Debt (Narrative) (Details) | Dec. 31, 2016USD ($) | Oct. 05, 2016USD ($) | Jun. 23, 2016USD ($) | Apr. 15, 2015USD ($) | Aug. 09, 2012 | May 31, 2016USD ($) | Jun. 30, 2012USD ($) | Dec. 31, 2016USD ($) | Dec. 31, 2015USD ($) | Dec. 31, 2014USD ($) | Dec. 31, 2016USD ($) | Aug. 31, 2016USD ($)$ / shares | Mar. 09, 2015USD ($) | Aug. 21, 2014USD ($) | Mar. 18, 2014USD ($) | May 22, 2012$ / shares |
Debt Instrument Carrying Amount | $ 8,371,000,000 | | | | | | | $ 8,371,000,000 | | | $ 8,371,000,000 | | | | | |
Debt Instrument, Face Amount | 1,000,000 | | | | | | | 1,000,000 | | | 1,000,000 | | | | | |
Extraordinary Distribution to Bondholder | | | | | | $ 325,000,000 | | | | | | | | | | |
Proceeds from Issuance of Long-term Debt | | | | | | | | 3,427,000,000 | $ 4,558,000,000 | $ 4,506,000,000 | | | | | | |
Loss on extinguishment of debt | | | | | | | | (6,000,000) | (21,000,000) | (48,000,000) | (21,000,000) | | | | | |
Quarterly dividend received per share from equity method affiliate | | | | | | | | 0.18 | | | | | | | | |
Debt, Current | $ 876,000,000 | | | | | | | 876,000,000 | 1,226,000,000 | | $ 876,000,000 | | | | | |
Proceeds from (Repayments of) Long-term Debt and Capital Securities | | | | | | | | $ 1,181,000,000 | | | | | | | | |
Senior Debentures | | | | | | | | | | | | | | | | |
Debt Instrument, Unamortized Discount | | | | | | | | | 5,000,000 | 5,000,000 | | | | | | |
Motorola Mobility [Member] | | | | | | | | | | | | | | | | |
Business Acquisition, Share Price | $ / shares | | | | | | | | | | | | | | | | $ 40 |
8.5% Senior Debentures Due 2029 | | | | | | | | | | | | | | | | |
Interest rate (as a percent) | 8.50% | | | | | | | 8.50% | | | 8.50% | | | | | |
8.25% Senior Debentures Due 2030 | | | | | | | | | | | | | | | | |
Interest rate (as a percent) | 8.25% | | | | | | | 8.25% | | | 8.25% | | | | | |
Exchangeable Senior Debentures | | | | | | | | | | | | | | | | |
Debt, Current | | | | | | | | | 862,000,000 | | | | | | | |
1% Exchangeable Senior Debentures due 2043 | | | | | | | | | | | | | | | | |
Debt Instrument, Face Amount | $ 1,000 | | | | | | | $ 1,000 | | | $ 1,000 | | | | | |
Interest rate (as a percent) | 1.00% | | | | | | | 1.00% | | | 1.00% | | | | | |
1% Exchangeable Senior Debentures due 2043 | HSN, Inc. | | | | | | | | | | | | | | | | |
Debt Instrument, Convertible, Conversion Ratio | | | | | | | | 13.4580 | | | | | | | | |
QVC 3.125% Senior Secured Notes Due 2019 [Member] | | | | | | | | | | | | | | | | |
Debt Instrument, Face Amount | | | | | | | | | | | | | | | $ 400,000,000 | |
Interest rate (as a percent) | 3.125% | | | | | | | 3.125% | | | 3.125% | | | | 3.125% | |
Debt issuance price as percent of par | | | | | | | | | | | | | | | 99.828% | |
QVC 5.125% Senior Secured Notes Due 2022 [Member] | | | | | | | | | | | | | | | | |
Debt Instrument, Face Amount | $ 500,000,000 | | | | | | | $ 500,000,000 | | | $ 500,000,000 | | | | | |
Interest rate (as a percent) | 5.125% | | | | | | | 5.125% | | | 5.125% | | | | | |
QVC 4.375% Senior Secured Notes due 2023 | | | | | | | | | | | | | | | | |
