A ruling from the International Chamber of Commerce has cleared Chevron's $53 billion acquisition of Hess, ending one of the biggest battles between two majors in decades.

Chevron has scored a critical ruling in Paris that has given it the go-ahead for a $53 billion acquisition of Hess and access to one of the biggest oil finds of the decade. Chevron said Friday that it completed its acquisition of Hess shortly after the ruling from the International Chamber of Commerce in Paris.

Key Takeaways Chevron completed its $53 billion purchase of Hess after winning an arbitration case brought by rival Exxon Mobil and the China National Offshore Oil Corporation.The International Chamber of Commerce dismissed the challenge related to Chevron acquiring Hess's production sites in Guyana.