LEGAL PROCEEDINGS AND CONTINGENCIES LEGAL PROCEEDINGS AND CONTINGENCIES (Loss Contingencies) (Details) (USD $) In Millions, unless otherwise specified	1 Months Ended	24 Months Ended
Mar. 29, 2013	Aug. 31, 2010 Freight_Forwarding_Companies	Dec. 31, 2007 Cases
Loss Contingencies [Line Items]
Number of Freight Forwarding Companies		45ups_NumberOfFreightForwardingCompanies
Loss Contingency, New Claims Filed, Number			4
Loss Contingency Accrual, Carrying Value, Provision	$ 40us-gaap_LossContingencyAccrualProvision

Amount charged against operating income increasing loss contingency liability, after adjustments to reduce previously estimated charges.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 450

-SubTopic 20

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14326-108349

Name:	us-gaap_LossContingencyAccrualProvision
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration