v3.26.1
Derivatives and Hedging (Current Period Cash Flow Hedges in AOCI (loss) before Taxes) (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]        
Beginning Balance $ 32,319 $ 30,203 $ 32,787 $ 28,187
Ending Balance 31,935 $ 30,903 31,935 $ 30,903
Derivatives designated as cash flow hedges        
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]        
Beginning Balance     (231)  
Total amount recorded in AOCI     570  
Total amount reclassified from AOCI to income     (198)  
Ending Balance $ 141   141  
Interest Rate | Derivatives designated as cash flow hedges        
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]        
Total amount recorded in AOCI     (3)  
Total amount reclassified from AOCI to income     4  
Currency | Derivatives designated as cash flow hedges        
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]        
Total amount recorded in AOCI     24  
Total amount reclassified from AOCI to income     6  
Currency/Interest Rate | Derivatives designated as cash flow hedges        
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]        
Total amount recorded in AOCI     549  
Total amount reclassified from AOCI to income     $ (208)