Other Assets and Liabilities - Additional Information (Details) $ in Millions	3 Months Ended		12 Months Ended
	Mar. 31, 2023 USD ($) partnership	Mar. 31, 2022 USD ($)	Dec. 31, 2018 partnership
Other Assets and Other Liabilities [Line Items]
Number of partnerships consolidated | partnership	2		2
Co-investors gains (losses)	$ 1	$ 1
Co-Investors Interests
Other Assets and Other Liabilities [Line Items]
Carrying value of interests	23
Point HEI Noncontrolling Interest
Other Assets and Other Liabilities [Line Items]
Carrying value of interests	23
Co-investors gains (losses)	$ 1	$ 6