XML 58 R46.htm IDEA: XBRL DOCUMENT v3.10.0.1
Acquisitions - Narrative (Details) - USD ($)
3 Months Ended 6 Months Ended
Jan. 25, 2019
Oct. 26, 2018
Oct. 27, 2017
Oct. 26, 2018
Oct. 27, 2017
Jul. 27, 2018
Apr. 27, 2018
Jul. 28, 2017
Apr. 28, 2017
Business Acquisition [Line Items]                  
Approximate payments expected to acquire business, net of existing stake and cash acquired       $ 119,000,000 $ 76,000,000        
Fair value of contingent consideration   $ 203,000,000 $ 190,000,000 203,000,000 190,000,000 $ 208,000,000 $ 173,000,000 $ 242,000,000 $ 246,000,000
Other liabilities                  
Business Acquisition [Line Items]                  
Fair value of contingent consideration   79,000,000   79,000,000     65,000,000    
Other accrued expenses                  
Business Acquisition [Line Items]                  
Fair value of contingent consideration   124,000,000   124,000,000     $ 108,000,000    
Mazor Robotics | Forecast                  
Business Acquisition [Line Items]                  
Approximate payments expected to acquire business $ 1,600,000,000                
Approximate payments expected to acquire business, net of existing stake and cash acquired $ 1,300,000,000                
IPR&D                  
Business Acquisition [Line Items]                  
In-process research and development acquired in connection with asset acquisition   $ 15,000,000 $ 0 $ 15,000,000 $ 0