Quarterly report pursuant to Section 13 or 15(d)

Derivative Instruments and Hedging Activities Interest Spread on Interest Rate Swaps and Caps (Details)

v3.19.2
Derivative Instruments and Hedging Activities Interest Spread on Interest Rate Swaps and Caps (Details) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2019
Jun. 30, 2018
Derivative Instruments, Gain (Loss) [Line Items]        
Average Notional Amount $ 57,194,079,000 $ 24,263,348,000 $ 52,476,177,000 $ 22,037,434,000
Interest Rate Contract [Member]        
Derivative Instruments, Gain (Loss) [Line Items]        
Net interest expense (income) on interest rate swaps and caps 22,900,000 13,800,000 46,600,000 17,600,000
Net Long Position [Member] | Interest Rate Contract [Member]        
Derivative Instruments, Gain (Loss) [Line Items]        
Average Notional Amount $ 40,700,000,000 $ 25,400,000,000 $ 39,100,000,000 $ 23,300,000,000