Primary Components of Net Deferred Tax Asset (Detail) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Deferred tax assets
Accrued related party interest	$ 19	$ 17
Net operating loss and capital loss carryovers	85	101
Alternative minimum tax credits	5	4
Property and equipment	4	4
Investments in domestic affiliates	3	3
Other	1	2
Deferred revenue	57	54
Total gross deferred tax assets	174	185
Valuation allowance	61	63
Total deferred tax assets, net of valuation allowance	113	122
Deferred tax liabilities
Property and equipment	(21)	(23)
Investments in domestic and foreign affiliates	(6)	(6)
Other	(3)	(3)
Total gross deferred tax liabilities	(30)	(32)
Net deferred tax assets	$ 83	$ 90