Debt Instrument, Face Amount | $ 750,000,000 | | | | | | | $ 750,000,000 | | | $ 750,000,000 | | | | | |
Interest rate (as a percent) | 4.375% | | | | | | | 4.375% | | | 4.375% | | | | | |
QVC 4.85% Senior Secured Notes Due 2024 [Member] | | | | | | | | | | | | | | | | |
Debt Instrument, Face Amount | | | | | | | | | | | | | | | $ 600,000,000 | |
Interest rate (as a percent) | | | | | | | | | | | | | | | 4.85% | |
Debt issuance price as percent of par | | | | | | | | | | | | | | | 99.927% | |
QVC 4.45% Senior Secured Notes Due 2025 [Member] | | | | | | | | | | | | | | | | |
Debt Instrument, Face Amount | | | | | | | | | | | | | | $ 600,000,000 | | |
Interest rate (as a percent) | | | | | | | | | | | | | | 4.45% | | |
Debt issuance price as percent of par | | | | | | | | | | | | | | 99.86% | | |
QVC 5.45% Senior Secured Notes Due 2034 [Member] | | | | | | | | | | | | | | | | |
Debt Instrument, Face Amount | | | | | | | | | | | | | | $ 400,000,000 | | |
Interest rate (as a percent) | | | | | | | | | | | | | | 5.45% | | |
Debt issuance price as percent of par | | | | | | | | | | | | | | 99.784% | | |
QVC 5.95% Senior Secured Notes due 2043 | | | | | | | | | | | | | | | | |
Debt Instrument, Face Amount | $ 300,000,000 | | | | | | | $ 300,000,000 | | | $ 300,000,000 | | | | | |
Interest rate (as a percent) | 5.95% | | | | | | | 5.95% | | | 5.95% | | | | | |
QVC 7.5% Senior Secured Notes Due 2019 | | | | | | | | | | | | | | | | |
Interest rate (as a percent) | 7.50% | | | | | | | 7.50% | | | 7.50% | | | | | |
QVC 7.375% Senior Secured Notes Due 2020 | | | | | | | | | | | | | | | | |
Debt Instrument, Face Amount | $ 500,000,000 | | | | | | | $ 500,000,000 | | | $ 500,000,000 | | | | | |
Interest rate (as a percent) | 7.375% | | | | | | | 7.375% | | | 7.375% | | | | | |
QVC 7.375% Senior Secured Notes Due 2020 | Senior secured note [Member] | | | | | | | | | | | | | | | | |
Debt Instrument, Repurchase Amount | | | | $ 1,036.88 | | | | | | | | | | | | |
Debt Instrument, Face Amount | | | | 1,000 | | | | | | | | | | | | |
Extinguishment of Debt, Amount | | | | $ 500,000,000 | | | | | | | | | | | | |
4% Exchangeable Senior Debentures Due 2029 | | | | | | | | | | | | | | | | |
Debt Instrument, Face Amount | $ 1,000 | | | | | | | $ 1,000 | | | $ 1,000 | | | | | |
Interest rate (as a percent) | 4.00% | | | | | | | 4.00% | | | 4.00% | | | | | |
4% Exchangeable Senior Debentures Due 2029 | Sprint [Member] | | | | | | | | | | | | | | | | |
Debt Instrument, Convertible, Conversion Ratio | | | | | | | | 3.2265 | | | | | | | | |
4% Exchangeable Senior Debentures Due 2029 | Century Link, Inc. [Member] | | | | | | | | | | | | | | | | |
Debt Instrument, Convertible, Conversion Ratio | | | | | | | | 0.7860 | | | | | | | | |
3.75% Exchangeable Senior Debentures Due 2030 | | | | | | | | | | | | | | | | |
Debt Instrument, Face Amount | $ 1,000 | | | | | | | $ 1,000 | | | $ 1,000 | | | | | |
Interest rate (as a percent) | 3.75% | | | | | | | 3.75% | | | 3.75% | | | | | |
