Commitments and Contingencies (Details) $ in Millions				1 Months Ended	3 Months Ended	12 Months Ended
	Aug. 01, 2018 claim	Dec. 14, 2011 patent	Jun. 29, 2007	May 31, 2017 claim	Jul. 27, 2018 USD ($) landfill subsidiary manufacturer claim	Apr. 29, 2016 USD ($) claim	Apr. 27, 2018 USD ($)
Loss Contingencies [Line Items]
Accrued certain litigation charges | $					$ 1,000		$ 900
Covidien plc
Loss Contingencies [Line Items]
Tax sharing percentage, parent			42.00%
Tax sharing percentage, former parent			27.00%
Tax sharing percentage, former affiliate			31.00%
Orrington, Maine chemical manufacturing facility
Loss Contingencies [Line Items]
Number of landfills requiring removal | landfill					2
Number of landfills requiring capping | landfill					3
Penobscot River and Bay remediation | Minimum
Loss Contingencies [Line Items]
Cost estimate for potential remediation | $					$ 25
Penobscot River and Bay remediation | Maximum
Loss Contingencies [Line Items]
Cost estimate for potential remediation | $					$ 235
INFUSE | Product liability litigation
Loss Contingencies [Line Items]
Number of pending claims | claim					6,000
Pelvic mesh | Product liability litigation
Loss Contingencies [Line Items]
Number of pending claims | claim					15,800
Number of subsidiaries | subsidiary					2
Number of manufacturers | manufacturer					1
Settlement receivable | $						$ 121
Number of claims settled | claim				5,000		11,000
Pelvic mesh | Product liability litigation | Subsequent Event
Loss Contingencies [Line Items]
Number of claims settled | claim	14,400
Ethicon
Loss Contingencies [Line Items]
Patents infringed | patent		1
Patents not infringed upon | patent		6