Guarantees - Additional Information (Detail) (USD $)									3 Months Ended		9 Months Ended								3 Months Ended		9 Months Ended						3 Months Ended					3 Months Ended		9 Months Ended
	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2014 Parent Company [Member] Debt Securities Payable Member	Dec. 31, 2013 Parent Company [Member] Debt Securities Payable Member	Sep. 30, 2014 Loans With Recourse [Member]	Dec. 31, 2013 Loans With Recourse [Member]	Sep. 30, 2014 Serviced Mortgage Loans [Member]	Dec. 31, 2013 Serviced Mortgage Loans [Member]	Sep. 30, 2014 Serviced Mortgage Loans [Member] Loans With Recourse [Member]	Sep. 30, 2013 Serviced Mortgage Loans [Member] Loans With Recourse [Member]	Sep. 30, 2014 Serviced Mortgage Loans [Member] Loans With Recourse [Member]	Sep. 30, 2013 Serviced Mortgage Loans [Member] Loans With Recourse [Member]	Sep. 30, 2014 Serviced Mortgage Loans [Member] Puerto Rico Banking Subsidiaries Loans Serviced Under Representation Warranties [Member]	Sep. 30, 2013 Serviced Mortgage Loans [Member] Puerto Rico Banking Subsidiaries Loans Serviced Under Representation Warranties [Member]	Sep. 30, 2014 Financial Standby Letter Of Credit Member	Dec. 31, 2013 Financial Standby Letter Of Credit Member	Sep. 30, 2014 Indemnification Guarantee Member E Loan [Member]	Dec. 31, 2013 Indemnification Guarantee Member E Loan [Member]	Sep. 30, 2014 Indemnification Guarantee Member Banco Popular De Puerto Rico [Member]	Sep. 30, 2013 Indemnification Guarantee Member Banco Popular De Puerto Rico [Member]	Sep. 30, 2014 Indemnification Guarantee Member Banco Popular De Puerto Rico [Member]	Sep. 30, 2013 Indemnification Guarantee Member Banco Popular De Puerto Rico [Member]	Jun. 30, 2014 Indemnification Guarantee Member Banco Popular De Puerto Rico [Member]	Dec. 31, 2013 Indemnification Guarantee Member Banco Popular De Puerto Rico [Member]	Jun. 30, 2013 Indemnification Guarantee Member Banco Popular De Puerto Rico [Member]	Dec. 31, 2012 Indemnification Guarantee Member Banco Popular De Puerto Rico [Member]	Jun. 30, 2014 Indemnification Guarantee Member Banco Popular De Puerto Rico [Member] Bulk Sale Of Non Performing Assets March 2013 [Member]	Jun. 30, 2013 Indemnification Guarantee Member Banco Popular De Puerto Rico [Member] Bulk Sale Of Non Performing Assets March 2013 [Member]	Sep. 30, 2013 Indemnification Guarantee Member Banco Popular De Puerto Rico [Member] Bulk Sale Of Non Performing Mortgage Loans June 2013 [Member]	Sep. 30, 2014 Guarantee Type, Other [Member] Parent Company [Member] Underlying Other Member	Dec. 31, 2013 Guarantee Type, Other [Member] Parent Company [Member] Underlying Other Member	Sep. 30, 2014 Financial Guarantee Member	Sep. 30, 2013 Financial Guarantee Member	Sep. 30, 2014 Financial Guarantee Member	Sep. 30, 2013 Financial Guarantee Member	Jun. 30, 2014 Financial Guarantee Member	Dec. 31, 2013 Financial Guarantee Member	Jun. 30, 2013 Financial Guarantee Member	Dec. 31, 2012 Financial Guarantee Member
Guarantor Obligations [Line Items]
Guarantees, unamortized balance of the obligations			$ 200,000,000	$ 200,000,000											$ 400,000	$ 400,000														$ 400,000,000	$ 1,400,000,000
Repurchased Loans									21,000,000	29,000,000	69,000,000	95,000,000	2,200,000	4,000,000
Valuation Allowances And Reserves Balance																	5,000,000	7,000,000	16,142,000	18,914,000	16,142,000	18,914,000	15,919,000	19,277,000	20,959,000	7,587,000						51,196,000	43,829,000	51,196,000	43,829,000	47,892,000	41,463,000	45,892,000	51,673,000
Funds Advanced To Investors Under Servicing Agreements	33,000,000	29,000,000
Qualitative And Quantitative Information Assets Or Liabilities For Transferors Continuing Involvement In Securitization Or Assetbacked Financing Arrangement Principal Amounts Outstanding					2,200,000,000	2,500,000,000	15,800,000,000	16,300,000,000
Losses Recorded From Reps Warrants Repurchases													1,600,000	800,000
Maximum Amount Of Future Payments Under Gurantee																												18,000,000	16,300,000
Guarantee Obligations Term																													one year
Valuation Allowance and Reseves Due To Loan Sales With Reps And Warrants																			0	0	0	13,747,000						10,700,000	3,000,000
Valuation Allowances And Reserves Charged To Other Accounts																			$ 230,000	$ (1,100,000)	$ (1,235,000)	$ (975,000)					$ 2,000,000					$ 9,189,000	$ 5,180,000	$ 28,215,000	$ 15,965,000