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Leases - Narrative (Details) - USD ($)
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Lessee, Lease, Description [Line Items]      
Operating lease expense $ 108,000,000 $ 349,000,000  
Cash paid for amounts included in the measurement of lease liabilities recorded as operating cash flows 227,000,000 378,000,000  
Right-of-use assets obtained in exchange for operating lease liability 69,000,000 40,000,000  
Lease liability for leases commenced 69,000,000 40,000,000  
Additional operating leases not yet commenced 8,000,000    
ROU asset impairments   40,000,000 $ 577,000,000
Remaining asset impairment charges $ 0 $ 97,000,000 $ 1,627,000,000
Weighted average remaining lease term 7 years 6 months    
Weighted average discount rate for operating leases 3.40%    
Maximum      
Lessee, Lease, Description [Line Items]      
Operating lease not yet commenced, term 5 years