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Debt - Narrative (Details)
£ in Billions
12 Months Ended
Apr. 17, 2025
USD ($)
Mar. 08, 2024
USD ($)
Mar. 08, 2024
GBP (£)
Mar. 07, 2024
USD ($)
Mar. 07, 2024
GBP (£)
Dec. 31, 2025
USD ($)
Dec. 31, 2024
USD ($)
Dec. 31, 2023
USD ($)
Dec. 03, 2025
EUR (€)
Nov. 06, 2025
USD ($)
Nov. 05, 2025
USD ($)
Jul. 15, 2025
USD ($)
May 01, 2025
USD ($)
Debt Instrument                          
Other long-term debt           $ (192,000,000) $ (228,000,000)            
Weighted average interest rate, excluding cross currency interest rate swaps           3.80%              
Weighted average interest rate           3.00%              
Principal amount of debt redeemed           $ 54,348,000,000 33,175,000,000 $ 94,444,000,000          
Loss on extinguishment of debt           0 174,000,000 $ 0          
Difference in carrying value and fair value of long term debt           619,000,000 $ 806,000,000            
Revolving Credit Facility                          
Debt Instrument                          
Outstanding credit agreement                   $ 6,000,000,000.0 $ 4,500,000,000    
Additional term and revolving loan capacity in the future           4,056,000,000              
Line of credit facility, capacity backstopped           2,729,000,000              
Incremental Revolving Credit Facility                          
Debt Instrument                          
Outstanding credit agreement                   $ 1,000,000,000.0      
Senior Commercial Paper Notes                          
Debt Instrument                          
Commercial paper           7,000,000,000.0              
Outstanding credit agreement           215,000,000              
Line of Credit | Revolving Credit Facility                          
Debt Instrument                          
Mandatory principal payment           $ 0              
Line of Credit | Term Facility | Secured Debt                          
Debt Instrument                          
Outstanding credit agreement                         $ 8,000,000,000.0
Senior Notes                          
Debt Instrument                          
Senior note redemption price, percentage           100.00%              
Loss on extinguishment of debt   $ 174,000,000   $ 174,000,000                  
Senior Notes | Senior Euro Notes                          
Debt Instrument                          
Face amount of debt | €                 € 625,000,000        
Debt instrument, stated percentage                 0.625%        
Senior Notes | Senior USD Notes                          
Debt Instrument                          
Face amount of debt                       $ 287,000,000  
Debt instrument, stated percentage                       4.50%  
Principal amount of debt redeemed   $ 1,500,000,000   $ 1,500,000,000                  
Senior Notes | Senior GBP Notes                          
Debt Instrument                          
Principal amount of debt redeemed | £     £ 1.0   £ 1.0                
Senior Notes | Minimum                          
Debt Instrument                          
Make whole amount, trigger period prior to maturity           1 month              
Senior Notes | Minimum | Senior Euro Notes                          
Debt Instrument                          
Debt instrument, stated percentage           1.00%              
Senior Notes | Minimum | Senior USD Notes                          
Debt Instrument                          
Debt instrument, stated percentage           1.20%              
Senior Notes | Minimum | Senior GBP Notes                          
Debt Instrument                          
Debt instrument, stated percentage           2.30%              
Senior Notes | Minimum | Senior Euro Floating Rates Notes                          
Debt Instrument                          
Debt instrument, stated percentage   2.25% 2.25% 2.25% 2.25%                
Senior Notes | Maximum                          
Debt Instrument                          
Make whole amount, trigger period prior to maturity           6 months              
Senior Notes | Maximum | Senior Euro Notes                          
Debt Instrument                          
Debt instrument, stated percentage           3.00%              
Senior Notes | Maximum | Senior USD Notes                          
Debt Instrument                          
Debt instrument, stated percentage           5.60%              
Senior Notes | Maximum | Senior GBP Notes                          
Debt Instrument                          
Debt instrument, stated percentage           3.40%              
Senior Notes | Maximum | Senior Euro Floating Rates Notes                          
Debt Instrument                          
Debt instrument, stated percentage   5.625% 5.625% 5.625% 5.625%                
Bridge Loan | Senior Unsecured Bridge Term Loan Facility | Line of Credit                          
Debt Instrument                          
Outstanding credit agreement $ 8,000,000,000.0                       $ 0
Credit facility, expiration period 364 days