Quarterly report pursuant to Section 13 or 15(d)

Document and Entity Information

Document and Entity Information
3 Months Ended
Mar. 31, 2013
Apr. 24, 2013
Class A common stock
Apr. 24, 2013
Class B common stock
Document Type 10-Q    
Amendment Flag false    
Document Period End Date Mar. 31, 2013    
Document Fiscal Year Focus 2013    
Document Fiscal Period Focus Q1    
Trading Symbol UPS    
Entity Registrant Name UNITED PARCEL SERVICE INC    
Entity Central Index Key 0001090727    
Current Fiscal Year End Date --12-31    
Entity Filer Category Large Accelerated Filer    
Entity Common Stock, Shares Outstanding   219,656,583 724,684,764