SCHEDULE II-VALUATION AND QUALIFYING ACCOUNTS (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Allowance for Doubtful Accounts
Valuation and Qualifying Accounts Disclosure [Line Items]
Beginning balance	$ 73,991	$ 102,213	$ 91,854
Provisions for Doubtful Accounts	3,906	11,877	18,091
Write-offs, Net of Recoveries	(3,219)	(40,099)	(7,732)
Ending balance	74,678	73,991	102,213
Valuation Allowance of Deferred Tax Assets
Valuation and Qualifying Accounts Disclosure [Line Items]
Beginning balance	2,587,025	1,831,545	1,812,482
Provisions for Doubtful Accounts	745,112	773,509	29,132
Write-offs, Net of Recoveries	(35,348)	(18,029)	(10,069)
Ending balance	$ 3,296,789	$ 2,587,025	$ 1,831,545