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Shareholders' Equity (Details) - USD ($)
$ / shares in Units, $ in Millions
 1 Months Ended 3 Months Ended 12 Months Ended
Feb. 28, 2025
Dec. 31, 2024
Sep. 30, 2024
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Jan. 01, 2022
Dec. 31, 2021
New Accounting Pronouncements or Change in Accounting Principle [Line Items]                
Shareholder's equity reduction   $ (7,735)   $ (7,735) $ (4,899) $ (2,869)   $ (5,087)
Common stock dividends declared (in dollars per share)   $ 0.55 $ 0.40 $ 0.95 $ 0 $ 0    
Proceeds from sale of noncontrolling interest       $ 0 $ 209 $ 0    
Subsequent Event                
New Accounting Pronouncements or Change in Accounting Principle [Line Items]                
Common stock dividends declared (in dollars per share) $ 0.75              
Stock repurchase program, authorized amount $ 1,000              
Port Of Miami                
New Accounting Pronouncements or Change in Accounting Principle [Line Items]                
Percentage of investment sold         80.00%      
Proceeds from sale of noncontrolling interest         $ 209      
Port Of Miami | Variable Interest Entity, Primary Beneficiary                
New Accounting Pronouncements or Change in Accounting Principle [Line Items]                
Ownership interest retained, percent         20.00%      
Cumulative Effect, Period of Adoption, Adjustment                
New Accounting Pronouncements or Change in Accounting Principle [Line Items]                
Shareholder's equity reduction             $ 162 $ 162