v3.10.0.1
Acquisitions, Divestitures, Assets and Liabilities Held for Sale, Licensing Arrangements, Research and Development and Collaborative Arrangements, Equity-Method Investments and Privately Held Investment - GSK (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2019
Liabilities Held for Sale        
Total Consumer liabilities held for sale [1] $ 1,890 $ 0    
Disposal Group, Held-for-sale, Not Discontinued Operations [Member]        
Assets Held for Sale        
Assets held for sale 9,725 12    
Other assets held for sale [2] 46 12    
Consumer Healthcare [Member] | Disposal Group, Held-for-sale, Not Discontinued Operations [Member]        
Assets Held for Sale        
Cash and cash equivalents 32 0    
Trade accounts receivable, less allowance for doubtful accounts 532 0    
Inventories 538 0    
Other current assets 56 0    
PP&E 675 0    
Identifiable intangible assets, less accumulated amortization 5,763 0    
Goodwill 1,972 0    
Noncurrent deferred tax assets and other noncurrent tax assets 54 0    
Other noncurrent assets 57 0    
Assets held for sale 9,678 0    
Liabilities Held for Sale        
Trade accounts payable 406 0    
Income taxes payable 39 0    
Accrued compensation and related items 93 0    
Other current liabilities 353 0    
Pension benefit obligations, net 39 0    
Postretirement benefit obligations, net 33 0    
Noncurrent deferred tax liabilities 870 0    
Other noncurrent liabilities 56 0    
Total Consumer liabilities held for sale 1,890 0    
Pre-tax income attributable to disposal group $ 977 $ 863 $ 780  
GSK Consumer Healthcare [Member] | Forecast [Member]        
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]        
Equity method investment, ownership percentage       32.00%
GSK [Member] | GSK Consumer Healthcare [Member] | Forecast [Member]        
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]        
Equity method investment, ownership percentage       68.00%
[1] Amounts may not add due to rounding.
[2] Other assets held for sale consist of PP&E.