v3.26.1
Income Per Share and Stockholders’ Equity - Schedule of Calculations of Basic and Diluted Income Per Share (Details) - USD ($)
$ / shares in Units, $ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Basic Income Per Share        
Net income attributable to CBRE Group, Inc. stockholders $ 204 $ 215 $ 522 $ 378
Weighted average shares outstanding for basic income per share (in shares) 291,824,424 297,950,927 293,089,123 299,113,472
Basic income per share attributable to CBRE Group, Inc. stockholders (in dollars per share) $ 0.70 $ 0.72 $ 1.78 $ 1.26
Diluted Income Per Share        
Net income attributable to CBRE Group, Inc. stockholders $ 204 $ 215 $ 522 $ 378
Weighted average shares outstanding for basic income per share (in shares) 291,824,424 297,950,927 293,089,123 299,113,472
Dilutive effect of contingently issuable shares (in shares) 2,035,185 2,057,495 2,322,548 2,341,781
Weighted average shares outstanding for diluted income per share (in shares) 293,859,609 300,008,422 295,411,671 301,455,253
Diluted income per share attributable to CBRE Group, Inc. stockholders (in dollars per share) $ 0.69 $ 0.72 $ 1.77 $ 1.25