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Contingencies and Commitments (Narrative) (Details)
$ in Millions
1 Months Ended 12 Months Ended
Mar. 19, 2019
USD ($)
Jul. 12, 2017
USD ($)
Jun. 30, 2015
USD ($)
Dec. 31, 2013
USD ($)
Dec. 31, 2010
patent
Mar. 31, 2019
USD ($)
Minimum | Voluntary recall            
Loss Contingencies [Line Items]            
Estimate of possible loss           $ 250
Maximum | Voluntary recall            
Loss Contingencies [Line Items]            
Estimate of possible loss           $ 470
Zimmer Product Infringement            
Loss Contingencies [Line Items]            
Number of patents infringed upon | patent         3  
Value of damages awarded   $ 164   $ 76    
Gain (loss) related to litigation settlement     $ 54      
Proceeds from legal settlements $ 167