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Business Acquisitions, Investments and Restructuring Charges - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Dec. 31, 2024
Business Combination [Line Items]          
Capital contributions to equity method investment     $ 170 $ 236  
Income (loss) from unconsolidated equity method investments $ (57) $ (73) (72) (116)  
Restructuring charges 3 8 13 20  
Restructuring expenditures     10 18  
Certain Limited Liability Companies          
Business Combination [Line Items]          
Income (loss) from unconsolidated equity method investments (50) $ (75) (55) (117)  
Joint Venture with Landfill Gas to Energy Developer          
Business Combination [Line Items]          
Capital contributions to equity method investment     50    
Equity method investments 310   310   $ 270
Joint Venture with Landfill Gas to Energy Developer | Illinois          
Business Combination [Line Items]          
Capital contributions to equity method investment     5 34  
Equity method investments 39   39   35
Ravago, Blue Polymers          
Business Combination [Line Items]          
Capital contributions to equity method investment     40 $ 28  
Equity method investments $ 88   $ 88   $ 55