v3.26.1
Financial Instruments - Additional Information (Detail)
6 Months Ended 12 Months Ended
Jun. 30, 2026
USD ($)
MMBTU
Dec. 31, 2025
USD ($)
MMBTU
Derivative Instruments And Hedging Activities Disclosures [Line Items]    
Financial instruments with fair values | $ $ 0 $ 0
Natural Gas Purchase Commitments [Member] | Level 2 [Member]    
Derivative Instruments And Hedging Activities Disclosures [Line Items]    
Natural gas purchase commitments volume | MMBTU 0 0