XML 34 R20.htm IDEA: XBRL DOCUMENT v3.10.0.1
Summary of Significant Accounting Policies (Recently Adopted Accounting Pronouncements) (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jul. 29, 2018
Jul. 30, 2017
Jul. 29, 2018
Jul. 30, 2017
Jan. 29, 2018
Jan. 28, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]            
Receivables, net $ 2,164   $ 2,164     $ 1,952
Other current assets 1,104   1,104     638
Other accrued expenses 2,542   2,542     $ 2,224
Net sales 30,463 $ 28,108 55,410 $ 51,995    
Cost of sales 20,098 18,647 36,428 34,380    
Gross profit 10,365 9,461 18,982 17,615    
Selling, general and administrative 5,004 $ 4,549 9,783 $ 8,910    
Accounting Standards Update 2014-09 [Member]            
New Accounting Pronouncements or Change in Accounting Principle [Line Items]            
Cumulative effect of change on equity         $ 75  
Accounting Standards Update 2014-09 [Member] | Difference between Revenue Guidance in Effect before and after Topic 606 [Member]            
New Accounting Pronouncements or Change in Accounting Principle [Line Items]            
Receivables, net (46)   (46)      
Other current assets 272   272      
Other accrued expenses 226   226      
Net sales 33   66      
Cost of sales (119)   (217)      
Gross profit 152   283      
Selling, general and administrative 152   283      
Accounting Standards Update 2014-09 [Member] | Calculated under Revenue Guidance in Effect before Topic 606 [Member]            
New Accounting Pronouncements or Change in Accounting Principle [Line Items]            
Receivables, net 2,210   2,210      
Other current assets 832   832      
Other accrued expenses 2,316   2,316      
Net sales 30,430   55,344      
Cost of sales 20,217   36,645      
Gross profit 10,213   18,699      
Selling, general and administrative $ 4,852   $ 9,500