Derivative Instruments and Hedging Activities Interest Spread on Interest Rate Swaps and Caps (Details) - USD ($) |
12 Months Ended | ||
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Dec. 31, 2019 |
Dec. 31, 2018 |
Dec. 31, 2017 |
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| Derivative Instruments, Gain (Loss) [Line Items] | |||
| Derivative, Notional Amount | $ 49,205,497,000 | $ 36,528,169,000 | $ 31,226,878,000 |
| Average Notional Amount | 52,764,012,000 | 31,823,176,000 | |
| Interest Rate Contract [Member] | |||
| Derivative Instruments, Gain (Loss) [Line Items] | |||
| Net interest expense (income) on interest rate swaps and caps | 70,500,000 | 49,200,000 | (8,800,000) |
| Net Long Position [Member] | Interest Rate Contract [Member] | |||
| Derivative Instruments, Gain (Loss) [Line Items] | |||
| Average Notional Amount | $ 40,000,000,000.0 | $ 29,400,000,000 | $ 19,400,000,000 |
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- Definition Average notional amount during the period presented specified by the derivative(s). No definition available.
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- Definition Net interest spread on interest rate swap and cap agreements, at fair value. No definition available.
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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- Definition Nominal or face amount used to calculate payment on derivative. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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