v3.25.2
Fair Value Measurements - The carrying value and fair value of financial instruments (Details) - USD ($)
$ in Millions
Jun. 30, 2025
Dec. 31, 2024
Financial assets:    
Mortgage loans $ 909 $ 791
Long-term debt 1,476 1,475
Level 1    
Financial assets:    
Cash and cash equivalents 1,268 1,406
Mortgage loans 0 0
Total financial assets not accounted for at fair value 1,268 1,406
Long-term debt 0 0
Total financial liabilities not accounted for at fair value 0 0
Level 2    
Financial assets:    
Cash and cash equivalents 0 0
Mortgage loans 0 0
Total financial assets not accounted for at fair value 0 0
Long-term debt 1,232 1,273
Total financial liabilities not accounted for at fair value 1,232 1,273
Level 3    
Financial assets:    
Cash and cash equivalents 0 0
Mortgage loans 881 754
Total financial assets not accounted for at fair value 881 754
Long-term debt 3 3
Total financial liabilities not accounted for at fair value 3 3
Carrying Value    
Financial assets:    
Cash and cash equivalents 1,268 1,406
Mortgage loans 909 791
Total financial assets not accounted for at fair value 2,177 2,197
Long-term debt 1,476 1,475
Total financial liabilities not accounted for at fair value 1,476 1,475
Fair Value    
Financial assets:    
Cash and cash equivalents 1,268 1,406
Mortgage loans 881 754
Total financial assets not accounted for at fair value 2,149 2,160
Long-term debt 1,235 1,276
Total financial liabilities not accounted for at fair value $ 1,235 $ 1,276