Variable Interest Entities - Consolidated Variable Interest Entity Asset and Liability Information (Details) $ in Millions	Sep. 30, 2025 USD ($) instrument	Dec. 31, 2024 USD ($) instrument
Disclosure of Variable Interest Entities Assets and Liabilities [Line Items]
Carrying Value	$ 10,427	$ 9,677
Variable Interest Entity, Primary Beneficiary
Disclosure of Variable Interest Entities Assets and Liabilities [Line Items]
Number of Instruments | instrument	1	1
Notional Amounts	$ 496	$ 522
Carrying Value	$ 0	$ 0