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10. Commitments and Contingencies (Tables)
9 Months Ended
Sep. 30, 2024
Commitments and Contingencies Disclosure [Abstract]  
Schedule of Commercial Commitments As of September 30, 2024, the issued and outstanding amounts and available capacities under these commitments were as follows (in millions):
Issued and OutstandingAvailable Capacity
Revolving Credit Facility (1)$— $250.0 
Bilateral facilities (2)185.4 119.4 
Surety bonds28.6 225.0 
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(1)Our Revolving Credit Facility provides us with a sub-limit of $250.0 million to issue letters of credit, at a fee based on the applicable margin for Term SOFR loans, a fronting fee, and other customary letter of credit fees.

(2)Of the total letters of credit issued under the bilateral facilities, $9.3 million was secured with cash.
Schedule of Product Warranty Liability
Product warranty activities during the three and nine months ended September 30, 2024 and 2023 were as follows (in thousands):
Three Months Ended
September 30,
Nine Months Ended
September 30,
 2024202320242023
Product warranty liability, beginning of period$23,695 $31,969 $25,491 $33,787 
Accruals for new warranties issued1,413 1,310 4,463 3,155 
Settlements(4,578)(1,326)(9,922)(4,519)
Changes in estimate of product warranty liability50,155 (5,806)50,653 (6,276)
Product warranty liability, end of period$70,685 $26,147 $70,685 $26,147 
Current portion of warranty liability$54,245 $7,647 $54,245 $7,647 
Noncurrent portion of warranty liability$16,440 $18,500 $16,440 $18,500