Legal Proceedings (Details) $ in Millions	1 Months Ended			3 Months Ended	6 Months Ended
	Jun. 28, 2020 USD ($) claimant patient	Jan. 31, 2020 USD ($)	Jul. 31, 2018 USD ($)	Dec. 29, 2019 USD ($) claimant	Jun. 28, 2020 USD ($) claimant patient	Oct. 31, 2019 USD ($)
ASR
Legal Proceeding (Textuals)
Product Liability Contingency Number Of Claimants	800				800
Pinnacle Acetabular Cup System
Legal Proceeding (Textuals)
Product Liability Contingency Number Of Claimants	8,600				8,600
Pelvic Meshes
Legal Proceeding (Textuals)
Product Liability Contingency Number Of Claimants	15,600				15,600
Risperdal
Legal Proceeding (Textuals)
Product Liability Contingency Number Of Claimants	10,600				10,600
XARELTO®
Legal Proceeding (Textuals)
Product Liability Contingency Number Of Claimants	21,000				21,000
Talc
Legal Proceeding (Textuals)
Product Liability Contingency Number Of Claimants	20,600				20,600
Invokana
Legal Proceeding (Textuals)
Product Liability Contingency Number Of Claimants	300				300
Physiomesh
Legal Proceeding (Textuals)
Product Liability Contingency Number Of Claimants	3,700				3,700
Opioid
Legal Proceeding (Textuals)
Product Liability Contingency Number Of Claimants				2,900
Judicial Ruling
Legal Proceeding (Textuals)
Damages awarded | $		$ 6.8		$ 8,000.0	$ 344.0
Pending Litigation
Legal Proceeding (Textuals)
Loss Contingency, Estimate of Possible Loss | $						$ 4,000.0
DePuy ASR U.S. | settled litigation
Legal Proceeding (Textuals)
Number of patients in settlement | patient	10,000				10,000
Baby Powder
Legal Proceeding (Textuals)
Previous damages awarded and revised | $			$ 4,700.0
Baby Powder | Judicial Ruling
Legal Proceeding (Textuals)
Damages awarded | $	$ 2,100.0
Oklahoma Attorney General vs. Johnson & Johnson and JPI | settled litigation
Legal Proceeding (Textuals)
Damages awarded | $					$ 465.0
Oklahoma Attorney General vs. Johnson & Johnson and JPI | Judicial Ruling
Legal Proceeding (Textuals)
Damages awarded | $					$ 572.0