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Debt - Schedule of Long-term Debt (Details) - USD ($)
$ in Millions
 6 Months Ended
Jun. 30, 2024
Dec. 31, 2023
Debt Instrument [Line Items]    
Weighted average interest rate (as a percent) 5.64% 6.06%
Total debt [1] $ 21,688 $ 21,995
Less: unamortized debt issuance costs (571) (543)
Total debt, net of unamortized debt issuance costs 21,117 21,452
Less—current portion (1,332) (1,720)
Long-term portion 19,785 19,732
Total fixed rate debt    
Debt Instrument [Line Items]    
Long-term debt $ 18,182 16,618
Unsecured senior notes    
Debt Instrument [Line Items]    
Weighted average interest rate (as a percent) [2] 6.09%  
Long-term debt $ 7,899 7,899
Secured senior notes    
Debt Instrument [Line Items]    
Weighted average interest rate (as a percent) [2] 8.25%  
Long-term debt $ 1,000 1,000
Unsecured term loans    
Debt Instrument [Line Items]    
Weighted average interest rate (as a percent) [2] 3.26%  
Long-term debt $ 8,133 6,569
Convertible notes    
Debt Instrument [Line Items]    
Weighted average interest rate (as a percent) [2] 6.00%  
Long-term debt $ 1,150 1,150
Total variable rate debt    
Debt Instrument [Line Items]    
Long-term debt $ 3,149 5,008
Unsecured revolving credit facilities    
Debt Instrument [Line Items]    
Weighted average interest rate (as a percent) [2],[3] 6.76%  
Long-term debt [3] $ 325 899
Unsecured revolving credit facilities | Unsecured Revolving Credit Facility Due 2024    
Debt Instrument [Line Items]    
Credit adjustment spread 0.10%  
Margin on floating rate base (as a percent) 1.33%  
Facility fee 0.17%  
USD unsecured term loan    
Debt Instrument [Line Items]    
Weighted average interest rate (as a percent) [2] 6.81%  
Long-term debt $ 2,574 3,666
Euro unsecured term loan    
Debt Instrument [Line Items]    
Weighted average interest rate (as a percent) [2] 4.95%  
Long-term debt $ 250 443
Finance lease liabilities    
Debt Instrument [Line Items]    
Long-term debt $ 357 $ 369
Maximum | Unsecured revolving credit facilities | Unsecured Revolving Credit Facility Due 2024    
Debt Instrument [Line Items]    
Long term debt, stated interest rate (as a percent) 6.77%  
[1] At June 30, 2024 and December 31, 2023, the weighted average interest rate for total debt was 5.64% and 6.06%, respectively
[2] Weighted average interest rates are based on outstanding loan balance as of June 30, 2024, 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 a 0.10% credit adjustment spread plus an interest rate margin of 1.33%. Based on applicable Term SOFR rates, as of June 30, 2024, the maximum interest rate under the unsecured credit facilities was 6.77%. We also pay a facility fee of 0.17% of the total commitments under such facility.