Document and Entity Information	9 Months Ended
	Sep. 30, 2013	Oct. 28, 2013 Class A common stock	Oct. 28, 2013 Class B common stock
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2013
Document Fiscal Year Focus	2013
Document Fiscal Period Focus	Q3
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		212,580,580	715,769,524