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Real Estate and Real Estate Partnerships - Schedule of Carrying Amount of Investment Real Estate, Net (Details) - USD ($) $ in Millions | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2024 | Dec. 31, 2023
Real Estate [Line Items] |  |
Real Estate | $ 2,008 | $ 755
Real estate partnerships | 4,466 | 2,856
Total real estate and real estate partnerships | $ 6,474 | $ 3,611
Real estate | Industry sector |  |
Real Estate [Line Items] |  |
Percentage | 100.00% | 100.00%
Hotel |  |
Real Estate [Line Items] |  |
Real Estate | $ 124 | $ 14
Hotel | Real estate | Industry sector |  |
Real Estate [Line Items] |  |
Percentage | 6.00% | 2.00%
Industrial |  |
Real Estate [Line Items] |  |
Real Estate | $ 20 | $ 65
Industrial | Real estate | Industry sector |  |
Real Estate [Line Items] |  |
Percentage | 1.00% | 9.00%
Land |  |
Real Estate [Line Items] |  |
Real Estate | $ 127 | $ 37
Land | Real estate | Industry sector |  |
Real Estate [Line Items] |  |
Percentage | 6.00% | 5.00%
Office |  |
Real Estate [Line Items] |  |
Real Estate | $ 177 | $ 358
Office | Real estate | Industry sector |  |
Real Estate [Line Items] |  |
Percentage | 9.00% | 47.00%
Retail |  |
Real Estate [Line Items] |  |
Real Estate | $ 216 | $ 218
Retail | Real estate | Industry sector |  |
Real Estate [Line Items] |  |
Percentage | 11.00% | 29.00%
Apartment |  |
Real Estate [Line Items] |  |
Real Estate | $ 47 | $ 60
Apartment | Real estate | Industry sector |  |
Real Estate [Line Items] |  |
Percentage | 2.00% | 8.00%
Single family residential |  |
Real Estate [Line Items] |  |
Real Estate | $ 1,282 | $ 0
Single family residential | Real estate | Industry sector |  |
Real Estate [Line Items] |  |
Percentage | 64.00% | 0.00%
Other |  |
Real Estate [Line Items] |  |
Real Estate | $ 15 | $ 3
Other | Real estate | Industry sector |  |
Real Estate [Line Items] |  |
Percentage | 1.00% | 0.00%

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- Definition Amount of real estate investment property, net of accumulated depreciation, which may include the following: (1) land available-for-sale; (2) land available-for-development; (3) investments in building and building improvements; (4) tenant allowances; (5) developments in-process; (6) rental properties; and (7) other real estate investments. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(1)(d)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(1)(6)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1 + Details
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