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Debt - Debt Outstanding Matures on Calendar Year Basis (Detail)
$ in Millions
Sep. 30, 2025
USD ($)
Debt Disclosure [Abstract]  
Q4 2025 $ 0.0
2026 0.0
2027 575.0
2028 0.0
2029 400.0
2030 220.0
Thereafter 400.0
Total debt $ 1,595.0