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Derivative Instruments - Non-hedge Derivatives (Details) - Not Designated as Hedging Instrument - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Derivative [Line Items] |  |  |  |
Derivative, Gain (Loss) on Derivative, Net | $ 53 |  | $ 846 | $ (1,109)
Notional | 3,241,040 |  | 3,081,984 |
Estimated fair value | (56,720) | [1] | (471) |
Assets |  |  |  |
Derivative [Line Items] |  |  |  |
Notional | 1,620,520 |  | 1,540,992 |
Estimated fair value | 39,763 | [1] | 39,770 |
Liabilities |  |  |  |
Derivative [Line Items] |  |  |  |
Notional | 1,620,520 |  | 1,540,992 |
Estimated fair value | $ (96,483) | [1] | $ (40,241) |
[1] | The variation margin payments for derivatives cleared through central clearing houses are characterized as settlements. At December 31, 2022, the notional amount of interest rate swap agreements designated as non-hedge derivatives cleared through clearing houses is $827.3 million with a fair value that approximates zero due to $56.3 million in received variation margin payments.

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- Definition Amount of increase (decrease) in the fair value of derivatives recognized in the income statement. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b)(1) -URI https://asc.fasb.org/extlink&oid=125515794&loc=SL5618551-113959 + Details
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- Definition Nominal or face amount used to calculate payment on derivative. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1B -URI https://asc.fasb.org/extlink&oid=125515794&loc=SL5580258-113959 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (d) -URI https://asc.fasb.org/extlink&oid=125515794&loc=SL5579245-113959 + Details
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- Definition Fair value as of the balance sheet date of interest rate derivative assets, net of interest rate derivative liabilities, which includes all such derivative instruments in hedging and nonhedging relationships that are recognized on the balance sheet. + References No definition available. + Details
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