v3.20.4
Restructuring Charges and Other Costs Associated with Acquisitions and Cost-Reduction/Productivity Initiatives - Narrative (Detail) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Restructuring Cost and Reserve [Line Items]      
Total costs incurred $ 896 $ 820 $ 1,426
Business Integration Costs [Member]      
Restructuring Cost and Reserve [Line Items]      
Restructuring charges incurred   (197)  
Focused Company Plan [Member]      
Restructuring Cost and Reserve [Line Items]      
Expected cost 1,600    
Restructuring cost incurred to date 900    
Restructuring charges incurred   87  
Focused Company Plan [Member] | Manufacturing Optimization [Member]      
Restructuring Cost and Reserve [Line Items]      
Expected cost $ 500    
Percentage of non-cash restructuring charges expected 20.00%    
2017-2019 and Organizing for Growth [Member]      
Restructuring Cost and Reserve [Line Items]      
Restructuring charges incurred   548  
Array [Member] | Business Integration Costs [Member]      
Restructuring Cost and Reserve [Line Items]      
Restructuring charges incurred   288  
Hospira [Member] | Business Integration Costs [Member]      
Restructuring Cost and Reserve [Line Items]      
Restructuring charges incurred   $ 94