SUBSEQUENT EVENT SUBSEQUENT EVENT - Additional Information (Detail) - Subsequent Event	Nov. 02, 2015 USD ($) $ / shares
Subsequent Event [Line Items]
Conversion price per share | $ / shares	$ 37.30
Contractual contingent right payment	$ 4.00
Aggregate assets to divest maximum	77,000,000.0
Company termination fee	180,000,000
Parent termination fee	280,000,000
Out-of-pocket expense reimbursement maximum	$ 15,000,000