Goodwill and Other Intangible Assets - Net Summary of Goodwill (Parenthetical) (Detail) $ in Millions	Sep. 30, 2023 USD ($)
U.S. Operating Segment
Goodwill [Line Items]
Accumulated impairment losses	$ 214.0
International Operating Segment
Goodwill [Line Items]
Accumulated impairment losses	$ 43.8