|
Basis Of Presentation Basis of Presentation (Details) (USD $)
In Millions, unless otherwise specified |
3 Months Ended | 9 Months Ended | 3 Months Ended | 6 Months Ended | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
|
Sep. 30, 2013
|
Sep. 30, 2012
|
Sep. 30, 2013
|
Sep. 30, 2012
|
Mar. 31, 2013
TripAdvisor, Inc. [Member]
|
Dec. 31, 2012
TripAdvisor, Inc. [Member]
|
Dec. 11, 2012
TripAdvisor, Inc. [Member]
|
Jun. 30, 2014
Liberty Digital Commerce [Member]
|
Jun. 30, 2014
QVC Group [Member]
|
Sep. 30, 2013
Interactive Group [Member]
HSN, Inc. [Member]
|
|
| Prior Period Reclassification Adjustment | $ 30 | |||||||||
| Stockholders' Equity Note, Stock Split, Conversion Ratio | 0.05 | 1.00 | 10.00 | |||||||
| Equity Method Investment, Ownership Percentage | 38.00% | |||||||||
| Related Party Transaction, Amounts of Transaction | 4 | 4 | 12 | 9 | ||||||
| Purchase of shares in equity method investee | 4.8 | |||||||||
| ownership percentage acquired | 4.00% | |||||||||
| Business Acquisition, Cost of Acquired Entity, Cash Paid | $ 300 | |||||||||
| Ownership Interest In Investee | 22.00% | |||||||||
| Business Acquisition, Percentage of Voting Interests Acquired | 57.00% | |||||||||
| Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners | 78.00% | |||||||||