v3.25.2
Cover
 6 Months Ended
Jun. 30, 2025
shares
Cover [Abstract]  
Document Type 10-Q
Document Quarterly Report true
Document Period End Date Jun. 30, 2025
Document Transition Report false
Securities Act File Number 001-35492
Entity Registrant Information ALEXANDER & BALDWIN, INC.
Entity Incorporation, State or Country Code HI
Entity Tax Identification Number 45-4849780
Entity Address, Address Line One 822 Bishop Street
Entity Address, Address Line Two P. O. Box 3440,
Entity Address, City or Town Honolulu,
Entity Address, State or Province HI
Entity Address, Postal Zip Code 96801
City Area Code 808
Local Phone Number 525-6611
Title of 12(b) Security Common Stock, without par value
Trading Symbol ALEX
Security Exchange Name NYSE
Entity Current Reporting Status Yes
Entity Interactive Data Current Yes
Entity Filer Category Large Accelerated Filer
Entity Small Business false
Entity Emerging Growth Company false
Entity Shell Company false
Entity Common Stock, Shares Outstanding 72,753,270
Entity Central Index Key 0001545654
Current Fiscal Year End Date --12-31
Document Fiscal Year Focus 2025
Document Fiscal Period Focus Q2
Amendment Flag false