Annual report pursuant to Section 13 and 15(d)

Noncontrolling Interests (Details)

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Noncontrolling Interests (Details) - USD ($)
$ / shares in Units, $ in Millions
 12 Months Ended
Oct. 20, 2021
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Oct. 19, 2021
Jun. 30, 2021
Jun. 30, 2020
Noncontrolling Interest [Line Items]              
Share-based compensation arrangement by share-based payment award, fair value assumptions, exercise price (in dollars per share) $ 10.00            
Total stockholders’ equity $ (109.4) $ 1,550.0 $ 1,467.2 $ 1,784.0 $ (944.1) $ (839.5) $ (716.5)
Noncontrolling Interests              
Noncontrolling Interest [Line Items]              
Total stockholders’ equity $ 0.0 $ 65.5 $ 69.0 $ 90.8 $ 2.1 $ 2.1 $ 2.2
IntermediateCo Class B common stock              
Noncontrolling Interest [Line Items]              
Shares issued (in shares) 1            
Percentage of non-voting share 96.00%            
Percentage of non-voting interests not attributable portion 4.00% 3.50%          
IntermediateCo Class A common stock | GSAH              
Noncontrolling Interest [Line Items]              
Percentage of voting shares 100.00%            
Class B Common Stock | GSAH              
Noncontrolling Interest [Line Items]              
Business acquisition equity interest issued or issuable (in shares) 8,560,540            
Class B Common Stock | Intermediate Co              
Noncontrolling Interest [Line Items]              
Business acquisition equity interest issued or issuable (in shares) 8,560,540 7,787,333