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

Annual report pursuant to Section 13 and 15(d)

CASH AND INVESTMENTS - Summary of Marketable Securities (Detail)

CASH AND INVESTMENTS - Summary of Marketable Securities (Detail) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Schedule of Available-for-sale Securities [Line Items]
Document Fiscal Year Focus	2014
Trading Securities	$ 430,000,000us-gaap_TradingSecurities	$ 0us-gaap_TradingSecurities
Marketable Securities, Amortized Cost Basis	992,000,000	582,000,000
Marketable Securities, Gross Unrealized Gain	2,000,000	2,000,000
Marketable Securities, Gross Unrealized Loss	(2,000,000)	(4,000,000)
Marketable securities	992,000,000us-gaap_MarketableSecuritiesCurrent	580,000,000us-gaap_MarketableSecuritiesCurrent
Corporate Debt Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Marketable Securities, Amortized Cost Basis	534,000,000	146,000,000
Marketable Securities, Gross Unrealized Gain	0	1,000,000
Marketable Securities, Gross Unrealized Loss	0	(1,000,000)
Marketable securities	534,000,000	146,000,000
Mortgage and asset-backed debt securities
Schedule of Available-for-sale Securities [Line Items]
Marketable Securities, Amortized Cost Basis	89,000,000	76,000,000
Marketable Securities, Gross Unrealized Gain	1,000,000	1,000,000
Marketable Securities, Gross Unrealized Loss	(1,000,000)	(2,000,000)
Marketable securities	89,000,000	75,000,000
US Treasury and Government [Member]
Schedule of Available-for-sale Securities [Line Items]
Marketable Securities, Amortized Cost Basis	321,000,000	355,000,000
Marketable Securities, Gross Unrealized Gain	1,000,000	0
Marketable Securities, Gross Unrealized Loss	(1,000,000)	(1,000,000)
Marketable securities	321,000,000	354,000,000
U.S. state and local municipal debt securities
Schedule of Available-for-sale Securities [Line Items]
Marketable Securities, Amortized Cost Basis	2,000,000	2,000,000
Marketable Securities, Gross Unrealized Gain	0	0
Marketable Securities, Gross Unrealized Loss	0	0
Marketable securities	2,000,000	2,000,000
Other debt and equity securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Marketable Securities, Amortized Cost Basis	46,000,000	3,000,000
Marketable Securities, Gross Unrealized Gain	0	0
Marketable Securities, Gross Unrealized Loss	0	0
Marketable securities	$ 46,000,000	$ 3,000,000