Commitments and Contingencies	12 Months Ended
Dec. 31, 2024
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	L. COMMITMENTS AND CONTINGENCIES At December 31, 2024, PACCAR had standby letters of credit and surety bonds totaling $34.6, from third-party financial institutions, in the normal course of business, which guarantee various insurance, financing and other activities. At December 31, 2024, PACCAR’s financial services companies, in the normal course of business, had outstanding commitments to fund new loan and lease transactions amounting to $949.3. The commitments generally expire in 90 days. The Company had other commitments, primarily to purchase production inventory, equipment and commodities amounting to $207.1, $94.2, $95.1, $71.8, $66.5 and $90.6 for 2025, 2026, 2027, 2028, 2029 and beyond, respectively. The Company is involved in various stages of investigations and cleanup actions in different countries related to environmental matters. In certain of these matters, the Company has been designated as a “potentially responsible party” by domestic and foreign environmental agencies. The Company has accrued the estimated costs to investigate and complete cleanup actions where it is probable that the Company will incur such costs in the future. Expenditures related to environmental activities for the years ended December 31, 2024, 2023 and 2022 were $4.4, $3.0 and $4.6, respectively. While the timing and amount of the ultimate costs associated with future environmental cleanup cannot be determined, management expects that these matters will not have a significant effect on the Company’s consolidated financial position. On July 19, 2016, the European Commission (EC) concluded its investigation of all major European truck manufacturers and reached a settlement with DAF Trucks N.V., DAF Trucks Deutschland GmbH and PACCAR Inc (collectively “the Company”). Following the settlement, certain EC-related claims and lawsuits have been filed in various jurisdictions primarily in Europe against all major European truck manufacturers including the Company and certain subsidiaries. These claims and lawsuits include a number of collective proceedings, including class actions in the United Kingdom (U.K.) and Israel, alleging EC-related claims and seeking monetary damages. In certain jurisdictions, additional claimants may bring EC-related claims and lawsuits against the Company or its subsidiaries. The legal proceedings are moving through the court systems. Several European courts have issued judgments; some have been favorable while others have been unfavorable and are being appealed. In the U.K., one class action has been certified by the lower court and the proceeding remains in its preliminary stages. The Company believes it has meritorious defenses to all of the pending legal claims. Since early 2023, the Company has been settling with selected claimants. In the first quarter 2023, the Company recorded a non-recurring pre-tax charge of $600.0 ($446.4 after-tax) for the estimable total cost. The estimate may be adjusted as the legal process continues and settlements occur, which could have a material impact on the Company’s financial results. PACCAR is also a defendant in various other legal proceedings and, in addition, there are various other contingent liabilities arising in the normal course of business. After consultation with legal counsel, management does not anticipate that disposition of these various other proceedings and contingent liabilities will have a material effect on the consolidated financial statements.

Commitments and Contingencies

12 Months Ended

Dec. 31, 2024

Commitments and Contingencies Disclosure [Abstract]

COMMITMENTS AND CONTINGENCIES

At December 31, 2024, PACCAR had standby letters of credit and surety bonds totaling $34.6, from third-party financial institutions, in the normal course of business, which guarantee various insurance, financing and other activities. At December 31, 2024, PACCAR’s financial services companies, in the normal course of business, had outstanding commitments to fund new loan and lease transactions amounting to $949.3. The commitments generally expire in 90 days. The Company had other commitments, primarily to purchase production inventory, equipment and commodities amounting to $207.1, $94.2, $95.1, $71.8, $66.5 and $90.6 for 2025, 2026, 2027, 2028, 2029 and beyond, respectively.

The Company is involved in various stages of investigations and cleanup actions in different countries related to environmental matters. In certain of these matters, the Company has been designated as a “potentially responsible party” by domestic and foreign environmental agencies. The Company has accrued the estimated costs to investigate and complete cleanup actions where it is probable that the Company will incur such costs in the future. Expenditures related to environmental activities for the years ended December 31, 2024, 2023 and 2022 were $4.4, $3.0 and $4.6, respectively.

While the timing and amount of the ultimate costs associated with future environmental cleanup cannot be determined, management expects that these matters will not have a significant effect on the Company’s consolidated financial position.

On July 19, 2016, the European Commission (EC) concluded its investigation of all major European truck manufacturers and reached a settlement with DAF Trucks N.V., DAF Trucks Deutschland GmbH and PACCAR Inc (collectively “the Company”). Following the settlement, certain EC-related claims and lawsuits have been filed in various jurisdictions primarily in Europe against all major European truck manufacturers including the Company and certain subsidiaries. These claims and lawsuits include a number of collective proceedings, including class actions in the United Kingdom (U.K.) and Israel, alleging EC-related claims and seeking monetary damages. In certain jurisdictions, additional claimants may bring EC-related claims and lawsuits against the Company or its subsidiaries.

The legal proceedings are moving through the court systems. Several European courts have issued judgments; some have been favorable while others have been unfavorable and are being appealed. In the U.K., one class action has been certified by the lower court and the proceeding remains in its preliminary stages. The Company believes it has meritorious defenses to all of the pending legal claims. Since early 2023, the Company has been settling with selected claimants. In the first quarter 2023, the Company recorded a non-recurring pre-tax charge of $600.0 ($446.4 after-tax) for the estimable total cost. The estimate may be adjusted as the legal process continues and settlements occur, which could have a material impact on the Company’s financial results.

PACCAR is also a defendant in various other legal proceedings and, in addition, there are various other contingent liabilities arising in the normal course of business. After consultation with legal counsel, management does not anticipate that disposition of these various other proceedings and contingent liabilities will have a material effect on the consolidated financial statements.