Contingencies	6 Months Ended
Jun. 30, 2020
Commitments and Contingencies Disclosure [Abstract]
Contingencies	Contingencies Litigation The Company is subject to certain legal proceedings, claims, investigations and administrative proceedings in the ordinary course of its business. The Company records a provision for a liability when it is probable that the liability has been incurred and the amount of the liability can be reasonably estimated. These provisions, if any, are reviewed at least quarterly and adjusted to reflect the impacts of negotiations, settlements, rulings, advice of legal counsel and other information and events pertaining to a particular case. In the opinion of management, the outcome of pending litigation is not expected to have a material effect on the Company’s results of operations, financial condition or liquidity. On October 2, 2019, the United States Judicial Panel on Multidistrict Litigation transferred and consolidated all then-pending personal injury cases against Juul Labs, Inc. (“JLI”) involving the distribution and sale of JUUL products to the Northern District of California (the “JUUL MDL”). Subsequently, on March 11, 2020, the plaintiffs in the JUUL MDL filed a Personal Injury Consolidated Master Complaint against JLI, Philip Morris and various Altria Group entities, JLI co-founders, early JLI investors and board members, certain e-liquid manufacturers, and numerous distributors and retailers of JUUL products, including Core Mark. Consequently, Core-Mark has been added as a defendant in a number of these personal injury suits. The JLI MDL litigation is currently in an early stage, and the personal injury plaintiffs have not made a monetary demand to the defendants. Core-Mark believes that it is entitled to contractual, statutory and/or common law indemnification from JLI for any liability that could result from the JUUL MDL. Core-Mark and JLI are in discussions regarding these indemnification rights.

Contingencies

6 Months Ended

Jun. 30, 2020

Commitments and Contingencies Disclosure [Abstract]

Litigation

The Company is subject to certain legal proceedings, claims, investigations and administrative proceedings in the ordinary course of its business. The Company records a provision for a liability when it is probable that the liability has been incurred and the amount of the liability can be reasonably estimated. These provisions, if any, are reviewed at least quarterly and adjusted to reflect the impacts of negotiations, settlements, rulings, advice of legal counsel and other information and events pertaining to a particular case. In the opinion of management, the outcome of pending litigation is not expected to have a material effect on the Company’s results of operations, financial condition or liquidity.

On October 2, 2019, the United States Judicial Panel on Multidistrict Litigation transferred and consolidated all then-pending personal injury cases against Juul Labs, Inc. (“JLI”) involving the distribution and sale of JUUL products to the Northern District of California (the “JUUL MDL”). Subsequently, on March 11, 2020, the plaintiffs in the JUUL MDL filed a Personal Injury Consolidated Master Complaint against JLI, Philip Morris and various Altria Group entities, JLI co-founders, early JLI investors and board members, certain e-liquid manufacturers, and numerous distributors and retailers of JUUL products, including Core Mark. Consequently, Core-Mark has been added as a defendant in a number of these personal injury suits. The JLI MDL litigation is currently in an early stage, and the personal injury plaintiffs have not made a monetary demand to the defendants. Core-Mark believes that it is entitled to contractual, statutory and/or common law indemnification from JLI for any liability that could result from the JUUL MDL. Core-Mark and JLI are in discussions regarding these indemnification rights.