Variable Interest Entities and Asset Securitizations - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Loss on securitization of assets	$ 0
Other assets for its "investment" in the common securities recognized by the company of various trusts	22,000,000	$ 23,000,000
Total assets of partnerships in which the company invested	200,729,841,000	155,107,160,000
Investment in partnership carrying amount	1,500,000,000	933,000,000
Unfunded commitments includes carrrying amount of its investments	545,000,000	361,000,000
Maximum exposure to loss of investments in real estate partnerships	1,900,000,000
Variable Interest Entity Primary Beneficiary [Member]
Total assets of partnerships in which the company invested	$ 9,200,000,000	$ 3,000,000,000.0