v3.26.3
Equity (Accumulated Other Comprehensive Income) (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Beginning balance $ 68,095 $ 60,883 $ 66,479 $ 60,460
Net other comprehensive income (loss) (65) (2) (104) 54
Ending balance 72,865 64,596 72,865 64,596
Net Unrealized Gains (Losses) on Cash Flow Hedges        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Beginning balance 20 24 19 23
Other comprehensive income (loss), before reclassifications 0 0 0 0
Amounts reclassified from AOCI 0 0 1 1
Net other comprehensive income (loss) 0 0 1 1
Ending balance 20 24 20 24
Net Unrealized Gains (Losses) on Available for Sale Securities        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Beginning balance (20) (15) 0 (37)
Other comprehensive income (loss), before reclassifications (65) 10 (87) 28
Amounts reclassified from AOCI 1 1 3 5
Net other comprehensive income (loss) (64) 11 (84) 33
Ending balance (84) (4) (84) (4)
Defined Benefit Pension and Other Benefits Plans        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Beginning balance 33 (19) 33 (19)
Other comprehensive income (loss), before reclassifications 0 0 0 0
Amounts reclassified from AOCI 0 0 0 0
Net other comprehensive income (loss) 0 0 0 0
Ending balance 33 (19) 33 (19)
Net Unrealized Gains (Losses) on Foreign Currency Translation        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Beginning balance (92) (68) (72) (101)
Other comprehensive income (loss), before reclassifications (1) (13) (21) 20
Amounts reclassified from AOCI 0 0 0 0
Net other comprehensive income (loss) (1) (13) (21) 20
Ending balance (93) (81) (93) (81)
Other Comprehensive Income (Loss) Related to Equity Method Investees        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Beginning balance 11 8 11 8
Other comprehensive income (loss), before reclassifications 0 0 0 0
Amounts reclassified from AOCI 0 0 0 0
Net other comprehensive income (loss) 0 0 0 0
Ending balance 11 8 11 8
Total        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Beginning balance (48) (70) (9) (126)
Other comprehensive income (loss), before reclassifications (66) (3) (108) 48
Amounts reclassified from AOCI 1 1 4 6
Net other comprehensive income (loss) (65) (2) (104) 54
Ending balance $ (113) $ (72) $ (113) $ (72)