Quarterly report pursuant to Section 13 or 15(d)

DERIVATIVES - Derivatives Notional Amount (Details)

v3.19.2
DERIVATIVES - Derivatives Notional Amount (Details) - Not Designated as Hedging Instrument - USD ($)
6 Months Ended
Jun. 30, 2019
Dec. 31, 2018
Interest Rate Caps    
Derivative [Line Items]    
Derivative asset, notional amount $ 50,000,000 $ 50,000,000
Derivative, cap interest rate 4.00%  
Notional amount of derivatives $ 50,000,000.0  
Weighted average maturity 17 months  
Interest Rate Swaps    
Derivative [Line Items]    
Derivative liability, notional amount $ 6,780,000,000 4,725,000,000
Interest Rate Swaps | TBAs, short position    
Derivative [Line Items]    
Derivative, cap interest rate 2.09%  
Notional amount of derivatives $ 2,300,000,000  
Weighted average maturity 90 months  
Interest Rate Swaps | TBAs, long position    
Derivative [Line Items]    
Derivative, cap interest rate 3.16%  
Notional amount of derivatives $ 4,500,000,000  
Weighted average maturity 46 months  
Interest Rate Lock Commitments    
Derivative [Line Items]    
Derivative asset, notional amount $ 2,331,923,000 823,187,000
Forward Loan Sale Commitments    
Derivative [Line Items]    
Derivative asset, notional amount 50,970,000 30,274,000
TBAs | TBAs, short position    
Derivative [Line Items]    
Derivative liability, notional amount 5,280,000,000 5,904,300,000
TBAs | TBAs, long position    
Derivative [Line Items]    
Derivative liability, notional amount $ 8,437,700,000 $ 5,067,200,000