3.75% Exchangeable Senior Debentures Due 2030 | Sprint [Member] | | | | | | | | | | | | | | | | |
Debt Instrument, Convertible, Conversion Ratio | | | | | | | | 2.3578 | | | | | | | | |
3.75% Exchangeable Senior Debentures Due 2030 | Century Link, Inc. [Member] | | | | | | | | | | | | | | | | |
Debt Instrument, Convertible, Conversion Ratio | | | | | | | | 0.5746 | | | | | | | | |
3.5% Exchangeable Senior Debentures Due 2031 | | | | | | | | | | | | | | | | |
Debt Instrument, Face Amount | $ 1,000 | | | | | | | $ 1,000 | | | $ 1,000 | | | | | |
Repayments of Debt | | | | | | | $ 111,000,000 | | | | | | | | | |
Interest rate (as a percent) | 3.50% | | | | | | | 3.50% | | | 3.50% | | | | | |
3.5% Exchangeable Senior Debentures Due 2031 | Motorola Solutions [Member] | | | | | | | | | | | | | | | | |
Debt Instrument, Convertible, Conversion Ratio | | | | | | | | 5.2598 | | | | | | | | |
Stock split, conversion ratio | | | | | | | | 7 | | | | | | | | |
3.5% Exchangeable Senior Debentures Due 2031 | Motorola Mobility [Member] | | | | | | | | | | | | | | | | |
Debt Instrument, Convertible, Conversion Ratio | | | | | | | | 4.6024 | | | | | | | | |
Stock split, conversion ratio | | | | | | | | 8 | | | | | | | | |
0.75% Exchangeable Senior Debentures due 2043 | | | | | | | | | | | | | | | | |
Debt Instrument, Face Amount | $ 1,000 | | | | | | | $ 1,000 | | | $ 1,000 | | | | | |
Debt exchanged | | | | | | | | $ 523,000,000 | | | | | | | | |
Interest rate (as a percent) | 0.75% | | | | | | | 0.75% | | | 0.75% | | | | | |
0.75% Exchangeable Senior Debentures due 2043 | Time Warner Cable Inc | | | | | | | | | | | | | | | | |
Debt Instrument, Convertible, Conversion Ratio | | | | | | | | 3.1648 | | | | | | | | |
0.75% Exchangeable Senior Debentures due 2043 | Time Warner Inc | | | | | | | | | | | | | | | | |
Debt Instrument, Convertible, Conversion Ratio | | | | | | | | 5.1635 | | | | | | | | |
0.75% Exchangeable Senior Debentures due 2043 | Time Inc | | | | | | | | | | | | | | | | |
Debt Instrument, Convertible, Conversion Ratio | | | | | | | | 0.6454 | | | | | | | | |
1.75% Exchangeable Senior Debentures due 2046 [Member] | | | | | | | | | | | | | | | | |
Debt Instrument Carrying Amount | $ 750,000,000 | | | | | | | $ 750,000,000 | | | $ 750,000,000 | | | | | |
Debt Instrument, Face Amount | | | | | | | | | | | | $ 750,000,000 | | | | |
Interest rate (as a percent) | | | | | | | | | | | | 1.75% | | | | |
1.75% Exchangeable Senior Debentures due 2046 [Member] | Charter Communications, Inc. | | | | | | | | | | | | | | | | |
Debt Instrument, Convertible, Conversion Ratio | | | | | | | | 2.9317 | | | | | | | | |
Exchange Price of Shares Attributable to Debentures | $ / shares | | | | | | | | | | | | $ 341.10 | | | | |
principal repayment per debenture [Member] | 3.5% Exchangeable Senior Debentures Due 2031 | | | | | | | | | | | | | | | | |
Repayments of Debt | | | | | | | $ 184.096 | | | | | | | | | |
Adjusted face amount per debenture [Member] | 3.5% Exchangeable Senior Debentures Due 2031 | | | | | | | | | | | | | | | | |
Debt instrument, face amount per debenture | | | | | | | | | 577 | | | | | | | |
