XML 87 R73.htm IDEA: XBRL DOCUMENT v3.8.0.1
Mortgage Servicing - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Transfers and Servicing [Abstract]    
UPB of MSRs sold $ 3.3 $ 100.0
Unpaid principal balance of non-agency and whole loans servicing agreements with minimum servicer ratings 28,900.0  
Unpaid principal balance of non-agency and whole loans servicing agreements with termination rights triggered $ 9,100.0  
Percentage of non-agency and whole loans servicing agreements with termination rights triggered of servicing portfolio 9.00%  
Float balances $ 1,600.0 $ 2,000.0