
	At June 30, 2025		At December 31, 2024
(in millions of U.S. dollar)	Current	Non-current	Current	Non-current
Close down and environmental remediation costs	17	82	13	79
Restructuring costs	1	—	3	1
Legal claims and other costs	10	12	9	11
Total provisions	28	94	25	91

Environmental remediation costs are accounted for based on the Group's best estimate of the costs of its environmental clean-up obligations. The Group also records provisions for close down and restoration efforts based on the net present value of estimated future costs of the dismantling and demolition of infrastructure and the removal of residual material of disturbed areas. These provisions are expected to be settled over the next 40 years depending on the nature of the disturbance and the technical remediation plans.

The Group is involved, and may become involved, in various lawsuits, claims and proceedings relating to customer claims, product liability, employee and retiree benefit matters and other commercial matters. The Group records provisions for pending litigation matters when it determines that it is probable that an outflow of resources will be required to settle the obligation, and such amounts can be reasonably estimated. In some proceedings, the issues raised can be highly complex and subject to significant uncertainties and amounts claimed can be substantial. As a result, the probability of loss and an estimation of damages can be difficult to ascertain. In exceptional cases, when the Group considers that disclosures relating to provisions and contingencies may prejudice its position, disclosures are limited to the general nature of the matter in hand.