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Investments - Narrative (Details) - USD ($) $ in Millions | 9 Months Ended
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Sep. 30, 2024 | Sep. 30, 2023
Net Investment Income [Line Items] |  |
Payments to acquire investments | $ 1,751 | $ 14,485
Proceeds from investments | 4,546 | 10,497
Time Deposits |  |
Net Investment Income [Line Items] |  |
Payments to acquire investments | 1,298 | 13,964
Proceeds from investments | $ 4,053 | $ 10,022

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- Definition The cash outflow associated with the purchase of all investments (debt, security, other) during the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 13 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-13 + Details
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