Annual report pursuant to Section 13 and 15(d)

Shareholders' Deficit - Additional Information (Detail)

v3.24.0.1
Shareholders' Deficit - Additional Information (Detail) - USD ($)
$ / shares in Units, $ in Millions
 1 Months Ended 12 Months Ended
Aug. 31, 2022
Jan. 31, 2021
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Feb. 09, 2021
Stockholders Equity [Line Items]            
Repurchase of common stock, shares         20,400,000  
Common shares, shares outstanding     99,200,000 97,900,000 100,800,000  
Preference shares authorized     7,500,000      
Preference shares par value     $ 0.002      
Share repurchase program authorized amount           $ 1,500.0
Share repurchase program, remaining authorized capacity     $ 985.5      
Share repurchase program expiration date     Feb. 09, 2024      
Shares repurchases, value     $ 11.0 $ 146.7 $ 1,011.3  
Share repurchases     $ 11.0 $ 146.7 $ 1,011.3  
Repurchase of common stock, shares     600,000 4,100,000 21,000,000  
Treasury stock shares, at cost         10,000,000  
Treasury Stock, Shares, Retired 10,000,000   10,000,000      
Decrease in value of treasury stock         $ (328.9)  
Shares repurchases, inclusive of transaction costs     $ 0.0 $ 131.8 982.7  
Withheld for tax purpose for share-based compensation plans     1.0 14.9 28.6  
Repurchase of common stock, value     11.0 146.7 1,011.3  
Other comprehensive income (loss) before foreign currency translation adjustments reclassifications, tax expense (benefit)     1.3 1.1 0.2  
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, Tax     0.2      
Common Stock[Member]            
Stockholders Equity [Line Items]            
Repurchase of common stock, value     $ 0.0 $ 0.0 $ 0.0  
Open market purchases [Member] | Common Stock[Member]            
Stockholders Equity [Line Items]            
Repurchase of common stock, shares     0 3,700,000    
Share price     $ 35.73   $ 48.17  
Repurchase of common stock, shares         7,900,000  
Repurchase of common stock, value     $ 131.8   $ 382.7  
Open market purchases [Member] | Indirect wholly owned subsidiary [Member]            
Stockholders Equity [Line Items]            
Repurchase of common stock Per share         $ 48.10  
Repurchase of common stock, value         $ 982.7  
Icahn Parties [Member] | Common Stock[Member]            
Stockholders Equity [Line Items]            
Share price   $ 48.05        
Repurchase of common stock, shares   12,500,000        
Repurchase of common stock, value   $ 600.0