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Shareholders' Equity - Additional Information (Details) - USD ($) $ / shares in Units, $ in Millions |  |  | 3 Months Ended | 9 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
May 05, 2023 | May 06, 2022 | Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022 | Aug. 31, 2023 | Aug. 31, 2021 | Aug. 31, 2019
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |  |  |  |
Net earnings, net of tax, attributable to noncontrolling interests |  |  | $ 15.1 | $ 4.7 | $ 34.4 | $ 14.1 |  |  |
Dividend declared per share | $ 1.47 | $ 1.36 |  |  |  |  |  |  |
Dividend declared date | May 05, 2023 | May 06, 2022 |  |  |  |  |  |  |
Dividend payable date | Jun. 15, 2023 | Jun. 15, 2022 |  |  |  |  |  |  |
Dividend record date | Jun. 01, 2023 | Jun. 01, 2022 |  |  |  |  |  |  |
Shares authorized to be repurchased (in shares) |  |  |  |  |  |  | 5,000,000 | 4,000,000 | 6,000,000
Shares repurchased (in shares) |  |  |  |  | 1,700,000 | 2,800,000 |  |  |
Total cost of shares repurchased |  |  |  |  | $ 129.8 |  |  |  |
August 2021 Authorization |  |  |  |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |  |  |  |
Shares repurchased (in shares) |  |  |  |  |  | 1,600,000 |  |  |
Total cost of shares repurchased |  |  |  |  |  | $ 245.0 |  |  |
August 2019 Authorization |  |  |  |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |  |  |  |
Shares repurchased (in shares) |  |  |  |  |  | 1,200,000 |  |  |
Minimum | August 2021 Authorization |  |  |  |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |  |  |  |
Shares remaining authorized for repurchase (in shares) |  |  | 5,000,000 |  | 5,000,000 |  |  |  |
Maximum | August 2021 Authorization |  |  |  |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |  |  |  |
Shares remaining authorized for repurchase (in shares) |  |  | 300,000 |  | 300,000 |  |  |  |
Non-Controlling Interests |  |  |  |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |  |  |  |
Net earnings, net of tax, attributable to noncontrolling interests |  |  | $ 0.1 | $ 0.1 | $ 0.2 | $ 0.6 |  |  |

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