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Derivative Financial Instruments - Impact of Derivatives on Consolidated Statements of Income (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019
Cash Flow Hedges |  |  |  |
Interest expense | $ 117,811 | $ 185,326 | $ 428,649 | $ 526,352
Trading |  |  |  |
Total | 5,820 | 656 | 58,965 | 17,331
Designated as Hedging Instrument |  |  |  |
Fair Value Hedges |  |  |  |
Interest recognized on derivatives | 23,851 | (2,924) | 47,906 | (10,812)
Hedged items recorded in interest expense | 24,451 | (16,391) | (116,500) | (98,094)
Derivatives recorded in interest expense | (24,458) | 16,610 | 116,870 | 97,947
Trading |  |  |  |
Total | 23,844 | (2,705) | 48,276 | (10,959)
Designated as Hedging Instrument | Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent | Reclassification out of Accumulated Other Comprehensive Income |  |  |  |
Cash Flow Hedges |  |  |  |
Interest expense | (5,176) | 517 | (10,922) | 3,002
Trading |  |  |  |
Trading |  |  |  |
Change in fair value of future interest payments recorded in earnings | (12,848) | 2,844 | 21,611 | 25,288
Total | $ (12,848) | $ 2,844 | $ 21,611 | $ 25,288

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