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Derivative and Hedging Activities - Narrative (Details)
Dec. 31, 2021
USD ($)
derivative
counterparty
Dec. 31, 2020
USD ($)
derivative
Derivative [Line Items]    
Cash collateral for borrowed securities | $ $ 0 $ 0
Credit risk    
Derivative [Line Items]    
Number of counterparties in hedge facility | counterparty 10  
Designated as hedging instrument    
Derivative [Line Items]    
Number of derivative instruments | derivative 0 0