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Debt (Schedule of Long-Term Debt) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Long-Term Debt    
Weighted average interest rate (as a percent) 5.03% 6.06%
Total debt [1] $ 20,604 $ 21,995
Less: unamortized debt issuance costs (528) (543)
Total debt, net of unamortized debt issuance costs 20,076 21,452
Less—current portion (1,603) (1,720)
Long-term portion 18,473 19,732
Fixed rate debt:    
Long-Term Debt    
Long-term debt $ 17,708 16,618
Unsecured senior notes    
Long-Term Debt    
Weighted average interest rate (as a percent) 5.59%  
Long-term debt $ 9,699 7,899
Secured senior notes    
Long-Term Debt    
Weighted average interest rate (as a percent) 0.00%  
Long-term debt $ 0 1,000
Unsecured term loans    
Long-Term Debt    
Weighted average interest rate (as a percent) 3.27%  
Long-term debt $ 7,687 6,569
Convertible notes    
Long-Term Debt    
Weighted average interest rate (as a percent) 6.00%  
Long-term debt $ 322 1,150
Total variable rate debt    
Long-Term Debt    
Long-term debt $ 2,779 5,008
Unsecured revolving credit facilities    
Long-Term Debt    
Weighted average interest rate (as a percent) 5.91%  
Long-term debt [2] $ 340 899
Unsecured revolving credit facilities | Unsecured Revolving Credit Facility Due 2024    
Long-Term Debt    
Credit adjustment spread 0.10%  
Margin on floating rate base (as a percent) 1.33%  
Long term debt, facility fee (as a percent) 0.17%  
USD unsecured term loans    
Long-Term Debt    
Weighted average interest rate (as a percent) 6.02%  
Long-term debt $ 2,227 3,666
Euro unsecured term loans    
Long-Term Debt    
Weighted average interest rate (as a percent) 3.97%  
Long-term debt $ 212 443
Finance lease liabilities    
Long-Term Debt    
Long-term debt $ 117 $ 369
Maximum | Unsecured revolving credit facilities | Unsecured Revolving Credit Facility Due 2024    
Long-Term Debt    
Interest rate 5.77%  
[1] At December 31, 2024 and 2023, the weighted average interest rate for total debt was 5.03% and 6.06%, respectively.
[2] Advances under our unsecured revolving credit facilities accrue interest at Term SOFR plus a 0.10% credit adjustment spread plus an interest rate margin of 1.33%. Based on applicable Term SOFR rates, as of December 31, 2024, the interest rate under the unsecured credit facilities was 5.77%. We also pay a facility fee of 0.17% of the total commitments under such facility.