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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, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020
Cash Flow Hedges |  |  |  |
Interest expense | $ 90,037 | $ 117,811 | $ 290,987 | $ 428,649
Trading |  |  |  |
Total | 12,913 | 5,820 | 30,043 | 58,965
Designated as Hedging Instrument |  |  |  |
Fair Value Hedges |  |  |  |
Interest recognized on derivatives | 21,763 | 23,851 | 67,230 | 47,906
Hedged items recorded in interest expense | 20,551 | 24,451 | 72,774 | (116,500)
Derivatives recorded in interest expense | (20,602) | (24,458) | (72,787) | 116,870
Trading |  |  |  |
Total | 21,712 | 23,844 | 67,217 | 48,276
Designated as Hedging Instrument | Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent | Reclassification out of Accumulated Other Comprehensive Income |  |  |  |
Cash Flow Hedges |  |  |  |
Interest expense | (5,228) | (5,176) | (15,791) | (10,922)
Trading |  |  |  |
Trading |  |  |  |
Change in fair value of future interest payments recorded in earnings | (3,571) | (12,848) | (21,383) | 21,611
Total | $ (3,571) | $ (12,848) | $ (21,383) | $ 21,611

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