United Parcel Service, Inc. Annual report pursuant to Section 13 and 15(d)

Annual report pursuant to Section 13 and 15(d)

COMPANY-SPONSORED EMPLOYEE BENEFIT PLANS - Projected Benefit Obligation, Accumulated Benefit Obligation, and Fair Value of Plan Assets for Pension Plans With an Accumulated Benefit Obligation in Excess of Plan Assets (Detail)

COMPANY-SPONSORED EMPLOYEE BENEFIT PLANS - Projected Benefit Obligation, Accumulated Benefit Obligation, and Fair Value of Plan Assets for Pension Plans With an Accumulated Benefit Obligation in Excess of Plan Assets (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended	12 Months Ended
	Jun. 30, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Defined Benefit Plan Disclosure [Line Items]
Document Fiscal Year Focus		2014
Defined Benefit Plan, Benefits Paid	$ 278us-gaap_DefinedBenefitPlanBenefitsPaid
Fair value of plan assets		30,129	27,510
U.S. Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligation, Projected Benefit Obligation Exceeds the Fair Value of the Plan Assets		37,521	29,508
Accumulated benefit obligation, Projected Benefit Obligation Exceeds the Fair Value of the Plan Assets		34,725	27,623
Fair value of plan assets, Projected Benefit Obligation Exceeds the Fair Value of the Plan Assets		28,828	26,224
Projected benefit obligation, Accumulated Benefit Obligation Exceeds the Fair Value of Plan Assets		37,521	29,508
Accumulated benefit obligation, Accumulated Benefit Obligation Exceeds the Fair Value of Plan Assets		34,725	27,623
Fair value of plan assets, Accumulated Benefit Obligation Exceeds the Fair Value of Plan Assets		28,828	26,224
Defined Benefit Plan, Benefit Obligation		37,521	29,508
Service cost		1,137	1,349	998
Interest cost		1,604	1,449	1,410
Fair value of plan assets		28,828	26,224
U.S. Postretirement Medical Benefits
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Benefit Obligation		2,883	4,046
Service cost		62	103	89
Interest cost		152	185	208
Fair value of plan assets		259	355
International Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligation, Projected Benefit Obligation Exceeds the Fair Value of the Plan Assets		510	764
Accumulated benefit obligation, Projected Benefit Obligation Exceeds the Fair Value of the Plan Assets		426	658
Fair value of plan assets, Projected Benefit Obligation Exceeds the Fair Value of the Plan Assets		261	580
Projected benefit obligation, Accumulated Benefit Obligation Exceeds the Fair Value of Plan Assets		474	361
Accumulated benefit obligation, Accumulated Benefit Obligation Exceeds the Fair Value of Plan Assets		398	301
Fair value of plan assets, Accumulated Benefit Obligation Exceeds the Fair Value of Plan Assets		232	184
Defined Benefit Plan, Benefit Obligation		1,274	1,076
Service cost		43	47	41
Interest cost		49	44	41
Fair value of plan assets		1,042	931
Benefit Obligations [Member] \| U.S. Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Benefit Obligation		37,521	29,508	31,868
Service cost		1,137	1,349
Interest cost		1,604	1,449
Defined Benefit Plan, Benefits Paid		924	813
Defined Benefit Plan, Contributions by Plan Participants		0	0
Defined Benefit Plan, Plan Amendments		5	140
Defined Benefit Plan, Actuarial Gain (Loss)		(6,191)	4,485
Defined Benefit Plan, Foreign Currency Exchange Rate Gain (Loss)		0	0
Defined Benefit Plan, Purchases, Sales, and Settlements		0	0
Defined Benefit Plan Other Benefit Obligations		0	0
Benefit Obligations [Member] \| U.S. Postretirement Medical Benefits
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Benefit Obligation		2,883	4,046	4,412
Service cost		62	103
Interest cost		152	185
Defined Benefit Plan, Benefits Paid		255	258
Defined Benefit Plan, Contributions by Plan Participants		15	17
Defined Benefit Plan, Plan Amendments		65	4
Defined Benefit Plan, Actuarial Gain (Loss)		(1,069)	417
Defined Benefit Plan, Foreign Currency Exchange Rate Gain (Loss)		0	0
Defined Benefit Plan, Purchases, Sales, and Settlements		2,271	0
Defined Benefit Plan Other Benefit Obligations		0	0
Benefit Obligations [Member] \| International Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Benefit Obligation		1,274	1,076	1,089
Service cost		43	47
Interest cost		49	44
Defined Benefit Plan, Benefits Paid		26	21
Defined Benefit Plan, Contributions by Plan Participants		5	4
Defined Benefit Plan, Plan Amendments		0	0
Defined Benefit Plan, Actuarial Gain (Loss)		(194)	55
Defined Benefit Plan, Foreign Currency Exchange Rate Gain (Loss)		(103)	(26)
Defined Benefit Plan, Purchases, Sales, and Settlements		2	6
Defined Benefit Plan Other Benefit Obligations		38	0
Fair Value of Plan Assets [Member] \| U.S. Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Benefits Paid		924	813
Defined Benefit Plan, Contributions by Plan Participants		0	0
Fair value of plan assets		28,828	26,224	24,941
Defined Benefit Plan, Actual Return on Plan Assets		2,471	2,082
Defined Benefit Plan, Contributions by Employer		1,057	14
Defined Benefit Plan, Foreign Currency Exchange Rate Changes, Plan Assets		0	0
Defined Benefit Plan, Settlements, Plan Assets		0	0
Defined Benefit Plan Other Fair Value Of Plan Assets		0	0
Fair Value of Plan Assets [Member] \| U.S. Postretirement Medical Benefits
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Benefits Paid		255	258
Defined Benefit Plan, Contributions by Plan Participants		15	17
Fair value of plan assets		259	355	460
Defined Benefit Plan, Actual Return on Plan Assets		22	28
Defined Benefit Plan, Contributions by Employer		122	108
Defined Benefit Plan, Foreign Currency Exchange Rate Changes, Plan Assets		0	0
Defined Benefit Plan, Settlements, Plan Assets		0	0
Defined Benefit Plan Other Fair Value Of Plan Assets		0	0
Fair Value of Plan Assets [Member] \| International Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Benefits Paid		26	21
Defined Benefit Plan, Contributions by Plan Participants		3	1
Fair value of plan assets		1,042	931	801
Defined Benefit Plan, Actual Return on Plan Assets		106	81
Defined Benefit Plan, Contributions by Employer		79	90
Defined Benefit Plan, Foreign Currency Exchange Rate Changes, Plan Assets		(79)	(20)
Defined Benefit Plan, Settlements, Plan Assets		2	1
Defined Benefit Plan Other Fair Value Of Plan Assets		$ 30	$ 0