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Other Assets and Liabilities - Narrative (Details) $ in Millions		3 Months Ended			6 Months Ended		12 Months Ended
	Jul. 01, 2022 USD ($)	Jun. 30, 2024 USD ($)	Dec. 31, 2023 transaction	Dec. 31, 2021 transaction	Jun. 30, 2024 USD ($) partnership transaction	Jun. 30, 2023 USD ($)	Dec. 31, 2023 transaction	Dec. 31, 2021 transaction	Dec. 31, 2019 USD ($)	Dec. 31, 2018 partnership
Other Assets and Other Liabilities [Line Items]
Intangible Assets at Acquisition									$ 95
Amortization of intangible assets					$ 5	$ 6
Number of partnerships consolidated | partnership					2					2
Co-investors gains		$ 3			$ 4
Number of securitization transactions co-sponsored | transaction			2	2	2		2	2
Riverbend Funding, LLC
Other Assets and Other Liabilities [Line Items]
Goodwill acquired during the period	$ 23
Co-Investors Interests
Other Assets and Other Liabilities [Line Items]
Carrying value of interests		25			$ 25
HEI Securitization Non-Controlling Interest
Other Assets and Other Liabilities [Line Items]
Carrying value of interests		72			72
Co-investors gains		$ 7			$ 13

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