Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies Other Details (Details)

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Summary of Significant Accounting Policies Other Details (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items]      
Customer returns $ 2,138 $ 2,213 $ 1,811
Advertising Expense 153 138 $ 86
Cash Equivalents, at Carrying Value 272 267  
CNR Home Shopping Co., Ltd.      
Finite-Lived Intangible Assets [Line Items]      
Payments to Acquire Interest in Subsidiaries and Affiliates $ 40 $ 38  
Equity method investment, ownership percentage 49.00%