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Stock Incentive Plans - Narrative (Details) - USD ($)
shares in Millions, $ in Millions
1 Months Ended 3 Months Ended
Mar. 31, 2022
Jun. 30, 2022
Mar. 31, 2022
Mar. 31, 2021
Dec. 31, 2021
Stock Incentive Plans Narratives [Abstract]          
Compensation expense     $ 77.0 $ 64.0  
Unrecognized compensation expense $ 547.0   $ 547.0    
Weighted-average period for total unrecognized compensation expense for nonvested equity awards     1 year 10 months 24 days    
Cruise Stock Incentive Awards | Stock options          
Stock Incentive Plans Narratives [Abstract]          
Expiration period     10 years    
Dividend yield     0.00% 0.00%  
Expected volatility rate     57.30% 55.00%  
Risk-free interest rate     2.47% 0.78%  
Expected option life     6 years 6 months 25 days 6 years 3 months  
Cruise Stock Incentive Awards | Stock options | Minimum          
Stock Incentive Plans Narratives [Abstract]          
Service period     4 years    
Cruise Stock Incentive Awards | Stock options | Maximum          
Stock Incentive Plans Narratives [Abstract]          
Service period     10 years    
Cruise Stock Incentive Awards | Restricted Stock Units (RSUs)          
Stock Incentive Plans Narratives [Abstract]          
Numbers of awards that vested immediately 31.0        
Total units outstanding (in shares) 92.0   92.0   66.2
Cruise Stock Incentive Awards | Restricted Stock Units (RSUs) | Forecast          
Stock Incentive Plans Narratives [Abstract]          
Number of shares vested and expected to be settled   31.0      
Cruise Stock Incentive Awards | Restricted Stock Units (RSUs) | Maximum          
Stock Incentive Plans Narratives [Abstract]          
Service period 4 years        
Cruise Stock Incentive Awards | Stock options and RSUs          
Stock Incentive Plans Narratives [Abstract]          
Compensation expense     $ 1,200.0    
Unrecognized compensation expense $ 1,900.0   $ 1,900.0    
Weighted-average period for total unrecognized compensation expense for nonvested equity awards     2 years    
Total units outstanding (in shares) 119.0   119.0