Real Estate and Other Activities - Investments in Unconsolidated Operating Entities - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
PHP Holdings Equity Investment [Member]
Business Acquisition [Line Items]
Unfavorable fair market value adjustment on investment	$ (201)
Other [Member] | COVID-19 Pandemic [Member]
Business Acquisition [Line Items]
Favorable non-cash fair value adjustment on investment		$ 4
Unfavorable non-cash fair value adjustment on investment	$ 216