Income Taxes - Significant Components of Company's Net Deferred Tax Assets/(Liabilities) (Detail) (Successor [Member], USD $) In Millions, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012
Successor [Member]
Deferred tax assets:
Allowances and reserves	$ 44	$ 39
Employee benefits and compensation	39	38
Other accruals	59	48
Long-term debt		42
Tax attribute carry forwards	518	418
Other	1	1
Total deferred tax assets	661	586
Valuation allowance	(296)	(244)
Net deferred tax assets	365	342
Deferred tax liabilities:
Depreciation, amortization and artist advances	(12)	(16)
Intangible assets	(749)	(650)
Total deferred tax liabilities	(761)	(666)
Net deferred tax liabilities	$ (396)	$ (324)