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Cover Page - shares
9 Months Ended
Sep. 30, 2022
Nov. 04, 2022
Cover [Abstract]    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Sep. 30, 2022  
Document Transition Report false  
Entity File Number 1-12504  
Entity Registrant Name MACERICH CO  
Entity Incorporation, State or Country Code MD  
Entity Tax Identification Number 95-4448705  
Entity Address, Address Line One 401 Wilshire Boulevard,  
Entity Address, Address Line Two Suite 700,  
Entity Address, City or Town Santa Monica,  
Entity Address, State or Province CA  
Entity Address, Postal Zip Code 90401  
City Area Code (310)  
Local Phone Number 394-6000  
Title of each class Common Stock, $0.01 Par Value  
Trading symbol MAC  
Name of each exchange on which registered 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   214,784,758
Entity Central Index Key 0000912242  
Amendment Flag false  
Current Fiscal Year End Date --12-31  
Document Fiscal Year Focus 2022  
Document Fiscal Period Focus Q3