Quarterly report pursuant to Section 13 or 15(d)

Guarantor/Non-Guarantor Subsidiary Financial Information (Statement of Cash Flow) (Details)

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Guarantor/Non-Guarantor Subsidiary Financial Information (Statement of Cash Flow) (Details) - USD ($)
$ in Millions
 9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Dec. 31, 2017
Dec. 31, 2016
Operating activities:        
Net cash provided by operating activities $ 940 $ 907    
Investing activities:        
Capital expenditures (125) (83)    
Expenditures for television distribution rights (80) (35)    
Changes in other noncurrent assets 1 (2)    
Intercompany investing activities 0 0    
Net cash used in investing activities (204) (120)    
Financing activities:        
Principal payments of debt and capital lease obligations (2,285) (1,791)    
Principal borrowings of debt from senior secured credit facility 1,451 1,574    
Proceeds from Issuance of Secured Debt 225 0    
Payments of Debt Issuance Costs (8) 0    
Capital contributions received from Qurate Retail, Inc. 340 0    
Dividends paid to Qurate Retail, Inc. (297) (491)    
Dividends paid to noncontrolling interest (23) (22)    
Other financing activities (10) (10)    
Net short-term intercompany debt (repayments) borrowings 0 0    
Other intercompany financing activities 0 0    
Net cash used in financing activities (607) (740)    
Effect of foreign exchange rate changes on cash, cash equivalents and restricted cash (2) 13    
Net increase in cash, cash equivalents and restricted cash 127 60    
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents 395 354 $ 268 $ 294
Parent issuer- QVC, Inc.        
Operating activities:        
Net cash provided by operating activities 484 550    
Investing activities:        
Capital expenditures (68) (54)    
Expenditures for television distribution rights 0 0    
Changes in other noncurrent assets 2 (1)    
Intercompany investing activities 233 385    
Net cash used in investing activities 167 330    
Financing activities:        
Principal payments of debt and capital lease obligations (2,277) (1,785)    
Principal borrowings of debt from senior secured credit facility 1,451 1,574    
Proceeds from Issuance of Secured Debt 225      
Payments of Debt Issuance Costs (8)      
Capital contributions received from Qurate Retail, Inc. 340      
Dividends paid to Qurate Retail, Inc. (297) (491)    
Dividends paid to noncontrolling interest 0 0    
Other financing activities (10) (10)    
Net short-term intercompany debt (repayments) borrowings (15) (353)    
Other intercompany financing activities (17) 186    
Net cash used in financing activities (608) (879)    
Effect of foreign exchange rate changes on cash, cash equivalents and restricted cash 0 0    
Net increase in cash, cash equivalents and restricted cash 43 1    
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents 50 11 7 10
Combined subsidiary guarantors        
Operating activities:        
Net cash provided by operating activities 394 306    
Investing activities:        
Capital expenditures (3) (2)    
Expenditures for television distribution rights (79) (35)    
Changes in other noncurrent assets 0 0    
Intercompany investing activities (552) (1,087)    
Net cash used in investing activities (634) (1,124)    
Financing activities:        
Principal payments of debt and capital lease obligations 0 0    
Principal borrowings of debt from senior secured credit facility 0 0    
Proceeds from Issuance of Secured Debt 0      
Payments of Debt Issuance Costs 0      
Capital contributions received from Qurate Retail, Inc. 0      
Dividends paid to Qurate Retail, Inc. 0 0    
Dividends paid to noncontrolling interest 0 0    
Other financing activities 0 0    
Net short-term intercompany debt (repayments) borrowings (16) (1,188)    
Other intercompany financing activities 313 1,959    
Net cash used in financing activities 297 771    
Effect of foreign exchange rate changes on cash, cash equivalents and restricted cash 0 0    
Net increase in cash, cash equivalents and restricted cash 57 (47)    
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents 90 50 33 97
Combined non-guarantor subsidiaries        
Operating activities:        
Net cash provided by operating activities 62 51    
Investing activities:        
Capital expenditures (54) (27)    
Expenditures for television distribution rights (1) 0    
Changes in other noncurrent assets (1) (1)    
Intercompany investing activities 0 0    
Net cash used in investing activities (56) (28)    
Financing activities:        
Principal payments of debt and capital lease obligations (8) (6)    
Principal borrowings of debt from senior secured credit facility 0 0    
Proceeds from Issuance of Secured Debt 0      
Payments of Debt Issuance Costs 0      
Capital contributions received from Qurate Retail, Inc. 0      
Dividends paid to Qurate Retail, Inc. 0 0    
Dividends paid to noncontrolling interest (23) (22)    
Other financing activities 0 0    
Net short-term intercompany debt (repayments) borrowings 31 1,541    
Other intercompany financing activities 23 (1,443)    
Net cash used in financing activities 23 70    
Effect of foreign exchange rate changes on cash, cash equivalents and restricted cash (2) 13    
Net increase in cash, cash equivalents and restricted cash 27 106    
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents 255 293 228 187
Elimination        
Operating activities:        
Net cash provided by operating activities 0 0    
Investing activities:        
Capital expenditures 0 0    
Expenditures for television distribution rights 0 0    
Changes in other noncurrent assets 0 0    
Intercompany investing activities 319 702    
Net cash used in investing activities 319 702    
Financing activities:        
Principal payments of debt and capital lease obligations 0 0    
Principal borrowings of debt from senior secured credit facility 0 0    
Proceeds from Issuance of Secured Debt 0      
Payments of Debt Issuance Costs 0      
Capital contributions received from Qurate Retail, Inc. 0      
Dividends paid to Qurate Retail, Inc. 0 0    
Dividends paid to noncontrolling interest 0 0    
Other financing activities 0 0    
Net short-term intercompany debt (repayments) borrowings 0 0    
Other intercompany financing activities (319) (702)    
Net cash used in financing activities (319) (702)    
Effect of foreign exchange rate changes on cash, cash equivalents and restricted cash 0 0    
Net increase in cash, cash equivalents and restricted cash 0 0    
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents $ 0 $ 0 $ 0 $ 0