v3.26.1
Cash and Cash Equivalents and Restricted Cash and Cash Equivalents - NPC (Details) - USD ($)
$ in Millions
Jun. 30, 2026
Dec. 31, 2025
Jun. 30, 2025
Dec. 31, 2024
Condensed Cash Flow Statements, Captions [Line Items]        
Cash and cash equivalents $ 4,072 $ 1,695    
Restricted cash and cash equivalents included in other current assets 151 168    
Total cash and cash equivalents and restricted cash and cash equivalents 4,238 1,878 $ 2,420 $ 1,586
NPC        
Condensed Cash Flow Statements, Captions [Line Items]        
Cash and cash equivalents 204 22    
Restricted cash and cash equivalents included in other current assets 8 13    
Total cash and cash equivalents and restricted cash and cash equivalents $ 212 $ 35 $ 98 $ 42