Business Segments and Geographic Areas - Plant, Property and Equipment by Country Based on the Location (Detail) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Segment Reporting Information [Line Items]
Property, plant and equipment, net	$ 1,927	$ 2,354
United States [Member]
Segment Reporting Information [Line Items]
Property, plant and equipment, net	1,011	1,257
Saudi Arabia [Member]
Segment Reporting Information [Line Items]
Property, plant and equipment, net	176	87
Brazil [Member]
Segment Reporting Information [Line Items]
Property, plant and equipment, net	92	194
United Kingdom [Member]
Segment Reporting Information [Line Items]
Property, plant and equipment, net	86	112
Denmark [Member]
Segment Reporting Information [Line Items]
Property, plant and equipment, net	76	111
South Korea [Member]
Segment Reporting Information [Line Items]
Property, plant and equipment, net	51	77
Russia [Member]
Segment Reporting Information [Line Items]
Property, plant and equipment, net	13	16
Canada [Member]
Segment Reporting Information [Line Items]
Property, plant and equipment, net	73	77
Mexico [Member]
Segment Reporting Information [Line Items]
Property, plant and equipment, net	30	43
United Arab Emirates [Member]
Segment Reporting Information [Line Items]
Property, plant and equipment, net	68	52
Singapore [Member]
Segment Reporting Information [Line Items]
Property, plant and equipment, net	15	28
Other Countries [Member]
Segment Reporting Information [Line Items]
Property, plant and equipment, net	$ 236	$ 300