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Debt - Schedule of Long-Term Debt (Details) - USD ($)
$ in Millions
 9 Months Ended
Sep. 30, 2024
Dec. 31, 2023
Debt Instrument [Line Items]    
Weighted average interest rate (as a percent) 5.27% 6.06%
Total debt [1] $ 21,389 $ 21,995
Less: unamortized debt issuance costs (549) (543)
Total debt, net of unamortized debt issuance costs 20,840 21,452
Less—current portion (1,868) (1,720)
Long-term portion 18,972 19,732
Total fixed rate debt    
Debt Instrument [Line Items]    
Long-term debt $ 18,046 16,618
Unsecured senior notes    
Debt Instrument [Line Items]    
Weighted average interest rate (as a percent) [2] 5.59%  
Long-term debt $ 9,699 7,899
Secured senior notes    
Debt Instrument [Line Items]    
Weighted average interest rate (as a percent) [2] 0.00%  
Long-term debt $ 0 1,000
Unsecured term loans    
Debt Instrument [Line Items]    
Weighted average interest rate (as a percent) [2] 3.25%  
Long-term debt $ 8,024 6,569
Convertible notes    
Debt Instrument [Line Items]    
Weighted average interest rate (as a percent) [2] 6.00%  
Long-term debt $ 323 1,150
Total variable rate debt    
Debt Instrument [Line Items]    
Long-term debt $ 2,993 5,008
Unsecured Revolving Credit Facilities    
Debt Instrument [Line Items]    
Weighted average interest rate (as a percent) [2],[3] 6.48%  
Long-term debt [3] $ 210 899
Unsecured Revolving Credit Facilities | Unsecured Revolving Credit Facility Due 2024    
Debt Instrument [Line Items]    
Credit adjustment spread (as a percent) 0.10%  
Margin on floating rate base (as a percent) 1.33%  
Facility fee (as a percent) 0.17%  
USD unsecured term loan    
Debt Instrument [Line Items]    
Weighted average interest rate (as a percent) [2] 6.52%  
Long-term debt $ 2,522 3,666
Euro unsecured term loan    
Debt Instrument [Line Items]    
Weighted average interest rate (as a percent) [2] 4.95%  
Long-term debt $ 261 443
Finance lease liabilities    
Debt Instrument [Line Items]    
Long-term debt $ 350 $ 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) 6.28%  
[1] At September 30, 2024 and December 31, 2023, the weighted average interest rate for total debt was 5.27% and 6.06%, respectively
[2] Weighted average interest rates are based on outstanding loan balance as of September 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 September 30, 2024, the interest rate under the unsecured credit facilities was 6.28%. We also pay a facility fee of 0.17% of the total commitments under such facility.