Ruling | Damages from Product Defects
Loss Contingencies [Line Items]
Loss contingency, damages sought, value | $		$ 2,100.0			$ 4,700.0	$ 2,500.0