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Goodwill and Other Intangible Assets - Net Summary of Goodwill (Detail) $ in Millions | 9 Months Ended
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Sep. 30, 2023 USD ($)
Goodwill [Line Items] |  |
Beginning Balance | $ 1,250.9 | [1]
Disposition | (4.2) | [2]
Foreign currency translation adjustments | 2.3 |
Ending Balance | 1,249.0 | [1]
U.S. Operating Segment |  |
Goodwill [Line Items] |  |
Beginning Balance | 1,182.9 | [1]
Disposition | 0.0 | [2]
Foreign currency translation adjustments | 0.0 |
Ending Balance | 1,182.9 | [1]
International Operating Segment |  |
Goodwill [Line Items] |  |
Beginning Balance | 68.0 | [1]
Disposition | (4.2) | [2]
Foreign currency translation adjustments | 2.3 |
Ending Balance | $ 66.1 | [1]
[1] | Balances are presented net of accumulated impairment losses of $214.0 for the U.S. operating segment and $43.8 for the international operating segment. See discussion of the qualitative impairment analysis performed by the Company as of September 30, 2023 at Note 12.
[2] | Relates to the sale of the Company’s Ecuador subsidiary. See Note 6

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