v3.26.3
Fair Value Measurements - Carrying Amounts and Fair Values of Financial Instruments (Parenthetical) (Detail) - USD ($)
$ in Millions
Sep. 30, 2026
Dec. 31, 2025
Fair Value, Inputs, Level 3 | Propane Collars    
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]    
Derivative liability $ (2.0)  
Swaptions | Fair Value, Inputs, Level 3    
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]    
Derivative liability $ (1.1)  
8.25% Senior Notes Due 2029    
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]    
Interest rate on notes 8.25% 8.25%
4.75% Senior Notes Due 2030    
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]    
Interest rate on notes 4.75% 4.75%