Minimum | 1% Exchangeable Senior Debentures due 2043 | HSN, Inc. | | | | | | | | | | | | | | | | |
Conversion obligation average trading price (as a percent) | | | | | | | | 130.00% | | | | | | | | |
Maximum | 1% Exchangeable Senior Debentures due 2043 | HSN, Inc. | | | | | | | | | | | | | | | | |
Conversion obligation average trading price (as a percent) | | | | | | | | 98.00% | | | | | | | | |
QVC Group Common Stock | | | | | | | | | | | | | | | | |
Debt Instrument Carrying Amount | 6,412,000,000 | | | | | | | $ 6,412,000,000 | | | 6,412,000,000 | | | | | |
Proceeds from Issuance of Long-term Debt | | | | | | | | 1,905,000,000 | 3,969,000,000 | 4,360,000,000 | | | | | | |
Loss on extinguishment of debt | | | | | | | | 1,000,000 | (21,000,000) | (48,000,000) | | | | | | |
Debt, Current | 14,000,000 | | | | | | | 14,000,000 | 358,000,000 | | 14,000,000 | | | | | |
QVC Group Common Stock | Interest Rate Swap [Member] | | | | | | | | | | | | | | | | |
Derivative, Notional Amount | 125,000,000 | | | | | | | 125,000,000 | | | 125,000,000 | | | | | |
QVC Group Common Stock | 8.5% Senior Debentures Due 2029 | | | | | | | | | | | | | | | | |
Debt Instrument Carrying Amount | $ 287,000,000 | | | | | | | $ 287,000,000 | | | $ 287,000,000 | | | | | |
Interest rate (as a percent) | 8.50% | | | | | | | 8.50% | | | 8.50% | | | | | |
QVC Group Common Stock | 8.25% Senior Debentures Due 2030 | | | | | | | | | | | | | | | | |
Debt Instrument Carrying Amount | $ 504,000,000 | | | | | | | $ 504,000,000 | | | $ 504,000,000 | | | | | |
Interest rate (as a percent) | 8.25% | | | | | | | 8.25% | | | 8.25% | | | | | |
QVC Group Common Stock | Exchangeable Senior Debentures | | | | | | | | | | | | | | | | |
Repayments of Debt | | $ 345,000,000 | | | | | | | | | | | | | | |
QVC Group Common Stock | 1% Exchangeable Senior Debentures due 2043 | | | | | | | | | | | | | | | | |
Debt Instrument Carrying Amount | $ 1,000,000 | | | | | | | $ 1,000,000 | | | $ 1,000,000 | | | | | |
Interest rate (as a percent) | 1.00% | | | | | | | 1.00% | | | 1.00% | | | | | |
QVC Group Common Stock | QVC 3.125% Senior Secured Notes Due 2019 [Member] | | | | | | | | | | | | | | | | |
Debt Instrument Carrying Amount | $ 400,000,000 | | | | | | | $ 400,000,000 | | | $ 400,000,000 | | | | | |
QVC Group Common Stock | QVC 5.125% Senior Secured Notes Due 2022 [Member] | | | | | | | | | | | | | | | | |
Debt Instrument Carrying Amount | $ 500,000,000 | | | | | | | $ 500,000,000 | | | $ 500,000,000 | | | | | |
Interest rate (as a percent) | 5.125% | | | | | | | 5.125% | | | 5.125% | | | | | |
QVC Group Common Stock | QVC 4.375% Senior Secured Notes due 2023 | | | | | | | | | | | | | | | | |
Debt Instrument Carrying Amount | $ 750,000,000 | | | | | | | $ 750,000,000 | | | $ 750,000,000 | | | | | |
Interest rate (as a percent) | 4.375% | | | | | | | 4.375% | | | 4.375% | | | | | |
QVC Group Common Stock | QVC 4.85% Senior Secured Notes Due 2024 [Member] | | | | | | | | | | | | | | | | |
