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Recent Accounting Pronouncements - ASU 2018-12 Transition Narrative (Details) - USD ($)
$ in Millions
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2020
New Accounting Pronouncements or Change in Accounting Principle [Line Items]      
Adjustment to increase opening retained earnings $ 6,908 $ 6,116  
Cumulative Effect, Period of Adoption, Adjustment | Retained Earnings      
New Accounting Pronouncements or Change in Accounting Principle [Line Items]      
Adjustment to increase opening retained earnings     $ 75