Commitments And Contingencies (Details) ft² in Millions, $ in Millions |
Jul. 02, 2015
USD ($)
ft²
item
|
Sep. 30, 2016
USD ($)
|
|---|---|---|
| Long-term Purchase Commitment [Line Items] | ||
| Debt Instrument Carrying Amount | $ 8,476 | |
| QVC | West Coast Distribution Center Lease | ||
| Long-term Purchase Commitment [Line Items] | ||
| Area of leased building (in square feet) | ft² | 1 | |
| Lessee Leasing Arrangements, Operating Leases, Term of Contract | 15 years | |
| Operating Leases, Rent Expense | $ 6 | |
| Operating Lease, Rent Expense In Final Year Of Initial Term | $ 8 | |
| Maximum number of terms eligible for extension | item | 2 | |
| Lessee Leasing Arrangements, Operating Leases, Renewal Term | 10 years | |
| Initial Payment to Purchase Land | $ 10 | |
| Subsequent Annual Payments to Purchase Land | $ 12 | |
| Term of Annual Payments for Land Purchase | 13 years | |
| Debt Instrument Carrying Amount | $ 104 |