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Balance Type:	na
Period Type:	duration

Fair Value Measurements (Narrative) (Details) - Real Estate Investments - USD ($)	Mar. 31, 2023	Dec. 31, 2022
Financial Assets and Liabilities Measured at Fair Value on a Recurring and Nonrecurring Basis
Real estate fund investments	$ 0
Level 3 \| Nonrecurring
Financial Assets and Liabilities Measured at Fair Value on a Recurring and Nonrecurring Basis
Real estate fund investments		$ 2,352,328,000