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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 |  |  |  |  |  |  |  |
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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 |  |  |  |  |  |  |  |

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