Debt Instrument Carrying Amount | $ 600,000,000 | | | | | | | $ 600,000,000 | | | $ 600,000,000 | | | | | |
Interest rate (as a percent) | 4.85% | | | | | | | 4.85% | | | 4.85% | | | | | |
QVC Group Common Stock | QVC 4.45% Senior Secured Notes Due 2025 [Member] | | | | | | | | | | | | | | | | |
Debt Instrument Carrying Amount | $ 600,000,000 | | | | | | | $ 600,000,000 | | | $ 600,000,000 | | | | | |
Interest rate (as a percent) | 4.45% | | | | | | | 4.45% | | | 4.45% | | | | | |
QVC Group Common Stock | QVC 5.45% Senior Secured Notes Due 2034 [Member] | | | | | | | | | | | | | | | | |
Debt Instrument Carrying Amount | $ 400,000,000 | | | | | | | $ 400,000,000 | | | $ 400,000,000 | | | | | |
Interest rate (as a percent) | 5.45% | | | | | | | 5.45% | | | 5.45% | | | | | |
QVC Group Common Stock | QVC 5.95% Senior Secured Notes due 2043 | | | | | | | | | | | | | | | | |
Debt Instrument Carrying Amount | $ 300,000,000 | | | | | | | $ 300,000,000 | | | $ 300,000,000 | | | | | |
Interest rate (as a percent) | 5.95% | | | | | | | 5.95% | | | 5.95% | | | | | |
QVC Group Common Stock | Amendment No. 2 QVC Bank Credit Facility | | | | | | | | | | | | | | | | |
Debt Instrument Carrying Amount | $ 1,896,000,000 | | | | | | | $ 1,896,000,000 | | | $ 1,896,000,000 | | | | | |
QVC Group Common Stock | Amendment No. 3 QVC Bank Credit Facility | | | | | | | | | | | | | | | | |
Maximum Borrowing Capacity | | | $ 2,650,000,000 | | | | | | | | | | | | | |
Remaining borrowing capacity | $ 744,000,000 | | | | | | | 744,000,000 | | | 744,000,000 | | | | | |
Debt Instrument, Interest Rate During Period | 2.20% | | | | | | | | | | | | | | | |
QVC Group Common Stock | Standby Letters of Credit | | | | | | | | | | | | | | | | |
Maximum Borrowing Capacity | | | 300,000,000 | | | | | | | | | | | | | |
Remaining borrowing capacity | $ 10,000,000 | | | | | | | 10,000,000 | | | 10,000,000 | | | | | |
QVC Group Common Stock | Uncommitted Incremental Revolving Loan Commitments or Incremental Term Loans | | | | | | | | | | | | | | | | |
Maximum Borrowing Capacity | | | 1,500,000,000 | | | | | | | | | | | | | |
QVC Group Common Stock | Portion of Credit Facility Available Only to QVC | | | | | | | | | | | | | | | | |
Maximum Borrowing Capacity | | | 2,250,000,000 | | | | | | | | | | | | | |
QVC Group Common Stock | Portion of Credit Facility Available to QVC and zulily | | | | | | | | | | | | | | | | |
Maximum Borrowing Capacity | | | 400,000,000 | | | | | | | | | | | | | |
QVC Group Common Stock | Portion of Credit Facility that matures on March 9, 2020 [Member] | | | | | | | | | | | | | | | | |
Maximum Borrowing Capacity | | | $ 140,000,000 | | | | | | | | | | | | | |
QVC Group Common Stock | QVC | Amendment No. 2 QVC Bank Credit Facility | | | | | | | | | | | | | | | | |
Maximum Borrowing Capacity | | | | | | | | | | | | | $ 2,250,000,000 | | | |
QVC Group Common Stock | QVC | Standby Letters of Credit | | | | | | | | | | | | | | | | |
Maximum Borrowing Capacity | | | | | | | | | | | | | 250,000,000 | | | |
QVC Group Common Stock | QVC | Uncommitted Incremental Revolving Loan Commitments or Incremental Term Loans | | | | | | | | | | | | | | | | |
