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, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Segment Reporting Information [Line Items]
Revenue	$ 18,318	$ 17,444	$ 53,526	$ 52,013
Operating Profit	2,128	1,727	5,665	5,020
U.S. Domestic Package
Segment Reporting Information [Line Items]
Operating Profit	1,216	949	3,090	2,644
International Package
Segment Reporting Information [Line Items]
Operating Profit	667	536	1,858	1,748
Supply Chain & Freight
Segment Reporting Information [Line Items]
Operating Profit	245	242	717	628
U.S \| U.S. Domestic Package
Segment Reporting Information [Line Items]
Revenue	11,455	10,437	33,085	31,018
International
Segment Reporting Information [Line Items]
Revenue	3,494	3,478	10,458	10,613
Supply Chain & Freight \| Supply Chain & Freight
Segment Reporting Information [Line Items]
Revenue	$ 3,369	$ 3,529	$ 9,983	$ 10,382