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LEGAL PROCEEDINGS AND CONTINGENCIES LEGAL PROCEEDINGS AND CONTINGENCIES (Details)	1 Months Ended
	Aug. 31, 2016 Defendants
CNMC
Loss Contingencies [Line Items]
Loss Contingency, Number of Defendants	10

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_LossContingenciesLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Number of defendants named in a legal action.

+ References

No definition available.

+ Details

Name:	us-gaap_LossContingencyNumberOfDefendants
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	srt_LitigationCaseAxis=ups_NationalMarketsandCompetitionCommissionMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: