XML 100 R89.htm IDEA: XBRL DOCUMENT v3.19.2
Relationship with Bayview Lending Group LLC and Bayview Financial Holdings, L.P. - Additional Information (Detail) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2019
Mar. 31, 2019
Jun. 30, 2018
Mar. 31, 2018
Jun. 30, 2019
Jun. 30, 2018
Dec. 31, 2018
Schedule of Equity Method Investments [Line Items]              
Loan facility carrying amount $ 7,655,507,000       $ 7,655,507,000   $ 8,444,914,000
Bayview Lending Group [Member]              
Schedule of Equity Method Investments [Line Items]              
Minority interest in Bayview Lending Group LLC 20.00%       20.00%    
Carrying value of minority interest investment in Bayview Lending Group LLC $ 0       $ 0    
Bayview Lending Group [Member] | Other Revenues From Operations [Member]              
Schedule of Equity Method Investments [Line Items]              
Income (loss) from equity method investments 0 $ 37,000,000 $ 0 $ 23,000,000      
Bayview Lending Group and Bayview Financial [Member]              
Schedule of Equity Method Investments [Line Items]              
Outstanding principal balances of mortgage servicing rights 2,400,000,000       2,400,000,000   2,500,000,000
Revenue from contract with customer 3,000,000   4,000,000   6,000,000 $ 7,000,000  
Bayview Financial [Member]              
Schedule of Equity Method Investments [Line Items]              
Outstanding principal balances of residential mortgage loans from Bayview Financial 68,700,000,000       68,700,000,000   56,800,000,000
Revenues from sub-servicing 29,000,000   $ 28,000,000   57,000,000 $ 58,000,000  
Investment securities in held-to-maturity portfolio securitized by Bayview Financial 105,000,000       105,000,000   $ 113,000,000
Addition on outstanding principal balances of residential mortgage loans from Bayview Financial 16,600,000,000       16,600,000,000    
Bayview Financial [Member] | Syndicated Loan Facility [Member]              
Schedule of Equity Method Investments [Line Items]              
Loan facility carrying amount 826,000,000       826,000,000    
Bayview Financial [Member] | Syndicated Loan Facility [Member] | M&T Bank [Member]              
Schedule of Equity Method Investments [Line Items]              
Loan facility carrying amount $ 112,000,000       $ 112,000,000