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Fair value measurements - Notional Amounts and Fair Values of Derivatives by Product (Details) - Not Designated as Hedging Instrument - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Derivatives, Fair Value [Line Items]
Derivatives asset, Notional	$ 17,050	$ 14,300
Derivatives asset, Fair Value	1,762	92
Derivative liability, notional	1,914,275	3,534,300
Derivative liability, Fair Value	1,805	368
Other contracts | TBAs
Derivatives, Fair Value [Line Items]
Derivatives asset, Notional	1,775	14,300
Derivatives asset, Fair Value	1,762	92
Derivative liability, notional	1,775	14,300
Derivative liability, Fair Value	1,761	81
Other contracts | Forward reverse repurchase agreements
Derivatives, Fair Value [Line Items]
Derivatives asset, Notional	15,000
Derivatives asset, Fair Value	0
Other contracts | Other
Derivatives, Fair Value [Line Items]
Derivatives asset, Notional	275
Derivatives asset, Fair Value	0
Commodity contracts | Futures
Derivatives, Fair Value [Line Items]
Derivative liability, notional	1,912,500	3,520,000
Derivative liability, Fair Value	$ 44	$ 287

X

- Definition

Nominal or face amount used to calculate payments on the derivative asset.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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