Quarterly report pursuant to Section 13 or 15(d)

Recent Accounting Pronouncements (Revenue Recognition) (Details)

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Recent Accounting Pronouncements (Revenue Recognition) (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Jan. 01, 2018
Dec. 31, 2017
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]        
Inventories $ 1,510   $ 1,384 $ 1,411
Other current assets 212   114 125
Other current liabilities 127   123 169
Accrued liabilities 968     1,125
Deferred income tax liabilities 2,090   2,502 2,500
Retained earnings 5,853   $ 9,074 9,068
Net revenue 3,230      
Cost of retail sales 2,093 $ 1,505    
Selling, general and administrative expenses, including stock based compensation 452 250    
Operating 228 151    
Income tax (expense) benefit (29) (84)    
Net income 384 $ 507    
Other Current Assets        
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]        
Inventory expected return current 91      
Other Current Liabilities        
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]        
Sales return liability current 204      
Before Adoption | ASU 2014-09        
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]        
Net revenue 3,165      
Cost of retail sales 2,108      
Selling, general and administrative expenses, including stock based compensation 480      
Operating 233      
Income tax (expense) benefit (26)      
Net income 370      
Adjustment | ASU 2014-09        
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]        
Inventories       (27)
Other current assets       (11)
Other current liabilities       (46)
Deferred income tax liabilities       2
Retained earnings       $ 6
Net revenue (65)      
Cost of retail sales 15      
Selling, general and administrative expenses, including stock based compensation 28      
Operating 5      
Income tax (expense) benefit 3      
Net income $ (14)