v3.26.1
Basis of Presentation - Schedule of Cash, Cash Equivalents and Restricted Cash (Details) - USD ($)
$ in Millions
6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Dec. 31, 2024
Cash and Cash Equivalents [Line Items]        
Cash and cash equivalents $ 1,752   $ 19,048  
Restricted cash:        
Prepaid expenses and other 140   297  
Other assets 162   154  
Assets held for sale:        
Prepaid expenses and other 250   0  
Cash, cash equivalents and restricted cash 2,304 $ 3,931 $ 19,499 $ 4,635
Increase / (Decrease) in cash, cash equivalents and restricted cash (17,195) $ (704)    
Location, Statement of Financial Position, Activity, Capitalization [Axis]: us-gaap:CashAndCashEquivalentsAtCarryingValue        
Assets held for sale:        
Increase / (Decrease) in cash, cash equivalents and restricted cash (17,296)      
Location, Statement of Financial Position, Activity, Capitalization [Axis]: us-gaap:OtherAssetsNoncurrent        
Assets held for sale:        
Increase / (Decrease) in cash, cash equivalents and restricted cash 8      
Location, Statement of Financial Position, Activity, Capitalization [Axis]: us-gaap:PrepaidExpenseAndOtherAssetsCurrent        
Assets held for sale:        
Increase / (Decrease) in cash, cash equivalents and restricted cash (157)      
Increase / (Decrease) in assets held-for-sale $ 250