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Acquisition (Details) - USD ($)
$ in Millions
6 Months Ended
May 09, 2019
Aug. 03, 2019
Feb. 02, 2019
Aug. 04, 2018
Business Acquisition [Line Items]        
Total purchase price, net of cash acquired   $ 125    
Goodwill   965 $ 915 $ 425
Critical Signal Technologies, Inc. [Member]        
Business Acquisition [Line Items]        
Total purchase price, net of cash acquired $ 125      
Goodwill   50    
Transaction costs   $ 3    
Customer Relationships [Member] | Critical Signal Technologies, Inc. [Member]        
Business Acquisition [Line Items]        
Intangible assets $ 83      
Amortization period   15 years