Derivative Instruments and Hedging Activities Interest Spread on Interest Rate Swaps and Caps (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Derivative Instruments, Gain (Loss) [Line Items]
Average Notional Amount	$ 5,106,042,000	$ 21,137,615,000	$ 7,176,645,000	$ 20,840,267,000
Interest Rate Contract [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Net interest expense (income) on interest rate swaps and caps	(200,000)	(4,400,000)	4,800,000	8,500,000
Net Long Position [Member] | Interest Rate Contract [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Average Notional Amount	$ 5,000,000,000	$ 15,900,000,000	$ 16,600,000,000	$ 14,900,000,000