Income Taxes - Significant Components of Company's Net Deferred Tax Assets/(Liabilities) (Detail) (USD $) In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013
Deferred tax assets:
Allowances and reserves	$ 43	$ 44
Employee benefits and compensation	43	39
Other accruals	72	59
Tax attribute carry forwards	619	518
Other	3	1
Total deferred tax assets	780	661
Valuation allowance	(394)	(296)
Net deferred tax assets	386	365
Deferred tax liabilities:
Depreciation, amortization and artist advances	(9)	(12)
Intangible assets	(714)	(749)
Total deferred tax liabilities	(723)	(761)
Net deferred tax liabilities	$ (337)	$ (396)