v3.25.2
Earnings Per Share (Schedule of Basic and Diluted EPS) (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
3 Months Ended 12 Months Ended
May 25, 2025
Feb. 23, 2025
Nov. 24, 2024
Aug. 25, 2024
May 26, 2024
Feb. 25, 2024
Nov. 26, 2023
Aug. 27, 2023
May 25, 2025
May 26, 2024
May 28, 2023
Earnings Per Share [Abstract]                      
Net earnings attributable to General Mills as reported $ 294.0 $ 625.6 $ 795.7 $ 579.9 $ 557.5 $ 670.1 $ 595.5 $ 673.5 $ 2,295.2 $ 2,496.6 $ 2,593.9
Net earnings for earnings per share calculation                 $ 2,284.7 $ 2,496.6 $ 2,593.9
Average number of common shares - basic EPS                 554.5 575.5 594.8
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                      
Capital appreciation paid on Class A Interests in GMC $ (252.8)                    
Earnings Per Share, Basic and Diluted [Abstract]                      
Average number of common shares - diluted EPS                 557.5 579.5 601.2
Earnings per share - basic $ 0.53 $ 1.14 $ 1.43 $ 1.03 $ 0.98 $ 1.18 $ 1.03 $ 1.15 $ 4.12 $ 4.34 $ 4.36
Earnings per share - diluted $ 0.53 $ 1.12 $ 1.42 $ 1.03 $ 0.98 $ 1.17 $ 1.02 $ 1.14 $ 4.10 $ 4.31 $ 4.31
Other Disclosures [Abstract]                      
Anti-dilutive stock options, restricted stock units, and performance share units                 4.7 2.1 0.8
Capital Account Appreciation [Member]                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                      
Capital appreciation paid on Class A Interests in GMC $ (10.5)               $ (10.5) $ 0.0 $ 0.0
Stock options [Member]                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                      
Incremental share effect                 1.2 1.8 3.6
Restricted stock units and performance share units [Member]                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                      
Incremental share effect                 1.8 2.2 2.8