0001820872 2026-09-29 2026-09-29 false --12-31 0001820872 8-K 2026-09-29 Global Business Travel Group, Inc. DE 001-39576 98-0598290 666 3rd Avenue 4th Floor New York NY 10017 646 344-1290 false false false false Class A common stock, par value of $0.0001 per share GBTG NYSE false