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Derivative financial instruments (Narrative) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Derivative [Line Items]
Derivative cash collateral, advanced to counterparties	$ 0	$ 0
Cash flow hedge gain (loss) to be reclassified within 12 months	$ 48,000,000
Minimum
Derivative [Line Items]
Derivative, variable benchmark interest duration	1 month
Maximum
Derivative [Line Items]
Derivative, variable benchmark interest duration	6 months

X

- Definition

Derivative, Variable Benchmark Interest, Duration

+ References

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- Definition

The estimated net amount of existing gains or losses on cash flow hedges at the reporting date expected to be reclassified to earnings within the next 12 months.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 30
-Section 50
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- Definition

Amount of right to receive cash collateral under master netting arrangements that have not been offset against derivative liabilities.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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-Section 50
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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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