Inventory (Details) (USD $) In Millions	Jun. 30, 2011	Sep. 30, 2010
Inventory Net [Line Items]
Total inventory, net of amortization	$ 3,203	$ 3,148
Acquired program rights, net of amortization	1,546	1,708
Merchandise and other inventory, net of allowances	130	150
Total inventory, net	4,879	5,006
Less current portion of inventory, net	(803)	(861)
Total inventory - noncurrent, net	4,076	4,145
Inventory Valuation Reserves	81	73
Film Inventory [Member]
Inventory Net [Line Items]
Released, net of amortization	1,116	900
Completed, not yet released	64	83
In process and other	407	652
Total inventory, net of amortization	1,587	1,635
Original Programming [Member]
Inventory Net [Line Items]
Released, net of amortization	1,160	1,033
Completed, not yet released	6	5
In process and other	450	475
Total inventory, net of amortization	$ 1,616	$ 1,513