United Parcel Service, Inc. Quarterly report pursuant to Section 13 or 15(d)

Segment Information (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
Segment Information (Detail) - USD ($) $ in Millions	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Segment Reporting Information [Line Items]
Revenue	$ 17,444	$ 16,173	$ 52,013	$ 47,610
Operating Profit	1,727	1,812	5,020	5,466
U.S. Domestic Package
Segment Reporting Information [Line Items]
Operating Profit	949	1,011	2,644	3,216
International Package
Segment Reporting Information [Line Items]
Operating Profit	536	606	1,748	1,694
Supply Chain & Freight
Segment Reporting Information [Line Items]
Operating Profit	242	195	628	556
U.S \| U.S. Domestic Package
Segment Reporting Information [Line Items]
Revenue	10,437	9,651	31,018	28,928
International
Segment Reporting Information [Line Items]
Revenue	3,478	3,376	10,613	9,621
Supply Chain & Freight \| Supply Chain & Freight
Segment Reporting Information [Line Items]
Revenue	$ 3,529	$ 3,146	$ 10,382	$ 9,061