Unaudited Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2022	Mar. 31, 2021
Comprehensive Income
Net income (loss)	$ 197,432	$ 475,708
Unrealized appreciation (decline) in value of available-for-sale investments:
Unrealized holding gains (losses) arising during period	(684,355)	(261,750)
Reclassification of net realized (gains) losses, included in net income (loss)	102,278	2,697
Foreign currency translation adjustments	(2,768)	(28,584)
Comprehensive income (loss)	(387,413)	188,071
Net (income) loss attributable to noncontrolling interests	(1,632)	(37,552)
Other comprehensive (income) loss attributable to noncontrolling interests	0	4,570
Comprehensive income (loss) available to Arch	$ (389,045)	$ 155,089

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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