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Fair Value - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2024
Jun. 30, 2023
Jun. 30, 2024
Jun. 30, 2023
Fair Value Disclosures [Abstract]        
Transfers into Level 3 $ 0   $ 0  
Transfers out of Level 3 $ 0 $ 13 $ 0 $ 42