v3.26.1
EARNINGS (LOSSES) PER SHARE - Schedule of the Calculation of Basic and Diluted Earnings Per Share (Details) - USD ($)
$ / shares in Units, $ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Mar. 31, 2026
Jun. 30, 2025
Mar. 31, 2025
Jun. 30, 2026
Jun. 30, 2025
Numerator:            
Net income (loss) $ 109 $ 41 $ (4) $ 24 $ 150 $ 20
Net income (loss) attributable to noncontrolling interests (1)   (1)   2 3
Net income (loss) attributable to Hyatt Hotels Corporation $ 110   $ (3)   $ 148 $ 17
Denominator:            
Basic weighted-average shares outstanding (in shares) 94,302,204   95,584,242   94,391,653 95,781,125
Stock-based compensation (in shares) 2,393,045   0   2,340,355 1,957,606
Diluted weighted-average shares outstanding (in shares) 96,695,249   95,584,242   96,732,008 97,738,731
Basic Earnings (Losses) Per Class A and Class B Share:            
Net income (loss) (in dollars per share) $ 1.16   $ (0.04)   $ 1.59 $ 0.20
Net income (loss) attributable to noncontrolling interests (in dollars per share) (0.01)   (0.01)   0.02 0.03
Net income (loss) attributable to Hyatt Hotels Corporation (in dollars per share) 1.17   (0.03)   1.57 0.17
Diluted Earnings (Losses) Per Class A and Class B Share:            
Net income (loss) (in dollars per share) 1.13   (0.04)   1.55 0.20
Net income (loss) attributable to noncontrolling interests (in dollars per share) (0.01)   (0.01)   0.02 0.03
Net income (loss) attributable to Hyatt Hotels Corporation (in dollars per share) $ 1.14   $ (0.03)   $ 1.53 $ 0.17