Geographic information (Detail) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Segment Reporting Information [Line Items]
Net Revenue	[1]	$ 503,312	$ 3,408	$ 961,742	$ 450,611
PUERTO RICO
Segment Reporting Information [Line Items]
Net Revenue	[1]	415,972	(80,277)	801,026	276,760
UNITED STATES
Segment Reporting Information [Line Items]
Net Revenue	[1]	67,235	64,992	123,945	127,475
Other [Member]
Segment Reporting Information [Line Items]
Net Revenue	[1]	$ 20,105	$ 18,693	$ 36,771	$ 46,376

[1] Total revenues include net interest income (expense) , service charges on deposit accounts, other service fees, mortgage banking activities, net gain (loss) and valuation adjustments on investment securities, trading account (loss) profit, net (loss) gain on sale of loans and valuation adjustments on loans held-for-sale, adjustments to indemnity reserves on loans sold, FDIC loss share ( expense ) income and other operating income .