Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies Other Details (Details)

v3.8.0.1
Summary of Significant Accounting Policies Other Details (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Jun. 15, 2016
Finite-Lived Intangible Assets [Line Items]        
Interest rate swap arrangements (note 8) $ 2 $ 2    
Cash Equivalents, at Carrying Value 42 113    
Customer returns 1,811 1,815 $ 1,939  
Advertising Expense 86 $ 84 $ 87  
Derivative, notional amount       $ 125
CNR Home Shopping Co., Ltd.        
Finite-Lived Intangible Assets [Line Items]        
Payments to Acquire Businesses, Gross $ 40      
Equity method investment, ownership percentage 49.00%