v3.26.1
Equity (Accumulated Other Comprehensive Income) (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Beginning balance $ 66,479 $ 60,460
Net other comprehensive income (loss) (25) 12
Ending balance 66,632 60,305
Net Unrealized Gains (Losses) on Cash Flow Hedges    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Beginning balance 19 23
Other comprehensive income (loss), before reclassifications 0 0
Amounts reclassified from AOCI   0
Net other comprehensive income (loss) 0 0
Ending balance 19 23
Net Unrealized Gains (Losses) on Available for Sale Securities    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Beginning balance 0 (37)
Other comprehensive income (loss), before reclassifications (17) 9
Amounts reclassified from AOCI   3
Net other comprehensive income (loss) (17) 12
Ending balance (17) (25)
Defined Benefit Pension and Other Benefits Plans    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Beginning balance 33 (19)
Other comprehensive income (loss), before reclassifications 0 0
Amounts reclassified from AOCI   0
Net other comprehensive income (loss) 0 0
Ending balance 33 (19)
Net Unrealized Gains (Losses) on Foreign Currency Translation    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Beginning balance (72) (101)
Other comprehensive income (loss), before reclassifications (8) 0
Amounts reclassified from AOCI   0
Net other comprehensive income (loss) (8) 0
Ending balance (80) (101)
Other Comprehensive Income (Loss) Related to Equity Method Investees    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Beginning balance 11 8
Other comprehensive income (loss), before reclassifications 0 0
Amounts reclassified from AOCI   0
Net other comprehensive income (loss) 0 0
Ending balance 11 8
Total    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Beginning balance (9) (126)
Other comprehensive income (loss), before reclassifications (25) 9
Amounts reclassified from AOCI   3
Net other comprehensive income (loss) (25) 12
Ending balance $ (34) $ (114)