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Derivative financial instruments - Effects of derivatives recorded in interest expense (Details) - Interest rate caps and swaps - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Derivative Instruments, Gain (Loss) [Line Items]
Interest rate contracts	$ 2,874	$ 3,239	$ (10,757)	$ 39,309
Reclassification to Condensed Consolidated Income Statements:
Reclassification of amounts previously recorded within AOCI	29,348	(10,781)	47,005	(30,072)
Gain (loss) recognized in interest expense	$ 32,222	$ (7,542)	$ 36,248	$ 9,237

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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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-Topic 815
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-Name Accounting Standards Codification
-Section 50
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Amount of realized and unrealized gain (loss) of derivative instruments not designated or qualifying as hedging instruments.

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Aggregate net gain (loss) on all derivative instruments recognized in earnings during the period, before tax effects.

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The amount of net gain (loss) reclassified into earnings in the period when cash flow hedge is discontinued because it is probable that the original forecasted transactions will not occur by the end of the original period or an additional two month time period.

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