v3.26.1
Capital structure and noncontrolling interests - Schedule of Noncontrolling Interests (Details) - USD ($)
$ / shares in Units, $ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Mar. 31, 2026
Jun. 30, 2025
Mar. 31, 2025
Jun. 30, 2026
Jun. 30, 2025
Equity, Attributable to Noncontrolling Interest [Roll Forward]            
Balance, beginning of period $ 967 $ 990 $ 1,019 $ 1,013 $ 990 $ 1,013
Stock-based compensation 23 30 29 40    
Other comprehensive income (loss) (25) (28) 170 47    
Expiration of redemption option     6      
Net income (loss) (32) (51) (7) 0 (83) (7)
Reallocation of noncontrolling interests 0 0 0 0    
OP Units reclassification   0 0      
Balance, end of period $ 981 $ 967 $ 1,022 $ 1,019 981 1,022
Operating Partnership Units            
Equity, Attributable to Noncontrolling Interest [Roll Forward]            
Distributions (in dollars per share) $ 0.53 $ 0.53 $ 0.53 $ 0.53    
Operating Partnership Equivalent Unit (OPEU)            
Equity, Attributable to Noncontrolling Interest [Roll Forward]            
Distributions (in dollars per share) $ 0.53 $ 0.53 $ 0.53 $ 0.53    
Total Noncontrolling Interests            
Equity, Attributable to Noncontrolling Interest [Roll Forward]            
Distributions $ (13) $ (13) $ (13) $ (14)    
Stock-based compensation 9 13 7 21    
Other comprehensive income (loss) (3) (3) 18 5    
Expiration of redemption option     6      
Net income (loss) (3) (5) (1)      
Reallocation of noncontrolling interests 24 (10) (7) (6)    
OP Units reclassification   (5) (7)      
Operating Partnership Units            
Equity, Attributable to Noncontrolling Interest [Roll Forward]            
Balance, beginning of period 903 925 951 944 925 944
Distributions (12) (12) (12) (13)    
Stock-based compensation 9 13 7 21    
Other comprehensive income (loss) (3) (3) 17 5    
Expiration of redemption option     6      
Net income (loss) (3) (5) (1)      
Reallocation of noncontrolling interests 24 (10) (7) (6)    
OP Units reclassification   (5) (7)      
Balance, end of period 918 903 954 951 918 954
Noncontrolling Interests in Other Consolidated Subsidiaries            
Equity, Attributable to Noncontrolling Interest [Roll Forward]            
Balance, beginning of period 12 12 14 14 12 14
Distributions 0 0 0 0    
Stock-based compensation 0 0 0 0    
Other comprehensive income (loss) 0 0 0 0    
Expiration of redemption option     0      
Net income (loss) 0 0 0      
Reallocation of noncontrolling interests 0 0 0 0    
OP Units reclassification   0 0      
Balance, end of period 12 12 14 14 12 14
Noncontrolling Interest in Other Consolidated Subsidiaries - OPEU            
Equity, Attributable to Noncontrolling Interest [Roll Forward]            
Balance, beginning of period 52 53 54 55 53 55
Distributions (1) (1) (1) (1)    
Stock-based compensation 0 0 0 0    
Other comprehensive income (loss) 0 0 1 0    
Expiration of redemption option     0      
Net income (loss) 0 0 0      
Reallocation of noncontrolling interests 0 0 0 0    
OP Units reclassification   0 0      
Balance, end of period $ 51 $ 52 $ 54 $ 54 $ 51 $ 54