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Debt - Schedule of Long-Term Debt (Details) - USD ($)
$ in Millions
 6 Months Ended
Jun. 30, 2025
Dec. 31, 2024
Debt Instrument [Line Items]    
Weighted average interest rate (as a percent) 4.64% 5.03%
Total debt [1] $ 19,503 $ 20,604
Less: unamortized debt issuance costs (489) (528)
Total debt, net of unamortized debt issuance costs 19,014 20,076
Less—current portion (1,402) (1,603)
Long-term portion 17,612 18,473
Total fixed rate debt    
Debt Instrument [Line Items]    
Long-term debt $ 17,137 17,708
Unsecured senior notes    
Debt Instrument [Line Items]    
Weighted average interest rate (as a percent) [2] 5.59%  
Long-term debt $ 9,699 9,699
Unsecured term loans    
Debt Instrument [Line Items]    
Weighted average interest rate (as a percent) [2] 3.25%  
Long-term debt $ 7,332 7,687
Convertible notes    
Debt Instrument [Line Items]    
Weighted average interest rate (as a percent) [2] 6.00%  
Long-term debt $ 106 322
Total variable rate debt    
Debt Instrument [Line Items]    
Long-term debt $ 2,251 2,779
Unsecured Revolving Credit Facilities    
Debt Instrument [Line Items]    
Weighted average interest rate (as a percent) [2],[3] 0.00%  
Long-term debt [3] $ 0 340
Unsecured Revolving Credit Facilities | Unsecured Revolving Credit Facility Due 2024    
Debt Instrument [Line Items]    
Margin on floating rate base (as a percent) 1.10%  
Facility fee (as a percent) 0.15%  
USD unsecured term loans    
Debt Instrument [Line Items]    
Weighted average interest rate (as a percent) [2] 5.67%  
Long-term debt $ 2,046 2,227
Euro unsecured term loan    
Debt Instrument [Line Items]    
Weighted average interest rate (as a percent) [2] 3.28%  
Long-term debt $ 205 212
Finance lease liabilities    
Debt Instrument [Line Items]    
Long-term debt $ 115 $ 117
Maximum | Unsecured Revolving Credit Facilities | Unsecured Revolving Credit Facility Due 2024    
Debt Instrument [Line Items]    
Long term debt, stated interest rate (as a percent) 5.42%  
[1] At June 30, 2025 and December 31, 2024, the weighted average interest rate for total debt was 4.64% and 5.03%, respectively
[2] Weighted average interest rates are based on outstanding loan balance as of June 30, 2025, and for variable rate debt include either EURIBOR or Term SOFR plus the applicable margin.
[3] Advances under our unsecured revolving credit facilities accrue interest at Term SOFR plus an interest rate margin of 1.10%. Based on applicable Term SOFR rates, as of June 30, 2025, the interest rate under the unsecured credit facilities was 5.42%. We also pay a facility fee of 0.15% of the total commitments under such facility.