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Loss Per Share and Shareholders' Equity (Deficit) - Additional Information (Detail)
€ / shares in Units, $ / shares in Units, € in Millions, $ in Millions
 1 Months Ended 12 Months Ended
Sep. 20, 2023
USD ($)
shares
Nov. 04, 2019
shares
Aug. 23, 2019
USD ($)
shares
Sep. 30, 2023
USD ($)
shares
Dec. 31, 2020
shares
May 31, 2020
€ / shares
shares
Dec. 31, 2019
USD ($)
Jan. 31, 2012
€ / shares
shares
Dec. 31, 2023
USD ($)
$ / shares
shares
Dec. 31, 2023
EUR (€)
shares
Jan. 01, 2023
USD ($)
$ / shares
shares
Dec. 31, 2023
€ / shares
shares
Mar. 31, 2021
shares
Jan. 03, 2021
shares
Aug. 31, 2020
€ / shares
Dec. 31, 2019
€ / shares
shares
Dec. 29, 2019
shares
Nov. 30, 2019
€ / shares
shares
Aug. 31, 2019
€ / shares
shares
Class of Stock [Line Items]                                      
Vested shares , annual installments period               5 years                      
Incurred share issuance costs | $     $ 5                                
Common stock shares convertible from one class to another conversion ratio                 1.00% 1.00%                  
Share Repurchase Value | $ $ 12                                    
SHHL [Member]                                      
Class of Stock [Line Items]                                      
Common stock shares outstanding                           18,146,543          
Common stock shares convertible from one class to another conversion ratio                 1.00% 1.00%                  
Common Class A [Member]                                      
Class of Stock [Line Items]                                      
Common stock par or stated value per share | $ / shares                 $ 0.01   $ 0.01                
Common stock shares outstanding                 53,741,731   53,722,597 53,741,731              
Common stock shares issued                 64,208,851   62,189,717 64,208,851              
Conversion of non redeemable common stock shares from one class into another                 14,935,193 14,935,193                  
Stock repurchase program | $                     $ 50                
Share repurchase 2,000,000     2,000,000             8,467,120                
Share Repurchase Value | $       $ 12             $ 50                
Common Class A [Member] | SHHL [Member]                                      
Class of Stock [Line Items]                                      
Temporary equity stock issued during the period shares     475,150                                
Conversion of non redeemable common stock shares from one class into another         1,710,546                            
Class A Class C And Class C Two Common Stock [Member]                                      
Class of Stock [Line Items]                                      
Common stock par or stated value per share | € / shares                       € 1              
Income to be allocated to particular classes of stockholders                 $ 228 € 167                  
Redeemable Class C Common Stock [Member]                                      
Class of Stock [Line Items]                                      
Common stock shares voting rights                     one vote                
Redeemable Class C Common Stock [Member] | SHHL [Member]                                      
Class of Stock [Line Items]                                      
Temporary Equity, Par value | € / shares           € 1                       € 1 € 1
Temporary equity shares issued                         21,187,494 16,435,997     6,933,004 6,933,004 6,933,004
Temporary equity stock issued during the period shares   2,181,507 4,276,347     9,502,993                          
Class C Two Common Stock [Member]                                      
Class of Stock [Line Items]                                      
Common stock par or stated value per share | € / shares                               € 1      
Incurred share issuance costs | $             $ 1                        
Common stock shares outstanding                               3,326,048      
Class D Common Stock [Member]                                      
Class of Stock [Line Items]                                      
Common stock par or stated value per share | € / shares                             € 0.0001        
Common stock shares outstanding                           2,850,897          
Common stock shares issued                           2,850,897          
Class A Class B Class C And Class C Two Common Stock [Member]                                      
Class of Stock [Line Items]                                      
Income to be allocated to particular classes of stockholders | $                 $ 1,800                    
Common Class B [Member]                                      
Class of Stock [Line Items]                                      
Common stock par or stated value per share | $ / shares                 $ 0.01   $ 0.01                
Common stock shares outstanding                 141,500,385   141,500,385 141,500,385              
Common stock shares issued                 141,500,385   141,500,385 141,500,385              
Conversion of non redeemable common stock shares from one class into another                 141,500,385 141,500,385                  
Common Class B [Member] | SHHL [Member]                                      
Class of Stock [Line Items]                                      
Common stock par or stated value per share | € / shares               € 0.0001                      
Number of voting right               0                      
Stock shares issued during the period shares               4,469,417                      
Common Class C [Member] | SHHL [Member]                                      
Class of Stock [Line Items]                                      
Common stock shares outstanding                           1,710,546          
Conversion of non redeemable common stock shares from one class into another         1,710,546                            
Common Class A Redeemable C Ordinary Shares [Member]                                      
Class of Stock [Line Items]                                      
Common stock shares voting rights                 one vote one vote                  
Non Exceutive Director [Member] | Redeemable Class C Common Stock [Member]                                      
Class of Stock [Line Items]                                      
Number of directors who can be appointed                     1                
Non Voting Observer Director [Member] | Redeemable Class C Common Stock [Member]                                      
Class of Stock [Line Items]                                      
Number of directors who can be appointed                     1