Annual report pursuant to Section 13 and 15(d)

Document and Entity Information

Document and Entity Information - USD ($)
12 Months Ended
Dec. 31, 2018
Feb. 06, 2019
Jun. 30, 2018
Document Type 10-K    
Amendment Flag false    
Document Period End Date Dec. 31, 2018    
Document Fiscal Year Focus 2018    
Document Fiscal Period Focus FY    
Trading Symbol UPS    
Entity Registrant Name UNITED PARCEL SERVICE INC    
Entity Central Index Key 0001090727    
Current Fiscal Year End Date --12-31    
Entity Well-known Seasoned Issuer Yes    
Entity Emerging Growth Company false    
Entity Small Business false    
Entity Shell Company false    
Entity Current Reporting Status Yes    
Entity Voluntary Filers No    
Entity Filer Category Large Accelerated Filer    
Entity Public Float     $ 73,643,493,685
Class A Common Stock:      
Entity Common Stock, Shares Outstanding   164,239,863  
Class B Common Stock:      
Entity Common Stock, Shares Outstanding   695,989,113