Maximum Borrowing Capacity | | | | | | | | | | | | | $ 1,500,000,000 | | | |
QVC Group Common Stock | LIBOR | Amendment No. 3 QVC Bank Credit Facility | | | | | | | | | | | | | | | | |
Debt Instrument, Description of Variable Rate Basis | | | LIBOR | | | | | | | | | | | | | |
QVC Group Common Stock | ABR | Amendment No. 3 QVC Bank Credit Facility | | | | | | | | | | | | | | | | |
Debt Instrument, Description of Variable Rate Basis | | | ABR | | | | | | | | | | | | | |
QVC Group Common Stock | Minimum | Amendment No. 3 QVC Bank Credit Facility | | | | | | | | | | | | | | | | |
Debt Instrument, Basis Spread on Variable Rate | | | 0.25% | | | | | | | | | | | | | |
QVC Group Common Stock | Maximum | Amendment No. 3 QVC Bank Credit Facility | | | | | | | | | | | | | | | | |
Debt Instrument, Basis Spread on Variable Rate | | | 1.75% | | | | | | | | | | | | | |
QVC Group Common Stock | Maximum | Portion of Credit Facility Available to QVC and zulily | | | | | | | | | | | | | | | | |
Maximum Borrowing Capacity | | | $ 50,000,000 | | | | | | | | | | | | | |
Liberty Ventures common stock | | | | | | | | | | | | | | | | |
Debt Instrument Carrying Amount | 1,959,000,000 | | | | | | | 1,959,000,000 | | | 1,959,000,000 | | | | | |
Proceeds from Issuance of Long-term Debt | | | | | | | | 1,522,000,000 | 589,000,000 | $ 146,000,000 | | | | | | |
Loss on extinguishment of debt | | | | | | | | (7,000,000) | | | | | | | | |
Stock split, conversion ratio | | | | | 0.05 | | | | | | | | | | | |
Debt, Current | 862,000,000 | | | | | | | 862,000,000 | $ 868,000,000 | | 862,000,000 | | | | | |
Liberty Ventures common stock | 4% Exchangeable Senior Debentures Due 2029 | | | | | | | | | | | | | | | | |
Debt Instrument Carrying Amount | $ 435,000,000 | | | | | | | $ 435,000,000 | | | $ 435,000,000 | | | | | |
Interest rate (as a percent) | 4.00% | | | | | | | 4.00% | | | 4.00% | | | | | |
Liberty Ventures common stock | 3.75% Exchangeable Senior Debentures Due 2030 | | | | | | | | | | | | | | | | |
Debt Instrument Carrying Amount | $ 436,000,000 | | | | | | | $ 436,000,000 | | | $ 436,000,000 | | | | | |
Interest rate (as a percent) | 3.75% | | | | | | | 3.75% | | | 3.75% | | | | | |
Liberty Ventures common stock | 3.5% Exchangeable Senior Debentures Due 2031 | | | | | | | | | | | | | | | | |
Debt Instrument Carrying Amount | $ 337,000,000 | | | | | | | $ 337,000,000 | | | $ 337,000,000 | | | | | |
Interest rate (as a percent) | 3.50% | | | | | | | 3.50% | | | 3.50% | | | | | |
Liberty Ventures common stock | 0.75% Exchangeable Senior Debentures due 2043 | | | | | | | | | | | | | | | | |
Debt Instrument Carrying Amount | $ 1,000,000 | | | | | | | $ 1,000,000 | | | $ 1,000,000 | | | | | |
Interest rate (as a percent) | 0.75% | | | | | | | 0.75% | | | 0.75% | | | | | |
Liberty Ventures common stock | 1.75% Exchangeable Senior Debentures due 2046 [Member] | | | | | | | | | | | | | | | | |
Interest rate (as a percent) | 1.75% | | | | | | | 1.75% | | | 1.75% | | | | | |