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Fair Value Measurements Narrative (Details) - USD ($)
$ in Millions
9 Months Ended
Sep. 30, 2023
Dec. 31, 2022
Fair Value Measurements [Abstract]    
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net $ 0  
Debt obligations, fair value 44,600 $ 45,420
Long-term Debt $ 48,080 $ 48,260