Related Party Transactions (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Related Party Transactions:
Dr. John Malone's voting interest in Liberty Interactive Corp. (percentage)	37.90%		37.90%
Liberty Interactive Corp.'s ownership percentage in HSN, Inc. (percentage)	38.20%		38.20%
Percent of board members Liberty Interactive Corp. can elect to HSN Inc.'s board (percentage)	20.00%		20.00%
Cash payments received from HSN, Inc. and QVC, Inc.	$ 16	$ 11	$ 33	$ 15
Dr. John Malone's ownership percentage in Discovery Communications, Inc. (percentage)	5.10%		5.10%
Dr. John Malone's voting interest in Discovery Communications, Inc. for election of directors (percentage)	28.20%		28.20%
Advance Newhouse Programming Partnership's ownership percentage in Series A preferred stock of Discovery Communications, Inc. (percentage)	100.00%		100.00%
Advance Newhouse Programming Partnership's ownership percentage in Series C preferred stock of Discovery Communications, Inc. (percentage)	100.00%		100.00%
Advance Newhouse Programming Partnership's ownership percentage in Discovery (percentage)	34.60%		34.60%
Dr. John Malone's ownership percentage in Starz (percentage)	5.90%		5.90%
Dr. John Malone's voting interest in Starz (percentage)	8.10%		8.10%
Maximum [Member]
Related Party Transactions:
Carrying value of noncontrolling interst purchased			$ 537
Percent of total operating costs and expenses paid to Discovery Communications, Inc. and Starz (percentage)	3.00%	3.00%	3.00%	3.00%
Equity Method Investee [Member]
Related Party Transactions:
Payments to related parties	$ 78	$ 37	$ 146	$ 41
Revenue from related parties	$ 3	$ 1	$ 5	$ 1