Schedule Of Commitments And Contingencies [Line Items]

Number of Product liability cases | Case

2

December 2019

County and the cities of Alcoa and Maryville, Tennessee, a public, nonprofit corporation organized and existing under the laws of the state of Tennessee, or the IDB. Pursuant to the Project Agreement, we represented to the IDB that we intend to incur, or cause to be incurred, no less than $120.0 million in aggregate capital expenditures on or before December 31, 2025, create no less than 620 new jobs, and sustain an average hourly wage of at least $25.97 at the facility. Further, pursuant to the Project Agreement, we are required to, among other things, (a) execute a facility lease and an equipment lease with the IDB; (b) cause the construction of the new facility at our sole cost and expense to commence on or before May 31, 2022; (c) incur, or cause to be incurred, aggregate capital expenditures in connection with the construction and equipping of the new facility in an aggregate amount of not less than $120.0 million on or before December 31, 2025; (d) cause the construction of the new facility to be substantially completed and for a certificate of occupancy to be issued therefore on or before December 31, 2023; (e) provide the IDB with a written report certified by one of our authorized officers, not later than January 31 of each year during the period between January 31, 2024 and January 31, 2031; and (f) make certain payments to the IDB in the event that our actual capital expenditures, number of employees, or average hourly wage of such employees are less than our projections.

Compensatory damages sought

75,000

Schedule Of Commitments And Contingencies [Line Items]

Number of plaintiffs | Plaintiff

2

Schedule Of Commitments And Contingencies [Line Items]

Aggregate damages claims

$ 100

Commitments and Contingencies - Additional Information (Detail) $ in Millions	1 Months Ended	3 Months Ended
	Jan. 31, 2018 USD ($)	Jul. 31, 2025 USD ($) Plaintiff Claim Case	Jul. 31, 2025 CAD ($) Plaintiff Claim Case
Schedule Of Commitments And Contingencies [Line Items]
Compensatory damages sought	$ 18,600,000
Number of Product liability cases \| Case		2	2
Number of Other product liability claims \| Claim		4	4
Year Of Other Product Liability Claim		December 2019	December 2019
Aggregate estimated capital expenditure		$ 120,000,000
IDB
Schedule Of Commitments And Contingencies [Line Items]
Terms of commitment		County and the cities of Alcoa and Maryville, Tennessee, a public, nonprofit corporation organized and existing under the laws of the state of Tennessee, or the IDB. Pursuant to the Project Agreement, we represented to the IDB that we intend to incur, or cause to be incurred, no less than $120.0 million in aggregate capital expenditures on or before December 31, 2025, create no less than 620 new jobs, and sustain an average hourly wage of at least $25.97 at the facility. Further, pursuant to the Project Agreement, we are required to, among other things, (a) execute a facility lease and an equipment lease with the IDB; (b) cause the construction of the new facility at our sole cost and expense to commence on or before May 31, 2022; (c) incur, or cause to be incurred, aggregate capital expenditures in connection with the construction and equipping of the new facility in an aggregate amount of not less than $120.0 million on or before December 31, 2025; (d) cause the construction of the new facility to be substantially completed and for a certificate of occupancy to be issued therefore on or before December 31, 2023; (e) provide the IDB with a written report certified by one of our authorized officers, not later than January 31 of each year during the period between January 31, 2024 and January 31, 2031; and (f) make certain payments to the IDB in the event that our actual capital expenditures, number of employees, or average hourly wage of such employees are less than our projections.	County and the cities of Alcoa and Maryville, Tennessee, a public, nonprofit corporation organized and existing under the laws of the state of Tennessee, or the IDB. Pursuant to the Project Agreement, we represented to the IDB that we intend to incur, or cause to be incurred, no less than $120.0 million in aggregate capital expenditures on or before December 31, 2025, create no less than 620 new jobs, and sustain an average hourly wage of at least $25.97 at the facility. Further, pursuant to the Project Agreement, we are required to, among other things, (a) execute a facility lease and an equipment lease with the IDB; (b) cause the construction of the new facility at our sole cost and expense to commence on or before May 31, 2022; (c) incur, or cause to be incurred, aggregate capital expenditures in connection with the construction and equipping of the new facility in an aggregate amount of not less than $120.0 million on or before December 31, 2025; (d) cause the construction of the new facility to be substantially completed and for a certificate of occupancy to be issued therefore on or before December 31, 2023; (e) provide the IDB with a written report certified by one of our authorized officers, not later than January 31 of each year during the period between January 31, 2024 and January 31, 2031; and (f) make certain payments to the IDB in the event that our actual capital expenditures, number of employees, or average hourly wage of such employees are less than our projections.
Average hourly wage		$ 25.97
Minimum
Schedule Of Commitments And Contingencies [Line Items]
Compensatory damages sought		75,000
Maximum
Schedule Of Commitments And Contingencies [Line Items]
Compensatory damages sought		$ 50,000,000
Putative Class
Schedule Of Commitments And Contingencies [Line Items]
Number of plaintiffs \| Plaintiff		2	2
Putative Class \| General Damages
Schedule Of Commitments And Contingencies [Line Items]
Aggregate damages claims			$ 50
Putative Class \| Compensatory or Punitive Damages
Schedule Of Commitments And Contingencies [Line Items]
Aggregate damages claims			$ 100