Quarterly report pursuant to Section 13 or 15(d)

Noncontrolling Interests (Details)

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Noncontrolling Interests (Details) - USD ($)
$ / shares in Units, $ in Millions
9 Months Ended
Oct. 20, 2021
Sep. 30, 2023
Jun. 30, 2023
Mar. 31, 2023
Dec. 31, 2022
Sep. 30, 2022
Jun. 30, 2022
Mar. 31, 2022
Dec. 31, 2021
Noncontrolling Interest [Line Items]                  
Share-based compensation arrangement by share-based payment award, fair value assumptions, exercise price (in dollars per share) $ 10.00                
Noncontrolling interest   $ 1,543.3 $ 1,564.5 $ 1,588.0 $ 1,467.2 $ 1,575.0 $ 1,658.9 $ 1,757.2 $ 1,784.0
Noncontrolling Interests                  
Noncontrolling Interest [Line Items]                  
Noncontrolling interest   $ 64.6 $ 66.0 $ 66.7 $ 69.0 $ 73.6 $ 78.7 $ 88.0 $ 90.8
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 | Intermediate Co                  
Noncontrolling Interest [Line Items]                  
Business acquisition equity interest issued or issuable (in shares) 8,560,540 7,832,333